Inadequate amounts of fertilizers, especially nitrogen, have negative effects on ecosystems and food safety. On the other side, fertilizing, with an improvement in cropping systems, mainly in developed countries, has provided a food supply sufficient for both animal and human consumption. Therefore, with the increasing world population, the main task for the following decades is to develop highly productive agriculture, whilst at the same time preserving the quality of the environment. A multidisciplinary approach to winter wheat breeding and the inclusion of physiological indicators of nitrogen nutrition efficiency in this process could be helpful in reaching this goal. This study deals with the physiological efficiency of nitrogen as one of the physiological indicators, its relation with grain yield, heritability and variance and evaluation of Serbian winter wheat genotypes according to this indicator. The highest values of the physiological efficiency of nitrogen were registered at KG 165/2 and Lazarica. These genotypes, selected as superior in terms of this indicator, could be considered as desirable in wheat breeding theory, for improvement of production efficiency, environmental protection and development of ecological agriculture. However, further investigations of other physiological parameters, their correlations and correlations with yield and grain quality of wheat are necessary to define breeding programs and to obtain reliable results in this area.
{"title":"The possibilities of using physiological efficiency of nitrogen in wheat breeding in terms of ecological agriculture","authors":"O. Nikolić, M. Pavlovic","doi":"10.5937/ratpov56-21778","DOIUrl":"https://doi.org/10.5937/ratpov56-21778","url":null,"abstract":"Inadequate amounts of fertilizers, especially nitrogen, have negative effects on ecosystems and food safety. On the other side, fertilizing, with an improvement in cropping systems, mainly in developed countries, has provided a food supply sufficient for both animal and human consumption. Therefore, with the increasing world population, the main task for the following decades is to develop highly productive agriculture, whilst at the same time preserving the quality of the environment. A multidisciplinary approach to winter wheat breeding and the inclusion of physiological indicators of nitrogen nutrition efficiency in this process could be helpful in reaching this goal. This study deals with the physiological efficiency of nitrogen as one of the physiological indicators, its relation with grain yield, heritability and variance and evaluation of Serbian winter wheat genotypes according to this indicator. The highest values of the physiological efficiency of nitrogen were registered at KG 165/2 and Lazarica. These genotypes, selected as superior in terms of this indicator, could be considered as desirable in wheat breeding theory, for improvement of production efficiency, environmental protection and development of ecological agriculture. However, further investigations of other physiological parameters, their correlations and correlations with yield and grain quality of wheat are necessary to define breeding programs and to obtain reliable results in this area.","PeriodicalId":20996,"journal":{"name":"Ratarstvo i Povrtarstvo","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2019-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"71044443","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}
One of the very important problems in the agricultural production that existed for a long time is the risk from some weather adversity (hail, frost, flood, drought, storm, etc.), that is responsible for catastrophic consequences. On the other side, agricultural production is a specific area of business that is also strongly influenced by market, financial and institutional factors. These are all the dangers that do not depend on the will of man and his work, therefore it is necessary for farmers to recognize and predict the risks. There are different economic tools, which could be used to reduce the consequences from possible losses and bankassurance presents one of new products of risk management. It arises from the fact that there is need in agricultural production, through the provision of financial resources for the start of some production, also to provide simultaneously insurance against potential risks. Bankassurance is a financial instrument that integrates banking and insurance offer in the common financial market, and for farmers, this product is a combination of loans and insurance that can stabilize its revenues, but also to secure invested capital in the production. This paper presents the characteristics and advantages of bankassurance, i.e. the assignments of all three primary participants in this activity — the farmer, the bank and the insurance company. On the other side, a practical example of using bankassurance in agriculture is given and the specific advantages for farmers that are primarily connected with more favorable price of this new product are pointed out (simultaneously protects from several sources of risk - financial, production and market), but there is also additional security through the agricultural insurance.
