Pub Date : 2021-01-01DOI: 10.33952/2542-0720-2021-4-28-159-182
L. Chaikovskaya, O. Ovsienko
Phosphorus is an essential plant nutrient involved in plants’ growth and development, accelerated formation of reproductive organs and other important factors for obtaining high and stable crop yields and, therefore, high-quality products. Easily absorbed phosphorus compounds obtained from soil or fertilizers are the most valuable for plants. One of the promising directions for improving the phosphorus nutrition of agricultural crops is biological phosphate mobilization that is carried out by soil microorganisms – bacteria and filamentous fungi (micromycetes). They contribute to the conversion of poorly soluble phosphorus compounds into forms accessible to higher plants. The effect of microorganisms on plants in terms of improving their mineral nutrition, in particular phosphorus, was reviewed in this article. We analysed domestic and foreign literature sources (over the last 15 years) focused on the biodiversity of soil phosphate-mobilizing microorganisms and their influence on converting insoluble phosphate to soluble forms. The features of the mechanisms of biotransformation of organic and mineral phosphates by soil microorganisms and the main criteria for screening effective isolates able to convert poorly soluble phosphorus compounds into forms available for plants were described in detail. This review also demonstrates that several microorganisms belonging to different taxonomic groups (bacteria and micromycetes) are recognized as powerful phosphate solubilizers or bioconverters of poorly soluble phosphorus compounds into water-soluble forms. We also surveyed scientific works, in which the practical application of effective strains of microorganisms that transform unavailable phosphorus compounds into available for plants was studied; and those, in which the role of microorganisms in increasing the availability of phosphorus for agricultural plants and their productivity improvement was demonstrated. A comprehensive description of microbial preparations “Agrofil”, “Biovays”, “Ekophosphorin”, “Ekovital”, “Biophosphorin”, “Albobacterin”, “Polymiksobacterin”, “Agrobacterin”, “Phosphostim”, “Fitostimophos”, “Agromik”, “Baktopin” based on phosphate-mobilizing microorganisms, developed and used in various countries to optimize mineral nutrition of cultivated plants, is given.
{"title":"PHOSPHATE-MOBILIZING MICROORGANISMS: 1. BIODIVERSITY, INFLUENCE ON PLANTS MINERAL NUTRITION AND PRODUCTIVITY","authors":"L. Chaikovskaya, O. Ovsienko","doi":"10.33952/2542-0720-2021-4-28-159-182","DOIUrl":"https://doi.org/10.33952/2542-0720-2021-4-28-159-182","url":null,"abstract":"Phosphorus is an essential plant nutrient involved in plants’ growth and development, accelerated formation of reproductive organs and other important factors for obtaining high and stable crop yields and, therefore, high-quality products. Easily absorbed phosphorus compounds obtained from soil or fertilizers are the most valuable for plants. One of the promising directions for improving the phosphorus nutrition of agricultural crops is biological phosphate mobilization that is carried out by soil microorganisms – bacteria and filamentous fungi (micromycetes). They contribute to the conversion of poorly soluble phosphorus compounds into forms accessible to higher plants. The effect of microorganisms on plants in terms of improving their mineral nutrition, in particular phosphorus, was reviewed in this article. We analysed domestic and foreign literature sources (over the last 15 years) focused on the biodiversity of soil phosphate-mobilizing microorganisms and their influence on converting insoluble phosphate to soluble forms. The features of the mechanisms of biotransformation of organic and mineral phosphates by soil microorganisms and the main criteria for screening effective isolates able to convert poorly soluble phosphorus compounds into forms available for plants were described in detail. This review also demonstrates that several microorganisms belonging to different taxonomic groups (bacteria and micromycetes) are recognized as powerful phosphate solubilizers or bioconverters of poorly soluble phosphorus compounds into water-soluble forms. We also surveyed scientific works, in which the practical application of effective strains of microorganisms that transform unavailable phosphorus compounds into available for plants was studied; and those, in which the role of microorganisms in increasing the availability of phosphorus for agricultural plants and their productivity improvement was demonstrated. A comprehensive description of microbial preparations “Agrofil”, “Biovays”, “Ekophosphorin”, “Ekovital”, “Biophosphorin”, “Albobacterin”, “Polymiksobacterin”, “Agrobacterin”, “Phosphostim”, “Fitostimophos”, “Agromik”, “Baktopin” based on phosphate-mobilizing microorganisms, developed and used in various countries to optimize mineral nutrition of cultivated plants, is given.","PeriodicalId":22344,"journal":{"name":"TAURIDA HERALD OF THE AGRARIAN SCIENCES","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2021-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"82270625","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2021-01-01DOI: 10.33952/2542-0720-2021-3-27-144-154
A. Prikhodko, A. Cherkashyna
Green manuring can increase biological activity of the soil, enrich it with organic matter, nutrients and improve its agrophysical and agrochemical properties. The aim of the research was to establish the influence of green manure crops species composition on the productivity of agrophytocenoses and the input of soil organic matter under various hydrothermal conditions. The studies were conducted in 2016–2019 on the experimental fields of the Research Institute of Agriculture of Crimea. Soil – chernozems southern low-humus. Average daily air temperature was: in 2016 – 11.8 °С; in 2017 – 12.7 °С; in 2018 – 12.5 °С; in 2019 – 12.6 °С (average long-term values – 10.8 °С). The amount of precipitation over the years was at the level of 162, 67, 129, 108 % of the norm. The experiments were laid according to B. A. Dospekhov “Methods of field research”. Position of the variants is systematic, triple replication. Fields square – 720 m2. The research subject is green manure crops agrocenoses. The object of the research is the process of forming the productivity of green manure crops. On average, over the years of research, the highest yield of green mass was formed by sweet clover and sainfoin (29.1 and 27.1 t/ha, respectively), winter triticale (24.5 t/ha) and winter rye (25.8 t/ha). T. pratense and P. tanacetifolia were low-yielding. The largest amount of accumulated soil organic matter was detected when rye, triticale, sainfoin and sweet clover were used as green manure; it was 5.88, 5.72, 5.56 and 5.52 t/ha, respectively. We established an average correlation (at 5 % significance level) between the amount of precipitation for the period “sowing – ripeness” in 2016–2017 and the yield of green mass of green manure crops (r = 0.52), as well as dry matter yield (r = 0.59). A negative correlation of average strength was also established between the average daily temperature of the period “sowing – ripeness” in 2017–2018 and yield of green mass (r = –0.66), as well as organic matter yield (r = –0.64).
