Pub Date : 2021-11-19DOI: 10.24193/contrib.bot.56.9
D. Kupryushkin, O. Demina, P. Dmitriev, Ludmila Rogal, V. Chokheli, V. Lysenko
Unique plant habitats are described for the petrophytic communities of the Donets ridge. A scientific basis for the conservation of zonal steppe vegetation and its petrophytic variants is proposed using a number of the characteristic petrophytic communities of Donets ridge as examples. Several criteria of conservation importance are proposed to evaluate the reasons for including the natural territories in the list of protected objects. Recommendations for improving the protection of the steppe petrophyte vegetation of the Donetsk ridge are given. Proposals for creating an ecological network within the studied area have been formulated.
{"title":"PETROPHYTIC VEGETATION OF THE DONETS RIDGE","authors":"D. Kupryushkin, O. Demina, P. Dmitriev, Ludmila Rogal, V. Chokheli, V. Lysenko","doi":"10.24193/contrib.bot.56.9","DOIUrl":"https://doi.org/10.24193/contrib.bot.56.9","url":null,"abstract":"Unique plant habitats are described for the petrophytic communities of the Donets ridge. A scientific basis for the conservation of zonal steppe vegetation and its petrophytic variants is proposed using a number of the characteristic petrophytic communities of Donets ridge as examples. Several criteria of conservation importance are proposed to evaluate the reasons for including the natural territories in the list of protected objects. Recommendations for improving the protection of the steppe petrophyte vegetation of the Donetsk ridge are given. Proposals for creating an ecological network within the studied area have been formulated.","PeriodicalId":37521,"journal":{"name":"Contributii Botanice","volume":"1 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2021-11-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"69191380","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 : 2021-11-19DOI: 10.24193/contrib.bot.56.15
Fatemeh Mousavimanesh, M. Keshavarzi, Zahra Nazem Bokaee
Lycium (Solanaceae) has more than 100 species in arid and semi-arid parts of the world. In Iran, this medicinal plant is represented by 6 species, on which no palynological study has been conducted. Pollen morphology of 7 taxa are considered for the first time to evaluate the species relationships based on palynological data. Observations were made by use of Scanning electron microscopy on untreated pollen grains. Multivariate statistical analyses were carried out for qualitative and quantitative pollen features in the species studied. Results show that all pollen grains were monad, isopolar, zonotricolporate in prolate and preprolate shape. Exine sculpture was of striate and regulate patterns. Variations in pollen grains are considered to overcome the identification problems in species separation in morphologically similar taxa in this genus in Iran. The importance of pollen features in delimitation in some genera of Solanaceae was previously proven and the present study elucidates that some features as exine sculpture and some quantitative characters are of diagnostic importance in Lycium species native to Iran.
{"title":"POLLEN MORPHOLOGY OF LYCIUM (SOLANACEAE) SPECIES IN IRAN","authors":"Fatemeh Mousavimanesh, M. Keshavarzi, Zahra Nazem Bokaee","doi":"10.24193/contrib.bot.56.15","DOIUrl":"https://doi.org/10.24193/contrib.bot.56.15","url":null,"abstract":"Lycium (Solanaceae) has more than 100 species in arid and semi-arid parts of the world. In Iran, this medicinal plant is represented by 6 species, on which no palynological study has been conducted. Pollen morphology of 7 taxa are considered for the first time to evaluate the species relationships based on palynological data. Observations were made by use of Scanning electron microscopy on untreated pollen grains. Multivariate statistical analyses were carried out for qualitative and quantitative pollen features in the species studied. Results show that all pollen grains were monad, isopolar, zonotricolporate in prolate and preprolate shape. Exine sculpture was of striate and regulate patterns. Variations in pollen grains are considered to overcome the identification problems in species separation in morphologically similar taxa in this genus in Iran. The importance of pollen features in delimitation in some genera of Solanaceae was previously proven and the present study elucidates that some features as exine sculpture and some quantitative characters are of diagnostic importance in Lycium species native to Iran.","PeriodicalId":37521,"journal":{"name":"Contributii Botanice","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2021-11-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"47323568","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 : 2021-11-19DOI: 10.24193/contrib.bot.56.11