{"title":"Bankassurance as financial instrument in agricultural risk management","authors":"T. Marković, Željko Kokot","doi":"10.5937/RATPOV56-19806","DOIUrl":"https://doi.org/10.5937/RATPOV56-19806","url":null,"abstract":"One of the very important problems in the agricultural production that existed for a long time is the risk from some weather adversity (hail, frost, flood, drought, storm, etc.), that is responsible for catastrophic consequences. On the other side, agricultural production is a specific area of business that is also strongly influenced by market, financial and institutional factors. These are all the dangers that do not depend on the will of man and his work, therefore it is necessary for farmers to recognize and predict the risks. There are different economic tools, which could be used to reduce the consequences from possible losses and bankassurance presents one of new products of risk management. It arises from the fact that there is need in agricultural production, through the provision of financial resources for the start of some production, also to provide simultaneously insurance against potential risks. Bankassurance is a financial instrument that integrates banking and insurance offer in the common financial market, and for farmers, this product is a combination of loans and insurance that can stabilize its revenues, but also to secure invested capital in the production. This paper presents the characteristics and advantages of bankassurance, i.e. the assignments of all three primary participants in this activity — the farmer, the bank and the insurance company. On the other side, a practical example of using bankassurance in agriculture is given and the specific advantages for farmers that are primarily connected with more favorable price of this new product are pointed out (simultaneously protects from several sources of risk - financial, production and market), but there is also additional security through the agricultural insurance.","PeriodicalId":20996,"journal":{"name":"Ratarstvo i Povrtarstvo","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2019-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"71043962","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}
E. Gultyaeva, S. Sibikeev, A. Druzhin, E. Shaydayuk
Leaf rust caused by Puccinia triticina is a common bread wheat disease in the Volga Region of Russia and breeding for this disease resistance is a priority for the Agricultural Research Institute for South-East Regions wheat program. Knowledge of the effective resistance genes present in the germplasm is relevant when selecting for effective and more durable resistance. P. triticina races with virulence to Lr9, Lr19, Lr26 and with other different virulence combinations and molecular markers of L r genes were used to determine which seedling resistance genes might be present in the 68 bread wheat lines and cultivars. Studies have shown that the effective protection against leaf rust widespread in the Volga Region spring bread wheat cultivars is controlled by Lr6Ag and Lr6Agi+Lr19 genes. In addition, cultivars carry Lr10, Lr19, Lr10+Lr26 genes. It was found that in the studied set of lines the leaf rust resistance is determined by the following Lr-genes and its combinations: 9, 10, 19, 26, 34, 37, 41, Satu, 6Ag. Moreover, usage frequency of Lr19 is 89.5%, Lr10 -40.4%, Lr26 -31.6%, Lr6Ag -21%, Lr28 -3.5%, Lr41 -3.5%, Lr9 - 1.8%, Lr34 -1.8%, Lr37 -1.8%, LrSatu -1.8%. The frequency of two L r-genes combinations is 45.7%, three - 21% and four Lr-genes - 5.3%. Mainly are used such Lr-genes combinations as: Lr19+Lr26 and Lr10+Lr19+Lr26 - 22.8%; Lr19+Lr6Ag -7%. The four Lr-genes combinations has been included Lr10+Lr26+Lr28?+Lr6Ag -1.8%, Lr1+Lr10+Lr26+Lr6Ag -1.8% and Lr10+Lr19+Lr28?+Lr6Ag -1.8%. In addition, the effective Lr19 with nonidentified Lr-genes from cultivar Saratovskaya 57 (L164) and a. elongatum (CI-7-57) combinations has been identified.