{"title":"PRODUCTIVITY OF GREEN MANURE CROPS DEPENDING ON HYDROTHERMAL CONDITIONS","authors":"A. Prikhodko, A. Cherkashyna","doi":"10.33952/2542-0720-2021-3-27-144-154","DOIUrl":"https://doi.org/10.33952/2542-0720-2021-3-27-144-154","url":null,"abstract":"Green manuring can increase biological activity of the soil, enrich it with organic matter, nutrients and improve its agrophysical and agrochemical properties. The aim of the research was to establish the influence of green manure crops species composition on the productivity of agrophytocenoses and the input of soil organic matter under various hydrothermal conditions. The studies were conducted in 2016–2019 on the experimental fields of the Research Institute of Agriculture of Crimea. Soil – chernozems southern low-humus. Average daily air temperature was: in 2016 – 11.8 °С; in 2017 – 12.7 °С; in 2018 – 12.5 °С; in 2019 – 12.6 °С (average long-term values – 10.8 °С). The amount of precipitation over the years was at the level of 162, 67, 129, 108 % of the norm. The experiments were laid according to B. A. Dospekhov “Methods of field research”. Position of the variants is systematic, triple replication. Fields square – 720 m2. The research subject is green manure crops agrocenoses. The object of the research is the process of forming the productivity of green manure crops. On average, over the years of research, the highest yield of green mass was formed by sweet clover and sainfoin (29.1 and 27.1 t/ha, respectively), winter triticale (24.5 t/ha) and winter rye (25.8 t/ha). T. pratense and P. tanacetifolia were low-yielding. The largest amount of accumulated soil organic matter was detected when rye, triticale, sainfoin and sweet clover were used as green manure; it was 5.88, 5.72, 5.56 and 5.52 t/ha, respectively. We established an average correlation (at 5 % significance level) between the amount of precipitation for the period “sowing – ripeness” in 2016–2017 and the yield of green mass of green manure crops (r = 0.52), as well as dry matter yield (r = 0.59). A negative correlation of average strength was also established between the average daily temperature of the period “sowing – ripeness” in 2017–2018 and yield of green mass (r = –0.66), as well as organic matter yield (r = –0.64).","PeriodicalId":22344,"journal":{"name":"TAURIDA HERALD OF THE AGRARIAN SCIENCES","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2021-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"83840651","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2021-01-01DOI: 10.33952/2542-0720-2021-3-27-95-106
G. Krivosheev, N. Shevchenko, A. S. Ignatiev
More than half of the maize crops in the Russian Federation are located in areas with insufficient and unstable moisture. With this in mind, Z. mays breeding for drought tolerance is extremely important. The purpose of the current study is: investigate the drought tolerance of self-pollinated maize lines by various methods, identify the best samples for further breeding, establish indirect criteria for estimating drought tolerance. The study was conducted at the Agricultural Research Center “Donskoy” located in the southern part of the Rostov region, which is characterized by unstable moisture. The years of the study turned out to be dry (Selyaninov Hydrothermal Coefficient (HTC) = 0.32–0.89). The new self-pollinated lines of maize were used as initial material and studied for resistance to water stress (41 pcs. in 2011–2013, 39 pcs. in 2015–2017, 25 pcs. in 2018–2020). According to the guidelines for maize breeding, the following indicators of productivity were taken into account: number of ears per plant, weight of one ear, 1000-grain weight, number of grains per ear, etc. In 2011–2013, based on the comprehensive estimation, new middle-early drought-tolerant self-pollinated lines of maize ‘DK47111’, ‘SP203’, ‘KS211’, ‘S204’ and ‘S238’ were identified. They were characterized by the low values of residual water deficit both in the flowering (6.9 – 12.8%) and milk-wax (9.0 – 13.4%) stage, high drought tolerance index (68.6 – 85.6%), deep root system (force of uprooting the plants from the ground was 54.0–67.7 kgf), minimum gap in the flowering of male and female inflorescences (1–2 days). In 2015–2017, according to the method of residual water deficit (RWD), the following lines were identified ‘KV334’, ‘RD6’, ‘DS498/217-4’, ‘DS257/85-3’, ‘DS257/85-1’, ‘DS257/85-6’, ‘DS257/85-4’. In 2018–2020, the new self-pollinated lines of maize ‘KS317A’, ‘KV240’, ‘LSh16’, ‘S86’, ‘LSh17’ and ‘LSh2’ showed high resistance to water stress. We recommend the following selection criteria when creating new lines: absence of infertility and kernel percentage of the ears.
