不同水分条件下几种藤本植物幼苗的生理生化响应

采用人工模拟水分胁迫的方法,研究了安顺缫丝花、黄褐毛忍冬、葛藤3种藤本植物在不同水分胁迫条件下的生理生化响应.结果表明:在不同的水分条件下,3种藤本幼苗的叶片水分饱和亏缺、相对含水量、超氧化物歧化酶(SOD)活性以及叶片质膜透性的变化趋势一致,表现为随着土壤相对含水量的降低,水分饱和亏缺和质膜透性升高、相对含水量降低、...

Physiological and Biochemical Responses of Three Lianes Seedlings Under Water Stress

The physiological and biochemical responses in seedlings of Rosa sterilis var.leioclada,Lonicera fulvotnetosa and Pueraria lobata were studied by experiments of simulating water stress.The results showed there existed a similar changing tendency of leaf water saturation and deficit,relative water content,SOD activation and membrane permeability of each Lianes seedlings.The leaf water saturation and deficit and membrane permeability raised as water stress level increasied while the relative water content decreased.The SOD activation raised first,declined then,and increased continually later.Chlorophyll content,soluble suger content and proline content of three Lianes seedlings got the highest value under the lowest soil relative water content.Variations of MDA content were different under different water levels.The variation level of indexes in three seedlings were different.The results of subordination function method of drought resistance for the three Lianes seedlings in water stress showed their resistance ability as follows：Lonicera fulvotnetosaRosa sterilis var.leiocladaPueraria lobata.