{"title":"Leaf rust resistance genes identification in the spring bread wheat breeding material of the Agricultural Research Institute for South-East Regions of Russia","authors":"E. Gultyaeva, S. Sibikeev, A. Druzhin, E. Shaydayuk","doi":"10.5937/RATPOV56-20733","DOIUrl":"https://doi.org/10.5937/RATPOV56-20733","url":null,"abstract":"Leaf rust caused by Puccinia triticina is a common bread wheat disease in the Volga Region of Russia and breeding for this disease resistance is a priority for the Agricultural Research Institute for South-East Regions wheat program. Knowledge of the effective resistance genes present in the germplasm is relevant when selecting for effective and more durable resistance. P. triticina races with virulence to Lr9, Lr19, Lr26 and with other different virulence combinations and molecular markers of L r genes were used to determine which seedling resistance genes might be present in the 68 bread wheat lines and cultivars. Studies have shown that the effective protection against leaf rust widespread in the Volga Region spring bread wheat cultivars is controlled by Lr6Ag and Lr6Agi+Lr19 genes. In addition, cultivars carry Lr10, Lr19, Lr10+Lr26 genes. It was found that in the studied set of lines the leaf rust resistance is determined by the following Lr-genes and its combinations: 9, 10, 19, 26, 34, 37, 41, Satu, 6Ag. Moreover, usage frequency of Lr19 is 89.5%, Lr10 -40.4%, Lr26 -31.6%, Lr6Ag -21%, Lr28 -3.5%, Lr41 -3.5%, Lr9 - 1.8%, Lr34 -1.8%, Lr37 -1.8%, LrSatu -1.8%. The frequency of two L r-genes combinations is 45.7%, three - 21% and four Lr-genes - 5.3%. Mainly are used such Lr-genes combinations as: Lr19+Lr26 and Lr10+Lr19+Lr26 - 22.8%; Lr19+Lr6Ag -7%. The four Lr-genes combinations has been included Lr10+Lr26+Lr28?+Lr6Ag -1.8%, Lr1+Lr10+Lr26+Lr6Ag -1.8% and Lr10+Lr19+Lr28?+Lr6Ag -1.8%. In addition, the effective Lr19 with nonidentified Lr-genes from cultivar Saratovskaya 57 (L164) and a. elongatum (CI-7-57) combinations has been identified.","PeriodicalId":20996,"journal":{"name":"Ratarstvo i Povrtarstvo","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2019-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"71044222","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}
J. Marinković, D. Bjelić, S. Šeremešić, B. Tintor, Jordana Ninkov, M. Zivanov, J. Vasin
The study monitored microbial abundance and dehydrogenase activity in chernozem soil under different cropping systems. Soil samples were taken from the long-term trials Crop Rotations and IOSDV, at the Rimski Sancevi experimental field of the Institute of Field and Vegetable Crops. The soil samples were collected in two years from ten cropping systems at three sampling depths. Number of the examined microbial groups was assessed by the indirect dilution method, while dehydrogenase enzyme activity was measured spectrophotometrically. Number of the tested microbial groups and dehydrogenase activity varied significantly depending on the cropping system and year of study, while sampling depth significantly affected enzyme activity. The highest number of microorganisms was obtained in non-agricultural soil and unfertilized soil under 2-year and 3-year rotation, while the highest dehydrogenase activity was recorded in non-agricultural soil and soil under wheat grown in monoculture.
{"title":"Microbial abundance and activity in chernozem under different cropping systems","authors":"J. Marinković, D. Bjelić, S. Šeremešić, B. Tintor, Jordana Ninkov, M. Zivanov, J. Vasin","doi":"10.5937/RATPOV55-15413","DOIUrl":"https://doi.org/10.5937/RATPOV55-15413","url":null,"abstract":"The study monitored microbial abundance and dehydrogenase activity in chernozem soil under different cropping systems. Soil samples were taken from the long-term trials Crop Rotations and IOSDV, at the Rimski Sancevi experimental field of the Institute of Field and Vegetable Crops. The soil samples were collected in two years from ten cropping systems at three sampling depths. Number of the examined microbial groups was assessed by the indirect dilution method, while dehydrogenase enzyme activity was measured spectrophotometrically. Number of the tested microbial groups and dehydrogenase activity varied significantly depending on the cropping system and year of study, while sampling depth significantly affected enzyme activity. The highest number of microorganisms was obtained in non-agricultural soil and unfertilized soil under 2-year and 3-year rotation, while the highest dehydrogenase activity was recorded in non-agricultural soil and soil under wheat grown in monoculture.","PeriodicalId":20996,"journal":{"name":"Ratarstvo i Povrtarstvo","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2018-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"71043100","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}
M. Ugrinović, Z. Girek, M. Brdar-Jokanović, Slađan Adžić, S. Pavlović, J. Damnjanovic, B. Zečević
One of the main tasks for every certified organic vegetable producer is to grow healthy and well-developed transplants. The aim of this study was to examine different substrates designed for the production of organic tomato transplants. On the basis of preliminary experiments, seven substrates consisting of different parts of natural peat, vermicompost, shrub and tree leaves compost and zeolites were compared with standard commercial substrates using tomato (Solanum lycopersicum L.) transplants grown in pots. The data concerning plant height, number of leaves, fresh plant mass, appearance of flower buds were collected. The differences in the examined traits were not significant for the majority of substrates. The zeolite-based substrate with high peat and vermicompost content achieved the best results and its production for the market should be considered. Three zeolite-based substrates with high rates of vermicompost and compost should be used as a model for tomato transplants substrate preparation.