{"title":"DROUGHT TOLERANCE OF THE NEW SELF-POLLINATED LINES OF MAIZE AND THE METHODS OF ITS ESTIMATION","authors":"G. Krivosheev, N. Shevchenko, A. S. Ignatiev","doi":"10.33952/2542-0720-2021-3-27-95-106","DOIUrl":"https://doi.org/10.33952/2542-0720-2021-3-27-95-106","url":null,"abstract":"More than half of the maize crops in the Russian Federation are located in areas with insufficient and unstable moisture. With this in mind, Z. mays breeding for drought tolerance is extremely important. The purpose of the current study is: investigate the drought tolerance of self-pollinated maize lines by various methods, identify the best samples for further breeding, establish indirect criteria for estimating drought tolerance. The study was conducted at the Agricultural Research Center “Donskoy” located in the southern part of the Rostov region, which is characterized by unstable moisture. The years of the study turned out to be dry (Selyaninov Hydrothermal Coefficient (HTC) = 0.32–0.89). The new self-pollinated lines of maize were used as initial material and studied for resistance to water stress (41 pcs. in 2011–2013, 39 pcs. in 2015–2017, 25 pcs. in 2018–2020). According to the guidelines for maize breeding, the following indicators of productivity were taken into account: number of ears per plant, weight of one ear, 1000-grain weight, number of grains per ear, etc. In 2011–2013, based on the comprehensive estimation, new middle-early drought-tolerant self-pollinated lines of maize ‘DK47111’, ‘SP203’, ‘KS211’, ‘S204’ and ‘S238’ were identified. They were characterized by the low values of residual water deficit both in the flowering (6.9 – 12.8%) and milk-wax (9.0 – 13.4%) stage, high drought tolerance index (68.6 – 85.6%), deep root system (force of uprooting the plants from the ground was 54.0–67.7 kgf), minimum gap in the flowering of male and female inflorescences (1–2 days). In 2015–2017, according to the method of residual water deficit (RWD), the following lines were identified ‘KV334’, ‘RD6’, ‘DS498/217-4’, ‘DS257/85-3’, ‘DS257/85-1’, ‘DS257/85-6’, ‘DS257/85-4’. In 2018–2020, the new self-pollinated lines of maize ‘KS317A’, ‘KV240’, ‘LSh16’, ‘S86’, ‘LSh17’ and ‘LSh2’ showed high resistance to water stress. We recommend the following selection criteria when creating new lines: absence of infertility and kernel percentage of the ears.","PeriodicalId":22344,"journal":{"name":"TAURIDA HERALD OF THE AGRARIAN SCIENCES","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2021-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"88551340","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2021-01-01DOI: 10.33952/2542-0720-2021-3-27-180-190
T. Fomina
The possibility of seed reproduction is one of the factors of successful cultivation of resource plants in specific environmental conditions. The aim of the work was to study the germination behavior, quality and longevity of seeds in 15 onions (Allium L.) from the collection of the Central Siberian Botanical Garden SB RAS, Novosibirsk. The research was carried out in 1996–2019. Laboratory germination of seeds was determined according to generally accepted methods. Seeds were tested 3–7 months after harvesting at 17–23 °C in the light. The number of seeds in each Petri dish – 25–50; double replication. In the case of hindered germination, a two-month chilling at 4 °C was applied. In the future, laboratory germination was determined after 3, 5 and 7 years of room storage. We have established that onion seeds have three types of germinating. Seeds of type I – eight species, one variety from the subgenus Rhizirideum – usually lack dormancy. Germination is fast and simultaneous, and average germination percentages are 77.1–92.2 %. Seeds of type II – A. leucocephalum and A. microdictyon from the subgenus Rhizirideum, also A. caeruleum and A. flavum from the subgenus Allium – are characterized by stretched germination period due to the shallow dormancy, and their germination percentages vary from 32.6 % to 81.1 %. Seeds of type III – A. obliquum from the subgenus Rhizirideum and two species of the subgenus Melanocrommyum – do not germinate in room conditions, or germinate with low germination percentages, whereas chilling increases them up to 47.0–67.0 %. The hindered germination of these seeds is due to the deep organic dormancy. The economic longevity of onion seeds is 3–5 years, and the biological longevity varies at interspecific level within 5–8 years. Thus, the species that produce plump and good germinating seeds suitable for long-term storage – A. altaicum, A. bidentatum, A. flavum, A. microdictyon, A. nutans, A. ramosum, A. rubens, A. schoenoprasum, A. senescens, A. senescens var. glaucum, and A. strictum – have the highest reproductive potential in culture.
{"title":"BIOLOGY OF SEED GERMINATION IN SOME ONION SPECIES (ALLIUM L.)","authors":"T. Fomina","doi":"10.33952/2542-0720-2021-3-27-180-190","DOIUrl":"https://doi.org/10.33952/2542-0720-2021-3-27-180-190","url":null,"abstract":"The possibility of seed reproduction is one of the factors of successful cultivation of resource plants in specific environmental conditions. The aim of the work was to study the germination behavior, quality and longevity of seeds in 15 onions (Allium L.) from the collection of the Central Siberian Botanical Garden SB RAS, Novosibirsk. The research was carried out in 1996–2019. Laboratory germination of seeds was determined according to generally accepted methods. Seeds were tested 3–7 months after harvesting at 17–23 °C in the light. The number of seeds in each Petri dish – 25–50; double replication. In the case of hindered germination, a two-month chilling at 4 °C was applied. In the future, laboratory germination was determined after 3, 5 and 7 years of room storage. We have established that onion seeds have three types of germinating. Seeds of type I – eight species, one variety from the subgenus Rhizirideum – usually lack dormancy. Germination is fast and simultaneous, and average germination percentages are 77.1–92.2 %. Seeds of type II – A. leucocephalum and A. microdictyon from the subgenus Rhizirideum, also A. caeruleum and A. flavum from the subgenus Allium – are characterized by stretched germination period due to the shallow dormancy, and their germination percentages vary from 32.6 % to 81.1 %. Seeds of type III – A. obliquum from the subgenus Rhizirideum and two species of the subgenus Melanocrommyum – do not germinate in room conditions, or germinate with low germination percentages, whereas chilling increases them up to 47.0–67.0 %. The hindered germination of these seeds is due to the deep organic dormancy. The economic longevity of onion seeds is 3–5 years, and the biological longevity varies at interspecific level within 5–8 years. Thus, the species that produce plump and good germinating seeds suitable for long-term storage – A. altaicum, A. bidentatum, A. flavum, A. microdictyon, A. nutans, A. ramosum, A. rubens, A. schoenoprasum, A. senescens, A. senescens var. glaucum, and A. strictum – have the highest reproductive potential in culture.","PeriodicalId":22344,"journal":{"name":"TAURIDA HERALD OF THE AGRARIAN SCIENCES","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2021-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"75027245","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2021-01-01DOI: 10.33952/2542-0720-2021-4-28-82-91
N. A. Eliseeva, Y. Kostanchuk