M. Z. I. H. Tuhin, T. I. Anee, N. Ahmed, Mira Rahman, Khussboo Rahman, M. Hasanuzzaman
An experiment was conducted to investigate the effect of different levels of cadmium (Cd) stress on germination, morphology, physiology and yield of rice. There were five treatments, viz. control (no Cd), 0.5 mM CdCl2, 1 mM CdCl2, 1.5 mM CdCl2 and 2 mM CdCl2, carried out by a randomized complete block design (RCBD) with three replications. Cadmium stress caused a significant reduction of plant height and tillers hill-1 in a dose-dependent manner. The highest decline of relative water content and SPAD value was found at 1.5 mM (11 and 16%) and 2 mM (14 and 19%) Cd stress compared to the control. The number of effective tillers hill-1, filled grains panicle-1, 1000-grain weight, length of panicle, grain yield and straw yield reduced significantly by 44, 32, 15, 24, 37 and 45%, respectively, over the control. Germination and seedling-related parameters were recorded 10 days after germination. The lowest germination percentage (27%), germination index (27%) and seedling vigour index (49%) were observed at the highest level of Cd stress in comparison to the control. Cadmium stress resulted in maximum abnormal seedlings and markedly reduced length of root and shoot as well as their fresh and dry weight. Root shoot ratio showed differential responses to Cd stress. Thus, it can be concluded that a higher level of Cd in soil has a detrimental effect on seed germination, morphology, physiology and yield of rice.
通过试验研究了不同镉胁迫对水稻萌发、形态、生理和产量的影响。5个处理，即对照(无Cd)、0.5 mM CdCl2、1 mM CdCl2、1.5 mM CdCl2和2 mM CdCl2，采用随机完全区组设计(RCBD)， 3个重复。镉胁迫导致植株高度和分蘖hill-1显著降低，且呈剂量依赖性。与对照相比，1.5 mM(11%和16%)和2 mM(14%和19%)Cd胁迫下相对含水量和SPAD值下降幅度最大。有效分蘖数、穗数-1、千粒重、穗长、籽粒产量和秸秆产量分别较对照显著减少44、32、15、24、37和45%。在萌发后10天记录发芽和幼苗相关参数。与对照相比，最高镉胁迫下的发芽率(27%)、发芽指数(27%)和幼苗活力指数(49%)最低。镉胁迫导致异常苗数量最多，根、梢长、鲜重和干重显著减少。根冠比对Cd胁迫表现出不同的响应。因此，土壤中较高的镉水平对水稻种子萌发、形态、生理和产量都有不利影响。
{"title":"SEED GERMINATION BEHAVIOUR, SEEDLING GROWTH, MORPHO-PHYSIOLOGICAL AND YIELD ATTRIBUTES OF RICE GROWN IN CADMIUM-ADDED SOIL","authors":"M. Z. I. H. Tuhin, T. I. Anee, N. Ahmed, Mira Rahman, Khussboo Rahman, M. Hasanuzzaman","doi":"10.24193/contrib.bot.56.11","DOIUrl":"https://doi.org/10.24193/contrib.bot.56.11","url":null,"abstract":"An experiment was conducted to investigate the effect of different levels of cadmium (Cd) stress on germination, morphology, physiology and yield of rice. There were five treatments, viz. control (no Cd), 0.5 mM CdCl2, 1 mM CdCl2, 1.5 mM CdCl2 and 2 mM CdCl2, carried out by a randomized complete block design (RCBD) with three replications. Cadmium stress caused a significant reduction of plant height and tillers hill-1 in a dose-dependent manner. The highest decline of relative water content and SPAD value was found at 1.5 mM (11 and 16%) and 2 mM (14 and 19%) Cd stress compared to the control. The number of effective tillers hill-1, filled grains panicle-1, 1000-grain weight, length of panicle, grain yield and straw yield reduced significantly by 44, 32, 15, 24, 37 and 45%, respectively, over the control. Germination and seedling-related parameters were recorded 10 days after germination. The lowest germination percentage (27%), germination index (27%) and seedling vigour index (49%) were observed at the highest level of Cd stress in comparison to the control. Cadmium stress resulted in maximum abnormal seedlings and markedly reduced length of root and shoot as well as their fresh and dry weight. Root shoot ratio showed differential responses to Cd stress. Thus, it can be concluded that a higher level of Cd in soil has a detrimental effect on seed germination, morphology, physiology and yield of rice.","PeriodicalId":37521,"journal":{"name":"Contributii Botanice","volume":"1 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2021-11-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"69190743","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 : 2021-11-19DOI: 10.24193/contrib.bot.56.14
