报道了4个种鹅观草属(RoegneriaC.Koch)植物的核型,其核型公式如下:芒颖鹅观草(R.aristiglum isKeng et S.L.Chen),2n=4x=28=22m+6sm(2SAT);短颖鹅观草(R.breviglu-m isKeng),2n=4x=28=20m(2SAT)+8sm;红原鹅观草(R.hongyuanensisL.B.Cai...报道了4个种鹅观草属(RoegneriaC.Koch)植物的核型,其核型公式如下:芒颖鹅观草(R.aristiglum isKeng et S.L.Chen),2n=4x=28=22m+6sm(2SAT);短颖鹅观草(R.breviglu-m isKeng),2n=4x=28=20m(2SAT)+8sm;红原鹅观草(R.hongyuanensisL.B.Cai),2n=4x=28=22m+6sm(2SAT);山东鹅观草(R.shandongensis(B.Salomon)J.L.Yang,Y.H.Zhou etYen),2n=4x=28=24m(2SAT)+4sm。同时对染色体主要特征的演变规律进行了分析,揭示了鹅观草属4个种的相对进化程度以及宏观分类中2个组的系统发育关系,表明鹅观草属的半颖组在系统发育中派生了颖体短小的小颖组。展开更多
The study of the water status and activity of catalase in Chinese tea plants (Camellia sinensis (L.) O. Kuntze) and hazelnut (Corylus pontica C. Koch.). The indicators, which not only describe the physiological state ...The study of the water status and activity of catalase in Chinese tea plants (Camellia sinensis (L.) O. Kuntze) and hazelnut (Corylus pontica C. Koch.). The indicators, which not only describe the physiological state of plants in the stressful period, but also allow it to identify more adaptive varieties within a given area was determined. Analysis of catalase activity data in Chinese tea and hazelnut revealed the presence of similar patterns: there is a change in enzymatic activity in response to hydrothermal factors. It is established that the stable varieties Camellia sinensis (L.) O. Kuntze and Corylus pontica C. Koch. characterized by a more active catalase, which is of particular importance during droughts. The water regime parameters variance scale for Camellia sinensis was developed, which allows differentiating varieties into groups of varying degrees of stability. It is shown that all methods that are used to estimate stability of plant species to extreme environmental conditions are based on several basic principles connected with peculiarities of adaptation mechanisms. The result was a selection of diagnostic indicators proposed for assessing adaptability: the water content of the leaf tissue, water-holding capacity of leaves, and concentration of cellular juice sprouts and activity of catalase.展开更多
文摘The study of the water status and activity of catalase in Chinese tea plants (Camellia sinensis (L.) O. Kuntze) and hazelnut (Corylus pontica C. Koch.). The indicators, which not only describe the physiological state of plants in the stressful period, but also allow it to identify more adaptive varieties within a given area was determined. Analysis of catalase activity data in Chinese tea and hazelnut revealed the presence of similar patterns: there is a change in enzymatic activity in response to hydrothermal factors. It is established that the stable varieties Camellia sinensis (L.) O. Kuntze and Corylus pontica C. Koch. characterized by a more active catalase, which is of particular importance during droughts. The water regime parameters variance scale for Camellia sinensis was developed, which allows differentiating varieties into groups of varying degrees of stability. It is shown that all methods that are used to estimate stability of plant species to extreme environmental conditions are based on several basic principles connected with peculiarities of adaptation mechanisms. The result was a selection of diagnostic indicators proposed for assessing adaptability: the water content of the leaf tissue, water-holding capacity of leaves, and concentration of cellular juice sprouts and activity of catalase.