One of the valuable traits of any variety is its degree of adaptability to stressful environmental factors. The purpose of the research is to determine the degree of influence of average daily temperatures on the duration of interphase periods of some melon varieties in the first half of growing season to assess their ecological plasticity under conditions of the foothill zone of the Crimea. The studies were conducted in 2016–2019 on the experimental fields of FSBSI “Research Institute of Agriculture of Crimea” (village of Ukromnoye, Simferopol suburbs). All the research studies were carried out according to the existing guidelines for melon crops breeding. Fifty-six melon samples varying in reaching maturity were the objects of the study. Soil – chernozem southern calcareous heavy loamy; its texture is clayey, structure – lumpy. Weather conditions during the years of research varied. The most favourable temperature regime for the melon growing was in 2019 (2269.6 °С); unfavourable – in 2016 (1738.0 °С); 2017 and 2018 occupied an intermediate position. It allowed obtaining objective results in assessing ecological plasticity of the studied varieties. Planting scheme – standard; feeding area – 1.0×1.5 m2 per one plant. The study was carried out in a collection nursery; four-fold replication. We compared melons of three groups of ripeness: early (I) – varieties mature in 55–75 days, mid-early (II) – ripen in 76–90 days, mid-late (III) – require 90 days until harvest. During the years of research, the duration of interphase periods varied from 18 to 59 days. An increase in the relative average daily air temperature by 1 °C reduced the phenophases duration on average by 1.02–4.43 days. The most pronounced changes were revealed in the third interphase period (seedlings – fruit formation beginning): the average value of the ecological variation corresponded to 27.5 %; maximum it was in the mid-late samples (25.3 %). We established a close negative correlation (from –0.72 to –0.99) between an increase in the relative average daily air temperature and duration of the phenophases of the first half of the melon plants growing season. Each genotype reacted individually to changes in external influences. The group of mid-late samples had the highest degree of variability. An increase in the relative average daily temperatures by 1 °C reduces the length of the interphase periods of plants of this group from 1.99 to 3.75 days. Among others, varieties ‘Idyllia’, ‘Gulnara’, ‘Ethiopka’ were the most stable.
{"title":"EFFECT OF TEMPERATURE FACTOR ON THE DURATION OF INTERPHASE PERIODS OF MELON PLANTS","authors":"N. A. Eliseeva, Y. Kostanchuk","doi":"10.33952/2542-0720-2021-4-28-82-91","DOIUrl":"https://doi.org/10.33952/2542-0720-2021-4-28-82-91","url":null,"abstract":"One of the valuable traits of any variety is its degree of adaptability to stressful environmental factors. The purpose of the research is to determine the degree of influence of average daily temperatures on the duration of interphase periods of some melon varieties in the first half of growing season to assess their ecological plasticity under conditions of the foothill zone of the Crimea. The studies were conducted in 2016–2019 on the experimental fields of FSBSI “Research Institute of Agriculture of Crimea” (village of Ukromnoye, Simferopol suburbs). All the research studies were carried out according to the existing guidelines for melon crops breeding. Fifty-six melon samples varying in reaching maturity were the objects of the study. Soil – chernozem southern calcareous heavy loamy; its texture is clayey, structure – lumpy. Weather conditions during the years of research varied. The most favourable temperature regime for the melon growing was in 2019 (2269.6 °С); unfavourable – in 2016 (1738.0 °С); 2017 and 2018 occupied an intermediate position. It allowed obtaining objective results in assessing ecological plasticity of the studied varieties. Planting scheme – standard; feeding area – 1.0×1.5 m2 per one plant. The study was carried out in a collection nursery; four-fold replication. We compared melons of three groups of ripeness: early (I) – varieties mature in 55–75 days, mid-early (II) – ripen in 76–90 days, mid-late (III) – require 90 days until harvest. During the years of research, the duration of interphase periods varied from 18 to 59 days. An increase in the relative average daily air temperature by 1 °C reduced the phenophases duration on average by 1.02–4.43 days. The most pronounced changes were revealed in the third interphase period (seedlings – fruit formation beginning): the average value of the ecological variation corresponded to 27.5 %; maximum it was in the mid-late samples (25.3 %). We established a close negative correlation (from –0.72 to –0.99) between an increase in the relative average daily air temperature and duration of the phenophases of the first half of the melon plants growing season. Each genotype reacted individually to changes in external influences. The group of mid-late samples had the highest degree of variability. An increase in the relative average daily temperatures by 1 °C reduces the length of the interphase periods of plants of this group from 1.99 to 3.75 days. Among others, varieties ‘Idyllia’, ‘Gulnara’, ‘Ethiopka’ were the most stable.","PeriodicalId":22344,"journal":{"name":"TAURIDA HERALD OF THE AGRARIAN SCIENCES","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2021-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"80553366","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2021-01-01DOI: 10.33952/2542-0720-2021-3-27-47-60
Y. Gulyanov, N. Nikolaev, I. Yakovlev
Identification of varietal specificity of opto-biological properties of field crops is necessary for adequate interpretation of satellite images, rapid determination of phytometric parameters of crops, indication of the level of their development and justification of corrective technological solutions. The aim of the research was to evaluate the opto-biological properties and phytometric parameters of diverse biological varieties of winter wheat; identify their relationship and inter-variety variability in high-tech reference crops based on satellite and ground monitoring. Field studies were conducted in 2019-2020 on the site of competitive ecological variety testing laid on the experimental field of the Orenburg State Agrarian University in the zone of the southern steppes of the Orenburg Cis-Urals (Preduralye). During the study, we found that agrocenoses of different winter wheat varieties differ markedly in opto-biological properties expressed in normalized difference vegetation index (NDVI) values. Varieties ‘Grom’, ‘Don 95’, ‘Bystritsa’, ‘Spartak’, ‘Stanichnaya’ and ‘Sintetik’ were characterized by the lowest average NDVI values during the growing season (0.57-0.59). Higher NDVI values (0.67) were observed in the crops of ‘Zhemchuzhina Povolzhya’, ‘Kolos Orenburzhya’, ‘Orenburgskaya 105’, ‘Rifey’ and ‘Pionerskaya 32’ varieties. The variability between the varieties according to the lowest (0.51 – ‘Grom’, 0.52 – ‘Don 95’) and the highest (0.69 – ‘Kolos Orenburzhya’, 0.70 – ‘Pionerskaya 32’, 0.69 – ‘Orenburgskaya 105’) NDVI values during the maximum assimilation apparatus development reached 0.17-0.19 units (phase of full spring tillering). By the heading, when NDVI was 0.78–0.79 and 0.85 units, respectively, this difference somewhat leveled but, in general, remained significant – at the level of 0.08-0.11 units (10.9–14.9 %). The largest leaf area (30 thousand m2/ha) was typical for the crops of ‘Saratovskaya 17’, ‘Kolos Orenburzhya’, ‘Orenburgskaya 105’, ‘Rifey’ and ‘Pionerskaya 32’. There was no direct inter-variety relationship between the leaf area and NDVI of winter wheat crops (R 2= 0.38).