P. Cuza
The effects of different factors on the growth in height and diameter of oak saplings in comparative cultures were estimated: progeny from autumn and spring sowing of acorns (1); growing conditions of pedunculate oak (Quercus robur L.) mother plants (2); the initial planting density of sessile oak (Q. petraea Liebl.) (3); natural lightening level of downy oak (Q. pubescens Willd.) mother plants (4). The pedunculate oak seedlings obtained after spring sowing were characterized by faster growth compared with those obtained from the autumn sowing. The lower growth rate observed in seedlings sown in autumn was due to the prolonged frosty weather during winter, which led to a decrease in acorn viability and progeny vigour. Due to the higher genetic diversity of the progeny obtained from the free-pollinated pedunculate oaks, it is possible that their growth was more intense and stable in comparison to those of saplings obtained from the acorns of isolated trees. The planting under the forest canopy had a clear influence on the growth in height of saplings. At low density levels (1.0 x 1.0 m), the sessile oak saplings benefited from larger availability of soil nutrients and displayed the highest growth, contrasting with those planted at high density (0.5 x 0.5 m). The deep and moderate shading caused a substantial reduction in the growth of downy oak saplings. Therefore, when planting, it is recommended to avoid using fast-growing species, which, due to asymmetric competition, could drastically reduce the growth in height of the downy oak saplings. Prolonged regeneration of the pruned root system following the transplantation process of sessile and downy oak seedlings determined their very slow growth in the first years of life.
{"title":"EMPIRICAL USE OF THREE OAK SPECIES IN AFFORESTATION: LESSONS FROM SOWING AND TRANSPLANTING EXPERIMENTS","authors":"P. Cuza","doi":"10.24193/contrib.bot.56.14","DOIUrl":"https://doi.org/10.24193/contrib.bot.56.14","url":null,"abstract":"The effects of different factors on the growth in height and diameter of oak saplings in comparative cultures were estimated: progeny from autumn and spring sowing of acorns (1); growing conditions of pedunculate oak (Quercus robur L.) mother plants (2); the initial planting density of sessile oak (Q. petraea Liebl.) (3); natural lightening level of downy oak (Q. pubescens Willd.) mother plants (4). The pedunculate oak seedlings obtained after spring sowing were characterized by faster growth compared with those obtained from the autumn sowing. The lower growth rate observed in seedlings sown in autumn was due to the prolonged frosty weather during winter, which led to a decrease in acorn viability and progeny vigour. Due to the higher genetic diversity of the progeny obtained from the free-pollinated pedunculate oaks, it is possible that their growth was more intense and stable in comparison to those of saplings obtained from the acorns of isolated trees. The planting under the forest canopy had a clear influence on the growth in height of saplings. At low density levels (1.0 x 1.0 m), the sessile oak saplings benefited from larger availability of soil nutrients and displayed the highest growth, contrasting with those planted at high density (0.5 x 0.5 m). The deep and moderate shading caused a substantial reduction in the growth of downy oak saplings. Therefore, when planting, it is recommended to avoid using fast-growing species, which, due to asymmetric competition, could drastically reduce the growth in height of the downy oak saplings. Prolonged regeneration of the pruned root system following the transplantation process of sessile and downy oak seedlings determined their very slow growth in the first years of life.","PeriodicalId":37521,"journal":{"name":"Contributii Botanice","volume":"1 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2021-11-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"69190810","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 : 2021-11-19DOI: 10.24193/contrib.bot.56.2
I. Sîrbu, P. Anastasiu, Mihaela Urziceanu, T. Șesan