{"title":"Tomato transplants grown on mixtures suitable for organic production","authors":"M. Ugrinović, Z. Girek, M. Brdar-Jokanović, Slađan Adžić, S. Pavlović, J. Damnjanovic, B. Zečević","doi":"10.5937/RATPOV55-15633","DOIUrl":"https://doi.org/10.5937/RATPOV55-15633","url":null,"abstract":"One of the main tasks for every certified organic vegetable producer is to grow healthy and well-developed transplants. The aim of this study was to examine different substrates designed for the production of organic tomato transplants. On the basis of preliminary experiments, seven substrates consisting of different parts of natural peat, vermicompost, shrub and tree leaves compost and zeolites were compared with standard commercial substrates using tomato (Solanum lycopersicum L.) transplants grown in pots. The data concerning plant height, number of leaves, fresh plant mass, appearance of flower buds were collected. The differences in the examined traits were not significant for the majority of substrates. The zeolite-based substrate with high peat and vermicompost content achieved the best results and its production for the market should be considered. Three zeolite-based substrates with high rates of vermicompost and compost should be used as a model for tomato transplants substrate preparation.","PeriodicalId":20996,"journal":{"name":"Ratarstvo i Povrtarstvo","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2018-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"71043679","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}
A. Vučurović, O. Petrović-Obradović, Anđa Radonjić, D. Nikolić, K. Zečević, I. Stanković, B. Krstic
The fauna of aphids appearing on cucurbits, including oilseed pumpkin have been poorly investigated in Serbia. Yellow water traps were used to determine the diversity of aphid species visiting cucurbits in Serbia and to monitor their flight activity. During the years 2009 to 2011, a total of 1,447 specimens were collected and a total of 57 different aphid taxa were identified. In 2009, the highest total number of aphids were caught (755), followed by 203 and 489 aphids in 2010 and 2011, respectively. The most abundant species were Aphis fabae (15%), Myizus persicae (13.4%) and Acyrthosiphonpisum (11.7%), followed by Anoecia corni (6.4%) and Aphis gossypii (5.6%). All of them, except A. corni, are reported as efficient vectors of cucurbit viruses. These five species represent 52.1% of all aphid species collected within this study. Out of 57 taxa found in oilseed pumpkin crops, 17 are known as vectors of ZYMV, 18 of WMV and 15 of CMV. Generally, 25 out of a total of 57 taxa are known as vectors of at least one of three viruses present in Serbia. From total of 1,447 specimens collected during three years of investigation, 917 (63.4%) are vectors of at least one of three viruses. Individual oilseed pumpkin plants were frequently colonized by A. gossypii during all three years of investigation. Results of this study showed that Serbian oilseed pumpkin growing localities are grouped among medium to reach in aphidofauna, according to total Shannon-Weaver index values which varied from 1.8 to 2.8. The highest value of Shannon-Weaver (2.8) was recorded in the Backi Petrovac I locality in 2009, while the lowest Shannon-Weaver (1.8) was recorded in Kisac locality in 2010. The maximum values of Shannon-Weaver diversity index in almost all crops were recorded in the second week of investigation or in early stages of oilseed pumpkin growth when plants had 5-6 true leaves or were in flowering stage, when potential virus infection could lead to significant yield losses.