{"title":"VARIETAL SPECIFICITY OF OPTO-BIOLOGICAL PROPERTIES AND PHYTOMETRIC PARAMETERS OF WINTER WHEAT CROPS","authors":"Y. Gulyanov, N. Nikolaev, I. Yakovlev","doi":"10.33952/2542-0720-2021-3-27-47-60","DOIUrl":"https://doi.org/10.33952/2542-0720-2021-3-27-47-60","url":null,"abstract":"Identification of varietal specificity of opto-biological properties of field crops is necessary for adequate interpretation of satellite images, rapid determination of phytometric parameters of crops, indication of the level of their development and justification of corrective technological solutions. The aim of the research was to evaluate the opto-biological properties and phytometric parameters of diverse biological varieties of winter wheat; identify their relationship and inter-variety variability in high-tech reference crops based on satellite and ground monitoring. Field studies were conducted in 2019-2020 on the site of competitive ecological variety testing laid on the experimental field of the Orenburg State Agrarian University in the zone of the southern steppes of the Orenburg Cis-Urals (Preduralye). During the study, we found that agrocenoses of different winter wheat varieties differ markedly in opto-biological properties expressed in normalized difference vegetation index (NDVI) values. Varieties ‘Grom’, ‘Don 95’, ‘Bystritsa’, ‘Spartak’, ‘Stanichnaya’ and ‘Sintetik’ were characterized by the lowest average NDVI values during the growing season (0.57-0.59). Higher NDVI values (0.67) were observed in the crops of ‘Zhemchuzhina Povolzhya’, ‘Kolos Orenburzhya’, ‘Orenburgskaya 105’, ‘Rifey’ and ‘Pionerskaya 32’ varieties. The variability between the varieties according to the lowest (0.51 – ‘Grom’, 0.52 – ‘Don 95’) and the highest (0.69 – ‘Kolos Orenburzhya’, 0.70 – ‘Pionerskaya 32’, 0.69 – ‘Orenburgskaya 105’) NDVI values during the maximum assimilation apparatus development reached 0.17-0.19 units (phase of full spring tillering). By the heading, when NDVI was 0.78–0.79 and 0.85 units, respectively, this difference somewhat leveled but, in general, remained significant – at the level of 0.08-0.11 units (10.9–14.9 %). The largest leaf area (30 thousand m2/ha) was typical for the crops of ‘Saratovskaya 17’, ‘Kolos Orenburzhya’, ‘Orenburgskaya 105’, ‘Rifey’ and ‘Pionerskaya 32’. There was no direct inter-variety relationship between the leaf area and NDVI of winter wheat crops (R 2= 0.38).","PeriodicalId":22344,"journal":{"name":"TAURIDA HERALD OF THE AGRARIAN SCIENCES","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2021-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"86444871","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2021-01-01DOI: 10.33952/2542-0720-2021-3-27-61-74
S. Didovich, A. N. Pas, I. Danilova, O. Alekseenko
Currently, the search for biological agents that are alternative to chemical ones to protect agrocenoses from weeds, including quarantine objects like different types of ragweed, is relevant because they cause biological and technological damage to the environment, agriculture and have a negative impact on human health. The research was aimed at searching for biotically active elicitors of plant and microbial origin for the induction, reinforce of oxidative stress and inhibition of Ambrosia artemisiifolia L. growth. Strains were searched for and studied in 2019–2020 in laboratory experiments and greenhouse trials in the Research Institute of Agriculture of Crimea. Ragweed plants were grown in pots. Soil – chernozem southern. In the phase of 4–6 leaves, plants were treated with biorational preparative forms based on microbial and plant elicitors at a dose of 200 mkl/plant. For bioherbicidal composites, strains-inhibitors from the Research Institute of Agriculture of Crimea collection (CCM), plant extracts from the ragweed and glycerin were used. The inhibition efficiency was evaluated three weeks after treatment. The indices of height, phytomass, antioxidant status and ragweed damage degree were taken into account. We identified seven strains that inhibited plant growth by 0.13–1.08 g/plant (37–38 %) compared to the control variants: 1) water treatment, 2) bacterization with a phytopathogenic strain of Stagonosporopsis heliopsidis from the All-Russian Scientific Research Institute of Plant Protection collection. For the first time, we used ambrosia BAS to develop a birational herbicide to control the ragweed. Bacterization with biorational preparative forms based on biotically active elicitors of plant and microbial origin affected the homeostasis of ragweed, induced plant stress by blocking the enzymatic activity and the antioxidant protection systems. The activity of catalases and polyphenoloxidases decreased by 2.9–85.6 and 1.2–658.0 times, respectively, with a significant correlation between themselves (r = 0.66) and the correlation of catalase activity with plant phytomass (r = 0.72). The content of glutathione decreased by 2.5–2.7 compared to the control and had significant correlations with the activity of catalases (r = 0.63) and the phytomass of ragweed (r = 0.80) (p < 0.05) depending on the components of the biohebicidal formulations.