Ludwigia peploides (Kunth) P.H.Raven - Floating primrose-willow - is native to wetlands of North, Central, and South America, and widely distributed across Africa, Australia, and Asia, and in Europe, where it is listed by EU Regulation no. 2016/1141 as an Invasive Alien Species (IAS) of Union concern. A photograph of the species from Romania taken in the Sai River Valley (Teleorman County) was published on the Facebook online platform in 2018. This first record, however, lacked further details on the observed specimen or any accompanying herbarium material that would ascertain its correct taxonomic assignation. By carrying out our own field surveys between October and November 2020 we hereby confirm the presence of the species Ludwigia peploides as a new addition to the Romanian alien flora. We identified many specimens occurring along the Sai River Valley, between Olteanca and Turnu Magurele localities. We further present preliminary data regarding the distribution, affected habitats, and population extent of Ludwigia peploides in the investigated area. Although several hypotheses can be proposed on the origin of this species in Romania, our current data cannot strongly support any of them. Plant specimens were deposited in the Herbarium collection of the D. Brandza Botanic Garden of the University of Bucharest (BUC).
渡鸦——漂浮的樱草柳——原产于北美洲、中美洲和南美洲的湿地，广泛分布于非洲、澳大利亚和亚洲，以及欧洲。2016/1141作为欧盟关注的外来入侵物种(IAS)。2018年，Facebook在线平台上发布了一张在罗马尼亚西河谷(泰奥曼县)拍摄的该物种的照片。然而，这第一个记录缺乏观察标本的进一步细节或任何随附的植物标本室材料，以确定其正确的分类定位。通过在2020年10月至11月期间进行我们自己的实地调查，我们在此确认该物种的存在，该物种是罗马尼亚外来植物群的新成员。我们在Olteanca和Turnu Magurele地区之间的Sai河流域发现了许多标本。本文还对调查区人路德维希蝇的分布、受影响生境和种群范围进行了初步分析。虽然可以提出几种关于该物种在罗马尼亚起源的假设，但我们目前的数据不能有力地支持其中任何一种。植物标本存放在布加勒斯特大学(BUC) D. Brandza植物园的植物标本馆。
{"title":"FIRST ASCERTAINABLE RECORD OF LUDWIGIA PEPLOIDES FROM ROMANIA","authors":"I. Sîrbu, P. Anastasiu, Mihaela Urziceanu, T. Șesan","doi":"10.24193/contrib.bot.56.2","DOIUrl":"https://doi.org/10.24193/contrib.bot.56.2","url":null,"abstract":"Ludwigia peploides (Kunth) P.H.Raven - Floating primrose-willow - is native to wetlands of North, Central, and South America, and widely distributed across Africa, Australia, and Asia, and in Europe, where it is listed by EU Regulation no. 2016/1141 as an Invasive Alien Species (IAS) of Union concern. A photograph of the species from Romania taken in the Sai River Valley (Teleorman County) was published on the Facebook online platform in 2018. This first record, however, lacked further details on the observed specimen or any accompanying herbarium material that would ascertain its correct taxonomic assignation. By carrying out our own field surveys between October and November 2020 we hereby confirm the presence of the species Ludwigia peploides as a new addition to the Romanian alien flora. We identified many specimens occurring along the Sai River Valley, between Olteanca and Turnu Magurele localities. We further present preliminary data regarding the distribution, affected habitats, and population extent of Ludwigia peploides in the investigated area. Although several hypotheses can be proposed on the origin of this species in Romania, our current data cannot strongly support any of them. Plant specimens were deposited in the Herbarium collection of the D. Brandza Botanic Garden of the University of Bucharest (BUC).","PeriodicalId":37521,"journal":{"name":"Contributii Botanice","volume":"38 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2021-11-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"69191502","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 : 2021-11-19DOI: 10.24193/contrib.bot.56.7
Z. Mamchur, Y. Drach, Marina Ragulina, S. Prytula, H. Antonyak
The article presents data on the diversity and substrate groups of bryoflora of the Znesinnya Regional Landscape Park (Znesinnya RLP), located in the city of Lviv (Western Ukraine). Based on field research carried out in the period 2015-2018 and analysis of herbarium collections, an inventory was made of the bryoflora of the Znesinnya RLP. A total of 113 species of bryoflora belonging to 66 genera, 35 families and 2 divisions are presented from the investigated area. Of these, 105 species are members of the division Bryophyta and 8 belong to Marchantiophyta. Six regionally rare species of bryophytes have been recorded, namely Pellia endiviifolia, P. epiphylla, Encalypta streptocarpa, Fissidens exilis, Cirriphyllum crassinervium and Sciurohypnum starkei. With regard to substrate preferences, epigeous