{"title":"Diversity and flight activity of aphid species as potential vectors of oilseed pumpkin viruses in Serbia","authors":"A. Vučurović, O. Petrović-Obradović, Anđa Radonjić, D. Nikolić, K. Zečević, I. Stanković, B. Krstic","doi":"10.5937/RATPOV55-16608","DOIUrl":"https://doi.org/10.5937/RATPOV55-16608","url":null,"abstract":"The fauna of aphids appearing on cucurbits, including oilseed pumpkin have been poorly investigated in Serbia. Yellow water traps were used to determine the diversity of aphid species visiting cucurbits in Serbia and to monitor their flight activity. During the years 2009 to 2011, a total of 1,447 specimens were collected and a total of 57 different aphid taxa were identified. In 2009, the highest total number of aphids were caught (755), followed by 203 and 489 aphids in 2010 and 2011, respectively. The most abundant species were Aphis fabae (15%), Myizus persicae (13.4%) and Acyrthosiphonpisum (11.7%), followed by Anoecia corni (6.4%) and Aphis gossypii (5.6%). All of them, except A. corni, are reported as efficient vectors of cucurbit viruses. These five species represent 52.1% of all aphid species collected within this study. Out of 57 taxa found in oilseed pumpkin crops, 17 are known as vectors of ZYMV, 18 of WMV and 15 of CMV. Generally, 25 out of a total of 57 taxa are known as vectors of at least one of three viruses present in Serbia. From total of 1,447 specimens collected during three years of investigation, 917 (63.4%) are vectors of at least one of three viruses. Individual oilseed pumpkin plants were frequently colonized by A. gossypii during all three years of investigation. Results of this study showed that Serbian oilseed pumpkin growing localities are grouped among medium to reach in aphidofauna, according to total Shannon-Weaver index values which varied from 1.8 to 2.8. The highest value of Shannon-Weaver (2.8) was recorded in the Backi Petrovac I locality in 2009, while the lowest Shannon-Weaver (1.8) was recorded in Kisac locality in 2010. The maximum values of Shannon-Weaver diversity index in almost all crops were recorded in the second week of investigation or in early stages of oilseed pumpkin growth when plants had 5-6 true leaves or were in flowering stage, when potential virus infection could lead to significant yield losses.","PeriodicalId":20996,"journal":{"name":"Ratarstvo i Povrtarstvo","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2018-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"71043920","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}
S. Mikić, L. Brbaklić, D. Stanisavljevic, A. Kondić-Špika, G. Bekavac, B. Mitrović, D. Trkulja, M. Mirosavljević
The aim of this study was to estimate genetic diversity of 97 modern maize hybrids cultivated in Serbia with 12 microsatellite markers. In total, 89 alleles were detected, with the average of 7.4 alleles per locus. The polymorphic information content ranged from 0.42, for umc1792, to 0.81, for dupssr10, with an average of 0.64. The pairwise relatedness Ritland's values varied between 0.787 and -0.129. Eight markers were sufficient to differentiate hybrids with unique genotypes. A principal coordinate analysis distinguished early and late maturing groups of hybrids, although the observed differentiation between groups was low (Fst = 0.4%). Two markers, bnlg1556 and umc1075, contributed most to the discrimination between early and late genotypes. The values of parameters of molecular genetic diversity were higher in early than in late maturing hybrids, indicating broader genetic basis of the former. A high level of polymorphism of the markers indicates their suitability for fingerprinting.
{"title":"Molecular diversity and microsatellite polymorphism of modern maize hybrids","authors":"S. Mikić, L. Brbaklić, D. Stanisavljevic, A. Kondić-Špika, G. Bekavac, B. Mitrović, D. Trkulja, M. Mirosavljević","doi":"10.5937/RATPOV55-17535","DOIUrl":"https://doi.org/10.5937/RATPOV55-17535","url":null,"abstract":"The aim of this study was to estimate genetic diversity of 97 modern maize hybrids cultivated in Serbia with 12 microsatellite markers. In total, 89 alleles were detected, with the average of 7.4 alleles per locus. The polymorphic information content ranged from 0.42, for umc1792, to 0.81, for dupssr10, with an average of 0.64. The pairwise relatedness Ritland's values varied between 0.787 and -0.129. Eight markers were sufficient to differentiate hybrids with unique genotypes. A principal coordinate analysis distinguished early and late maturing groups of hybrids, although the observed differentiation between groups was low (Fst = 0.4%). Two markers, bnlg1556 and umc1075, contributed most to the discrimination between early and late genotypes. The values of parameters of molecular genetic diversity were higher in early than in late maturing hybrids, indicating broader genetic basis of the former. A high level of polymorphism of the markers indicates their suitability for fingerprinting.","PeriodicalId":20996,"journal":{"name":"Ratarstvo i Povrtarstvo","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2018-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"71043527","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}
Benzoxazinoids (1,4-benzoxazin-3(4H)-one derivatives, BXs) are plant secondary metabolites that play a crucial role in plant resistance to insects, fungi, bacteria and nematodes, and in weed suppression during early plant life. These biochemicals are constitutive compounds found in some members of the family Poaceae and have been studied in detail in maize (Zea mays L.), wheat (Triticum aestivum L.) and rye (Secale cereale L.). The most effective allelopathic benzoxazinoids are 2,4-dihydroxy-7-methoxy-2H-1,4-benzoxazin-3(4H)-one (DIMBOA) and 2,4-dihydroxy-1,4-benzoxazin-3-one (DIBOA), classified as hydroxamic acids. Aiming to draw attention to the importance of BXs in plant defence and their potential application in cereal protection, this review summarises the recent findings in genetic control, biochemical pathways, and the mode of action of these secondary metabolites and addresses unresolved questions related to BXs.