{"title":"BIORATIONAL METHOD OF AMBROSIA ARTEMISIIFOLIA L. GROWTH AND DEVELOPMENT INHIBITION","authors":"S. Didovich, A. N. Pas, I. Danilova, O. Alekseenko","doi":"10.33952/2542-0720-2021-3-27-61-74","DOIUrl":"https://doi.org/10.33952/2542-0720-2021-3-27-61-74","url":null,"abstract":"Currently, the search for biological agents that are alternative to chemical ones to protect agrocenoses from weeds, including quarantine objects like different types of ragweed, is relevant because they cause biological and technological damage to the environment, agriculture and have a negative impact on human health. The research was aimed at searching for biotically active elicitors of plant and microbial origin for the induction, reinforce of oxidative stress and inhibition of Ambrosia artemisiifolia L. growth. Strains were searched for and studied in 2019–2020 in laboratory experiments and greenhouse trials in the Research Institute of Agriculture of Crimea. Ragweed plants were grown in pots. Soil – chernozem southern. In the phase of 4–6 leaves, plants were treated with biorational preparative forms based on microbial and plant elicitors at a dose of 200 mkl/plant. For bioherbicidal composites, strains-inhibitors from the Research Institute of Agriculture of Crimea collection (CCM), plant extracts from the ragweed and glycerin were used. The inhibition efficiency was evaluated three weeks after treatment. The indices of height, phytomass, antioxidant status and ragweed damage degree were taken into account. We identified seven strains that inhibited plant growth by 0.13–1.08 g/plant (37–38 %) compared to the control variants: 1) water treatment, 2) bacterization with a phytopathogenic strain of Stagonosporopsis heliopsidis from the All-Russian Scientific Research Institute of Plant Protection collection. For the first time, we used ambrosia BAS to develop a birational herbicide to control the ragweed. Bacterization with biorational preparative forms based on biotically active elicitors of plant and microbial origin affected the homeostasis of ragweed, induced plant stress by blocking the enzymatic activity and the antioxidant protection systems. The activity of catalases and polyphenoloxidases decreased by 2.9–85.6 and 1.2–658.0 times, respectively, with a significant correlation between themselves (r = 0.66) and the correlation of catalase activity with plant phytomass (r = 0.72). The content of glutathione decreased by 2.5–2.7 compared to the control and had significant correlations with the activity of catalases (r = 0.63) and the phytomass of ragweed (r = 0.80) (p < 0.05) depending on the components of the biohebicidal formulations.","PeriodicalId":22344,"journal":{"name":"TAURIDA HERALD OF THE AGRARIAN SCIENCES","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2021-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"89181283","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2021-01-01DOI: 10.33952/2542-0720-2021-3-27-84-94
L. Kozlova, E. N. Noskova, F. Popov, E. Svetlakova
In the light of recent developments, the use of biological techniques in crop cultivation technologies needs to be expanded. The role of crop rotations with a high proportion of legume grasses, green manure crops and intermediate crops is increasing. The purpose of the research is to study soil fertility dynamics in terms of the main nutritional elements and determine their balance for the development of the adaptive landscape farming system in the North-Eastern region of the European part of Russia. Experiments were carried out on the experimental plots of the FARC of the North-East in 2002–2009. Soil – sod-podzolic middle loamy. We analyzed data of a long-term stationary experiment in four grain-fallow-grass field crop rotations. Meteorological conditions during the years of research were close to the average long-term values and favorable for crop cultivation. The introduction of low doses of fertilizers (N45P45K45 as mineral, 11.5–22.5 t/ha as green manure) increased the content of mobile phosphorus in the soil by 11–14 mg/kg (LSD05 = 9.5) in crop rotations with occupied and green manure fallows. An increase in exchangeable potassium by 15 mg/kg (LSD05 = 14.1) was noted in crop rotation with two clover fields for green manure. A positive balance of nitrogen and phosphorus was obtained in crop rotation with occupied and green manure fallows. The nitrogen balance was with a higher intake of +157.8 – +483.5 kg/ha and balance intensity – 115–140 %. The balance of phosphorus has developed at +6.0…+49.6 kg/ha. The positive balance of potassium was only in crop rotations with the introduction of green manure fertilizers and intermediate crop (+69.9…+175.8 kg/ha). The intensity of the balance of these elements was 101–118 %. In the control crop rotation with bare fallow at a minimum intake of nutrients, the negative balance of nitrogen, phosphorus and potassium was obtained; the intensity was below 100 %. Productivity of crop rotation was at the level of 4.90–5.41 thousand fodder units. According to the optimal combination of productivity and the balance of nutritional elements, crop rotation with two clover fields for green manure and an intermediate crop stood out.