species of bryophytes predominated and accounted for 89.0% of the total number of species. The largest proportion of bryophytes occurred on bare soil (46.0%), while 36.3% and 25.7% species were found on soil among herbaceous vegetation and on soil with gravel, respectively. Stony substrates were colonized by 42.5% of bryophyte species, with 19.5% of species occurring on artificial stony substrates. In addition, 24.8% of the species belonged to epixils inhabiting old stumps and logs of varying degrees of decay, and the same proportion was represented by epiphytic species of bryophytes. The smallest proportion (10.7%) of bryophytes was confined to water bodies and swampy ecotopes.
{"title":"SUBSTRATE GROUPS OF BRYOPHYTES IN THE TERRITORY OF THE ZNESINNYA REGIONAL LANDSCAPE PARK (LVIV, UKRAINE)","authors":"Z. Mamchur, Y. Drach, Marina Ragulina, S. Prytula, H. Antonyak","doi":"10.24193/contrib.bot.56.7","DOIUrl":"https://doi.org/10.24193/contrib.bot.56.7","url":null,"abstract":"The article presents data on the diversity and substrate groups of bryoflora of the Znesinnya Regional Landscape Park (Znesinnya RLP), located in the city of Lviv (Western Ukraine). Based on field research carried out in the period 2015-2018 and analysis of herbarium collections, an inventory was made of the bryoflora of the Znesinnya RLP. A total of 113 species of bryoflora belonging to 66 genera, 35 families and 2 divisions are presented from the investigated area. Of these, 105 species are members of the division Bryophyta and 8 belong to Marchantiophyta. Six regionally rare species of bryophytes have been recorded, namely Pellia endiviifolia, P. epiphylla, Encalypta streptocarpa, Fissidens exilis, Cirriphyllum crassinervium and Sciurohypnum starkei. With regard to substrate preferences, epigeous species of bryophytes predominated and accounted for 89.0% of the total number of species. The largest proportion of bryophytes occurred on bare soil (46.0%), while 36.3% and 25.7% species were found on soil among herbaceous vegetation and on soil with gravel, respectively. Stony substrates were colonized by 42.5% of bryophyte species, with 19.5% of species occurring on artificial stony substrates. In addition, 24.8% of the species belonged to epixils inhabiting old stumps and logs of varying degrees of decay, and the same proportion was represented by epiphytic species of bryophytes. The smallest proportion (10.7%) of bryophytes was confined to water bodies and swampy ecotopes.","PeriodicalId":37521,"journal":{"name":"Contributii Botanice","volume":"5 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2021-11-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"69191353","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: 10.24193/CONTRIB.BOT.55.4
Mihaela Urziceanu, Petronela Camen-Comănescu, E. Nagodă, Maria Raicu, I. Sîrbu, P. Anastasiu
"The first list of non-native ornamental plants (nNOP) reported as escaped, aturalised or invasive in Romania was published 15 years ago. Since then, new additions to the non-native ornamental flora of Romania ave been reported, while others plants have changed their status. As ornamental horticulture is one of the most important pathways for non-native plant introduction worldwide, we evaluated nNOP at the national level and updated the previous list in order to contribute to the development of tools for preventing, detecting, monitoring and managing the spread of nNOP. The updated list includes 264 taxa. Most of these are casual (199 taxa), 37 taxa are naturalised, and 28 taxa are invasive. In addition, the following characteristics were analysed: family, native range, life form, abundance in the country reported as number of localities and temporal trends. Non-native ornamental flora of Romania is dominated by American and Asian taxa, phanerophytes, hemicryptophytes and therophytes. The most widespread species is Robinia pseudoacacia, used not only for ornamental purposes, but also for its economic value. Many taxa (108 taxa) occur only in two to ten localities. 78 nNOP have been reported in the last 20 years. Six taxa are species of European Union concern (Ailanthus altissima, Asclepias syriaca, Cabomba caroliniana, Humulopsis scandens, Impatiens glandulifera, Myriophyllum aquaticum) and require special measures to control and mitigate their populations."