{"title":"Benzoxazinoids - protective secondary metabolites in cereals: Biochemistry and genetic control","authors":"S. Mikić, Shakoor Ahmad","doi":"10.5937/RATPOV55-12210","DOIUrl":"https://doi.org/10.5937/RATPOV55-12210","url":null,"abstract":"Benzoxazinoids (1,4-benzoxazin-3(4H)-one derivatives, BXs) are plant secondary metabolites that play a crucial role in plant resistance to insects, fungi, bacteria and nematodes, and in weed suppression during early plant life. These biochemicals are constitutive compounds found in some members of the family Poaceae and have been studied in detail in maize (Zea mays L.), wheat (Triticum aestivum L.) and rye (Secale cereale L.). The most effective allelopathic benzoxazinoids are 2,4-dihydroxy-7-methoxy-2H-1,4-benzoxazin-3(4H)-one (DIMBOA) and 2,4-dihydroxy-1,4-benzoxazin-3-one (DIBOA), classified as hydroxamic acids. Aiming to draw attention to the importance of BXs in plant defence and their potential application in cereal protection, this review summarises the recent findings in genetic control, biochemical pathways, and the mode of action of these secondary metabolites and addresses unresolved questions related to BXs.","PeriodicalId":20996,"journal":{"name":"Ratarstvo i Povrtarstvo","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2018-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"71043269","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}
M. Mirosavljević, V. Momčilović, N. Pržulj, I. Maksimović, M. Putnik-Delić
Dry matter accumulation is one of the best estimates for crop reaction to the effect of genotype or environmental factors. However, there is a lack of information about comparative crop growth between wheat and barley under conditions of the Pannonian climate. The objectives of this work were to study and compare the patterns of biomass accumulation in wheat and barley, and identify the role of the logistic curve parameters in the determination of the final biomass. Therefore, field trials with two two-row winter barley and two winter wheat cultivars were carried out in two successive growing seasons with four sowing dates. Results from our study showed that grain yield and crop biomass were under significant influence of cultivar and sowing date in both growing seasons. The highest grain yield and crop biomass at maturity were obtained with early sowing - first and second sowing date. There was a significant positive relationship between the crop biomass and grain yield in both species. Barley and wheat had similar strategies for biomass determination. Crop biomass at maturity was positively associated with the duration of growing phases, while the relationship with weighted mean absolute growth rate was negative. Early sowing enables prolongation in duration of different phases of crop biomass accumulation, leading to significant biomass and grain yield increase.
{"title":"Dry matter accumulation of winter wheat and barley at different sowing dates","authors":"M. Mirosavljević, V. Momčilović, N. Pržulj, I. Maksimović, M. Putnik-Delić","doi":"10.5937/RATPOV55-16706","DOIUrl":"https://doi.org/10.5937/RATPOV55-16706","url":null,"abstract":"Dry matter accumulation is one of the best estimates for crop reaction to the effect of genotype or environmental factors. However, there is a lack of information about comparative crop growth between wheat and barley under conditions of the Pannonian climate. The objectives of this work were to study and compare the patterns of biomass accumulation in wheat and barley, and identify the role of the logistic curve parameters in the determination of the final biomass. Therefore, field trials with two two-row winter barley and two winter wheat cultivars were carried out in two successive growing seasons with four sowing dates. Results from our study showed that grain yield and crop biomass were under significant influence of cultivar and sowing date in both growing seasons. The highest grain yield and crop biomass at maturity were obtained with early sowing - first and second sowing date. There was a significant positive relationship between the crop biomass and grain yield in both species. Barley and wheat had similar strategies for biomass determination. Crop biomass at maturity was positively associated with the duration of growing phases, while the relationship with weighted mean absolute growth rate was negative. Early sowing enables prolongation in duration of different phases of crop biomass accumulation, leading to significant biomass and grain yield increase.","PeriodicalId":20996,"journal":{"name":"Ratarstvo i Povrtarstvo","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2018-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"71043861","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}