{"title":"BALANCE OF NUTRITION ELEMENTS IN CROP ROTATION UNDER BIOLOGIZED ADAPTIVE LANDSCAPE FARMING","authors":"L. Kozlova, E. N. Noskova, F. Popov, E. Svetlakova","doi":"10.33952/2542-0720-2021-3-27-84-94","DOIUrl":"https://doi.org/10.33952/2542-0720-2021-3-27-84-94","url":null,"abstract":"In the light of recent developments, the use of biological techniques in crop cultivation technologies needs to be expanded. The role of crop rotations with a high proportion of legume grasses, green manure crops and intermediate crops is increasing. The purpose of the research is to study soil fertility dynamics in terms of the main nutritional elements and determine their balance for the development of the adaptive landscape farming system in the North-Eastern region of the European part of Russia. Experiments were carried out on the experimental plots of the FARC of the North-East in 2002–2009. Soil – sod-podzolic middle loamy. We analyzed data of a long-term stationary experiment in four grain-fallow-grass field crop rotations. Meteorological conditions during the years of research were close to the average long-term values and favorable for crop cultivation. The introduction of low doses of fertilizers (N45P45K45 as mineral, 11.5–22.5 t/ha as green manure) increased the content of mobile phosphorus in the soil by 11–14 mg/kg (LSD05 = 9.5) in crop rotations with occupied and green manure fallows. An increase in exchangeable potassium by 15 mg/kg (LSD05 = 14.1) was noted in crop rotation with two clover fields for green manure. A positive balance of nitrogen and phosphorus was obtained in crop rotation with occupied and green manure fallows. The nitrogen balance was with a higher intake of +157.8 – +483.5 kg/ha and balance intensity – 115–140 %. The balance of phosphorus has developed at +6.0…+49.6 kg/ha. The positive balance of potassium was only in crop rotations with the introduction of green manure fertilizers and intermediate crop (+69.9…+175.8 kg/ha). The intensity of the balance of these elements was 101–118 %. In the control crop rotation with bare fallow at a minimum intake of nutrients, the negative balance of nitrogen, phosphorus and potassium was obtained; the intensity was below 100 %. Productivity of crop rotation was at the level of 4.90–5.41 thousand fodder units. According to the optimal combination of productivity and the balance of nutritional elements, crop rotation with two clover fields for green manure and an intermediate crop stood out.","PeriodicalId":22344,"journal":{"name":"TAURIDA HERALD OF THE AGRARIAN SCIENCES","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2021-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"77855468","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2021-01-01DOI: 10.33952/2542-0720-2021-3-27-164-171
N. Sokolenko, N. Galushko, N. M. Komarov
Research on improving winter common wheat varieties in the context of combining high yield and grain quality is relevant. The research aimed to evaluate and select variety samples of winter common wheat with high technological indicators of grain quality for breeding purposes. In this study, we analyzed grain from 10 variety samples of the world collection; winter wheat grain of variety ‘Aivina’ served as a standard. Soil – ordinary medium-loamy medium-thick low-humus chernozem. Wheat was grown on the experimental fields of the North Caucasus FARC in the zone with unstable moistening on bare fallow. Grain vitreousness percentage in 2019 ranged between 44.0 and 53.0 %, in 2020 – 30.5–50.0 %. In the same years, this indicator for variety-standard ‘Aivina’ was 56.0 and 48.0 %, respectively. The gluten content in the grain depended on the weather conditions and genotype. Grain of all varieties harvested in 2019, including standard ‘Aivina’, had a high gluten content (28.2–35.6 %) and corresponded to strong wheat. In 2020, the situation was absolutely different. The amount of gluten in the grain of variety samples harvested in 2020 ranged between 22.9 and 34.6 %; for ‘Aivina’, this indicator reached 26.9 %. The gluten quality in all variety samples during the years of research was typical for class 2. The variety samples were characterized by a high protein content in the grain – 16.7–20.8 % and 13.5–20.4 %; the same indicator for ‘Aivina’ was 16.7 and 15.8 %. Sedimentation rate in the variety samples was 50–81 ml and 34–64 ml; in ‘Aivina’ – 50 and 43 ml. Maximum sedimentation values were noted for the variety ‘Prestizh’. It indicates the ability to form grain, the strength of which is typical for wheat-improver. The correlation between sedimentation and gluten content (r = 0.63), as well as between sedimentation and the falling number (r = 0.73), was positive and significant during the years of research. All studied genotypes are promising for breeding new wheat varieties as sources for obtaining high-quality grain.
{"title":"SOURCES OF HIGH-QUALITY GRAIN IN WINTER COMMON WHEAT BREEDING","authors":"N. Sokolenko, N. Galushko, N. M. Komarov","doi":"10.33952/2542-0720-2021-3-27-164-171","DOIUrl":"https://doi.org/10.33952/2542-0720-2021-3-27-164-171","url":null,"abstract":"Research on improving winter common wheat varieties in the context of combining high yield and grain quality is relevant. The research aimed to evaluate and select variety samples of winter common wheat with high technological indicators of grain quality for breeding purposes. In this study, we analyzed grain from 10 variety samples of the world collection; winter wheat grain of variety ‘Aivina’ served as a standard. Soil – ordinary medium-loamy medium-thick low-humus chernozem. Wheat was grown on the experimental fields of the North Caucasus FARC in the zone with unstable moistening on bare fallow. Grain vitreousness percentage in 2019 ranged between 44.0 and 53.0 %, in 2020 – 30.5–50.0 %. In the same years, this indicator for variety-standard ‘Aivina’ was 56.0 and 48.0 %, respectively. The gluten content in the grain depended on the weather conditions and genotype. Grain of all varieties harvested in 2019, including standard ‘Aivina’, had a high gluten content (28.2–35.6 %) and corresponded to strong wheat. In 2020, the situation was absolutely different. The amount of gluten in the grain of variety samples harvested in 2020 ranged between 22.9 and 34.6 %; for ‘Aivina’, this indicator reached 26.9 %. The gluten quality in all variety samples during the years of research was typical for class 2. The variety samples were characterized by a high protein content in the grain – 16.7–20.8 % and 13.5–20.4 %; the same indicator for ‘Aivina’ was 16.7 and 15.8 %. Sedimentation rate in the variety samples was 50–81 ml and 34–64 ml; in ‘Aivina’ – 50 and 43 ml. Maximum sedimentation values were noted for the variety ‘Prestizh’. It indicates the ability to form grain, the strength of which is typical for wheat-improver. The correlation between sedimentation and gluten content (r = 0.63), as well as between sedimentation and the falling number (r = 0.73), was positive and significant during the years of research. All studied genotypes are promising for breeding new wheat varieties as sources for obtaining high-quality grain.","PeriodicalId":22344,"journal":{"name":"TAURIDA HERALD OF THE AGRARIAN SCIENCES","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2021-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"77113906","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2021-01-01DOI: 10.33952/2542-0720-2021-4-28-129-137
L. V. Osipova, T. L. Kurnosova, I. A. Bykovskaya
In modern technologies of growing grain crops, high priority is given to the choice of varieties with significant adaptive potential and the development of ways to increase the resistance of plants to the action of various stresses. The purpose of our research was to identify the specific features of different varieties of barley during critical periods of growth. The studies were carried out in 2020–2021. The objects of research were varieties of spring barley created in the Moscow Research Institute of Agriculture. A series of laboratory and vegetative experiments were conducted, in the course of which we studied the indicators of the physiological status and varietal specificity of the resistance of spring barley to oxidative stress induced by an osmotically active sucrose solution during de-etiolation (laboratory experiments) and caused by soil drought at the VI stage of organogenesis (vegetative experiment, varieties ‘Vladimir’ and ‘Raushan’). The biometric indicators of sprouts and indicators of water status were evaluated. In all experiments, the varieties responded to stress by increasing the content of the oxidative stress marker malondialdehyde (MDA). Weak resistance of vegetative organs was noted in 1) roots – variety ‘Raushan’ (3.8 under stress conditions vs. 0.92 μM/g of raw mass under optimal conditions). ‘Moskovsky 2’ (8.1 vs.2.0), ‘Elf’ (4.5 vs. 1.38); 2) sprouts – ‘Raushan’ (4.6 vs.1.54), ‘Elf’ (5.0 vs. 1.37), ‘Nur’ (6.0 vs. 2.4). Varieties ‘Moskovsky 86’ and ‘Vladimir’ were the most resistant to stress since the accumulation of MDA increased to a lesser extent compared to its base content (‘Moskovsky 86’ – sprouts: 5.5 vs. 2.8; roots: 3.0 vs. 2.2 μM/g of raw mass; ‘Vladimir’ – sprouts: 3.4 vs. 2.9; roots: 3.9 vs.3.2 μM/g). Moreover, the content of chlorophylls a, b and carotenoids in varieties ‘Moskovsky 86’ and ‘Vladimir’ decreased respectively by 5.1; 5,9; 6.7 % and 8.0; 17,4; 6.9 % compared to the control options. Thus, variety ‘Vladimir’ is more stress-resistant than the other ones.