{"title":"UPDATED LIST OF NON-NATIVE ORNAMENTAL PLANTS IN ROMANIA","authors":"Mihaela Urziceanu, Petronela Camen-Comănescu, E. Nagodă, Maria Raicu, I. Sîrbu, P. Anastasiu","doi":"10.24193/CONTRIB.BOT.55.4","DOIUrl":"https://doi.org/10.24193/CONTRIB.BOT.55.4","url":null,"abstract":"\"The first list of non-native ornamental plants (nNOP) reported as escaped, aturalised or invasive in Romania was published 15 years ago. Since then, new additions to the non-native ornamental flora of Romania ave been reported, while others plants have changed their status. As ornamental horticulture is one of the most important pathways for non-native plant introduction worldwide, we evaluated nNOP at the national level and updated the previous list in order to contribute to the development of tools for preventing, detecting, monitoring and managing the spread of nNOP. The updated list includes 264 taxa. Most of these are casual (199 taxa), 37 taxa are naturalised, and 28 taxa are invasive. In addition, the following characteristics were analysed: family, native range, life form, abundance in the country reported as number of localities and temporal trends. Non-native ornamental flora of Romania is dominated by American and Asian taxa, phanerophytes, hemicryptophytes and therophytes. The most widespread species is Robinia pseudoacacia, used not only for ornamental purposes, but also for its economic value. Many taxa (108 taxa) occur only in two to ten localities. 78 nNOP have been reported in the last 20 years. Six taxa are species of European Union concern (Ailanthus altissima, Asclepias syriaca, Cabomba caroliniana, Humulopsis scandens, Impatiens glandulifera, Myriophyllum aquaticum) and require special measures to control and mitigate their populations.\"","PeriodicalId":37521,"journal":{"name":"Contributii Botanice","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2021-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"47772300","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: 10.24193/CONTRIB.BOT.55.7
S. Farcas, T. Ursu, V. Pop, I. Tanțău, A. Roman
The paper is a synthesis of the palynological studies that have addressed the age of landslides in Transylvania. We discuss the configuration of the paleo-vegetation in the respective areas, but also the probable factors, abiotic or biotic, which promoted the landslides and the relative period when they occurred in Transylvania. The analysis indicates two major periods of onset for landslides, the Pleistocene and Holocene.
{"title":"CONSIDERATIONS ON THE AGE OF THE “GLIMEE” IN TRANSYLVANIA","authors":"S. Farcas, T. Ursu, V. Pop, I. Tanțău, A. Roman","doi":"10.24193/CONTRIB.BOT.55.7","DOIUrl":"https://doi.org/10.24193/CONTRIB.BOT.55.7","url":null,"abstract":"The paper is a synthesis of the palynological studies that have addressed the age of landslides in Transylvania. We discuss the configuration of the paleo-vegetation in the respective areas, but also the probable factors, abiotic or biotic, which promoted the landslides and the relative period when they occurred in Transylvania. The analysis indicates two major periods of onset for landslides, the Pleistocene and Holocene.","PeriodicalId":37521,"journal":{"name":"Contributii Botanice","volume":"1 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2021-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"69190077","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: 10.24193/CONTRIB.BOT.55.9
C. Mogoșan, I. Oniga, M. Tămaș
We isolated the steroidal saponins from the rhizomes of Polygonatum odoratum (Mill.) Druce with an efficiency of 4.50% which represents 7 fractions identified by thin-layer chromatography (TLC), of which 3 were furostanics and 4 spirostanics. After the acid hydrolysis of the saponins, one aglycone (sapogenine) was identified by TLC. Further, we have determined the physico-chemical and the biological properties of the isolated saponins.