Peppers (Capsicum annuum L.) have a very diverse use in Serbia. Preparing ajvar (pepper spread) is the most common way in Serbia to preserve pepper for wintertime. Besides larger fruits, high total soluble solids in red pepper fruits are very important for better ajvar. The goal of our breeding program is to develop new pepper cultivars with high fruit weight and high total soluble solids. For this purpose, we crossed Amfora (kapia variety from the Institute of Field and Vegetable Crops, Novi Sad, Serbia) and Piquillo de Lodosa (a small conical variety from Spain) in 2014. From this crossing, 180 F2 plants were transplanted into open field in 2016. The fruits were evaluated for seven quantitative traits: weight, length, diameter, index, locule number, pericarp thickness and total soluble solids (Brix). The principal component analysis was used to identify the most significant traits. The mean values were compared with the Dunnett test. Relationships between traits were calculated by Pearson correlation coefficients. Fruits from F2 plants were ranged between parents mainly. Fruit weight was positively correlated with fruit length, fruit diameter and pericarp thickness, but negatively with total soluble solids. Low heritability for total soluble solids and a negative correlation between total soluble solids and fruit weight makes it difficult to improve both important traits in one variety. The task in the future breeding process is to find crossing combination in pepper which will harmonize these two important fruit traits.
辣椒(Capsicum annuum L.)在塞尔维亚有非常多样化的用途。准备ajvar(胡椒酱)是塞尔维亚最常见的冬季保存胡椒的方法。除了果实较大外，红辣椒果实中高可溶性固形物含量对获得较好的辣度也很重要。我们育种计划的目标是培育高果实重和高总可溶性固形物的辣椒新品种。为此，我们在2014年杂交了Amfora(来自塞尔维亚诺维萨德大田和蔬菜作物研究所的kapia品种)和Piquillo de Lodosa(来自西班牙的小圆锥形品种)。通过该杂交，2016年将180株F2移栽到露地。对果实的质量、长度、直径、指数、室数、果皮厚度和总可溶性固形物(Brix)等7个数量性状进行了评价。采用主成分分析方法鉴定最显著性状。将平均值与Dunnett检验进行比较。性状间的关系采用Pearson相关系数计算。F2植株的果实主要分布在亲本之间。果实重与果实长、果实直径和果皮厚度呈正相关，与可溶性固形物总量呈负相关。总可溶性固形物遗传力低，且总可溶性固形物与果实重呈负相关，这使得在一个品种中难以提高这两个重要性状。今后育种工作的任务是在辣椒中找到能协调这两个重要果实性状的杂交组合。
{"title":"Selection and heritability of F2 sweet pepper offspring from the cross Amfora x Piquillo de Lodosa","authors":"D. Danojević, S. Medić-Pap, J. Červenski","doi":"10.5937/RATPOV55-16267","DOIUrl":"https://doi.org/10.5937/RATPOV55-16267","url":null,"abstract":"Peppers (Capsicum annuum L.) have a very diverse use in Serbia. Preparing ajvar (pepper spread) is the most common way in Serbia to preserve pepper for wintertime. Besides larger fruits, high total soluble solids in red pepper fruits are very important for better ajvar. The goal of our breeding program is to develop new pepper cultivars with high fruit weight and high total soluble solids. For this purpose, we crossed Amfora (kapia variety from the Institute of Field and Vegetable Crops, Novi Sad, Serbia) and Piquillo de Lodosa (a small conical variety from Spain) in 2014. From this crossing, 180 F2 plants were transplanted into open field in 2016. The fruits were evaluated for seven quantitative traits: weight, length, diameter, index, locule number, pericarp thickness and total soluble solids (Brix). The principal component analysis was used to identify the most significant traits. The mean values were compared with the Dunnett test. Relationships between traits were calculated by Pearson correlation coefficients. Fruits from F2 plants were ranged between parents mainly. Fruit weight was positively correlated with fruit length, fruit diameter and pericarp thickness, but negatively with total soluble solids. Low heritability for total soluble solids and a negative correlation between total soluble solids and fruit weight makes it difficult to improve both important traits in one variety. The task in the future breeding process is to find crossing combination in pepper which will harmonize these two important fruit traits.","PeriodicalId":20996,"journal":{"name":"Ratarstvo i Povrtarstvo","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2018-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"71043733","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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