在现代粮食作物种植技术中，选择具有显著适应潜力的品种和开发提高植物对各种胁迫的抗性的方法是十分重要的。我们研究的目的是确定不同品种大麦在生长关键期的具体特征。这些研究是在2020-2021年进行的。研究对象是莫斯科农业研究所培育的春大麦品种。通过一系列室内和无性试验，研究了春大麦去黄化过程中渗透活性蔗糖溶液诱导的氧化应激(室内试验)和器官发生第6期土壤干旱引起的氧化应激(无性试验，品种‘Vladimir’和‘roushan’)的生理状态和品种特异性指标。对芽的生物特征指标和水分状况指标进行了评价。在所有试验中，这些品种都通过增加氧化应激标志物丙二醛(MDA)的含量来应对胁迫。1)根系品种‘若山’的营养器官抗性较弱(胁迫条件下为3.8 μM/g，最优条件下为0.92 μM/g)。《Moskovsky 2》(8.1 vs.2.0),“精灵”(4.5和1.38);2)芽——“Raushan”(4.6 vs.1.54),“精灵”(5.0和1.37),努尔(6.0和2.4)。品种‘Moskovsky 86’和‘Vladimir’对胁迫的抵抗力最强，因为MDA的积累比其基础含量增加的程度要小(‘Moskovsky 86’-芽:5.5比2.8;根:3.0 vs. 2.2 μM/g原料质量;“弗拉基米尔”——豆芽:3.4 vs 2.9;根:3.9 vs.3.2 μM/g)。品种Moskovsky 86和Vladimir的叶绿素a、b和类胡萝卜素含量分别下降了5.1个百分点;5、9;6.7%和8.0;17日4;与对照组相比，减少了6.9%。因此，品种“弗拉基米尔”比其他品种更抗压力。
{"title":"VARIETY-SPECIFIC FEATURES OF BARLEY AT DIFFERENT STAGES OF ONTOGENESIS","authors":"L. V. Osipova, T. L. Kurnosova, I. A. Bykovskaya","doi":"10.33952/2542-0720-2021-4-28-129-137","DOIUrl":"https://doi.org/10.33952/2542-0720-2021-4-28-129-137","url":null,"abstract":"In modern technologies of growing grain crops, high priority is given to the choice of varieties with significant adaptive potential and the development of ways to increase the resistance of plants to the action of various stresses. The purpose of our research was to identify the specific features of different varieties of barley during critical periods of growth. The studies were carried out in 2020–2021. The objects of research were varieties of spring barley created in the Moscow Research Institute of Agriculture. A series of laboratory and vegetative experiments were conducted, in the course of which we studied the indicators of the physiological status and varietal specificity of the resistance of spring barley to oxidative stress induced by an osmotically active sucrose solution during de-etiolation (laboratory experiments) and caused by soil drought at the VI stage of organogenesis (vegetative experiment, varieties ‘Vladimir’ and ‘Raushan’). The biometric indicators of sprouts and indicators of water status were evaluated. In all experiments, the varieties responded to stress by increasing the content of the oxidative stress marker malondialdehyde (MDA). Weak resistance of vegetative organs was noted in 1) roots – variety ‘Raushan’ (3.8 under stress conditions vs. 0.92 μM/g of raw mass under optimal conditions). ‘Moskovsky 2’ (8.1 vs.2.0), ‘Elf’ (4.5 vs. 1.38); 2) sprouts – ‘Raushan’ (4.6 vs.1.54), ‘Elf’ (5.0 vs. 1.37), ‘Nur’ (6.0 vs. 2.4). Varieties ‘Moskovsky 86’ and ‘Vladimir’ were the most resistant to stress since the accumulation of MDA increased to a lesser extent compared to its base content (‘Moskovsky 86’ – sprouts: 5.5 vs. 2.8; roots: 3.0 vs. 2.2 μM/g of raw mass; ‘Vladimir’ – sprouts: 3.4 vs. 2.9; roots: 3.9 vs.3.2 μM/g). Moreover, the content of chlorophylls a, b and carotenoids in varieties ‘Moskovsky 86’ and ‘Vladimir’ decreased respectively by 5.1; 5,9; 6.7 % and 8.0; 17,4; 6.9 % compared to the control options. Thus, variety ‘Vladimir’ is more stress-resistant than the other ones.","PeriodicalId":22344,"journal":{"name":"TAURIDA HERALD OF THE AGRARIAN SCIENCES","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2021-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"78387942","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
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