{"title":"ISOLATION AND ANALYSIS OF STEROIDAL SAPONINS FROM POLYGONATUM ODORATUM (MILL.) DRUCE","authors":"C. Mogoșan, I. Oniga, M. Tămaș","doi":"10.24193/CONTRIB.BOT.55.9","DOIUrl":"https://doi.org/10.24193/CONTRIB.BOT.55.9","url":null,"abstract":"We isolated the steroidal saponins from the rhizomes of Polygonatum odoratum (Mill.) Druce with an efficiency of 4.50% which represents 7 fractions identified by thin-layer chromatography (TLC), of which 3 were furostanics and 4 spirostanics. After the acid hydrolysis of the saponins, one aglycone (sapogenine) was identified by TLC. Further, we have determined the physico-chemical and the biological properties of the isolated saponins.","PeriodicalId":37521,"journal":{"name":"Contributii Botanice","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2021-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"48988286","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: 10.24193/CONTRIB.BOT.55.3
P. Szatmari, B. Hurdu
Dittrichia graveolens (L.) W. Greuter, an invasive plant species of Mediterranean origin, is recorded for the first time in Romania. We found the species in October 2020 in two separate locations along the main highway that connects Brașov and Sibiu cities, in Southern Transylvania, central Romania. We present here the first data concerning the species occurrence in the investigated area, its observed habitat, local distribution and accompanying species. We presume that the main vector for the introduction and dispersal of this species in Romania is the high traffic density along the major roads. Dittrichia graveolens has proven its invasive potential in other regions of Europe and North America of similar temperature and precipitation regimes under an overall temperate climate. Consequently, taking into account its fast dispersal, especially in the more favourable habitats for its establishment that exist along the major roads from the lower altitudes and the riparian communities from the western, southern and eastern parts of Romania, we conclude that close monitoring of the species occurrence should be undertaken in order to better assess its full invasive potential in our country and to reduce the risk of impact on natural plant communities.
{"title":"DITTRICHIA GRAVEOLENS (ASTERACEAE) – A NEW ALIEN PLANT SPECIES FOR ROMANIA","authors":"P. Szatmari, B. Hurdu","doi":"10.24193/CONTRIB.BOT.55.3","DOIUrl":"https://doi.org/10.24193/CONTRIB.BOT.55.3","url":null,"abstract":"Dittrichia graveolens (L.) W. Greuter, an invasive plant species of Mediterranean origin, is recorded for the first time in Romania. We found the species in October 2020 in two separate locations along the main highway that connects Brașov and Sibiu cities, in Southern Transylvania, central Romania. We present here the first data concerning the species occurrence in the investigated area, its observed habitat, local distribution and accompanying species. We presume that the main vector for the introduction and dispersal of this species in Romania is the high traffic density along the major roads. Dittrichia graveolens has proven its invasive potential in other regions of Europe and North America of similar temperature and precipitation regimes under an overall temperate climate. Consequently, taking into account its fast dispersal, especially in the more favourable habitats for its establishment that exist along the major roads from the lower altitudes and the riparian communities from the western, southern and eastern parts of Romania, we conclude that close monitoring of the species occurrence should be undertaken in order to better assess its full invasive potential in our country and to reduce the risk of impact on natural plant communities.","PeriodicalId":37521,"journal":{"name":"Contributii Botanice","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2021-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"49585968","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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