摘要
采用牛磺酸溶液培育黄瓜幼苗,牛磺酸浓度分别为10、100、500、1000、5000mg·L-1,测定牛磺酸对黄瓜幼苗生长指标和生理特性指标包括光合作用PSⅡ的光化学效率、细胞膜相对透性和膜脂过氧化的影响。结果表明,适量浓度的牛磺酸处理可明显促进黄瓜幼苗的生长、增强幼苗的素质和促进壮苗的形成,并在一定程度上提高黄瓜幼苗叶片的光化学效率,降低细胞膜相对透性和膜脂过氧化产物的含量,最适处理浓度约为500mg·L-1,说明牛磺酸对黄瓜幼苗细胞膜有一定的保护作用。
Cucumber (Cucumis sativus L.) seedlings were grown in taurine solution at concentrations of 10、100、500、1000 and up to 5000 mg·L-1, the growth indexes and the relative permeability of membrane、membrane lipid peroxidation product and photochemistry efficiency in cucumber seedlings were determined. The results show that taurine treatments distinctly promoted the growth of cucumber seedlings and high quality seedling forming of cucumber to a certain extent. In the tested group, growth indexes such as root length, plant height, root-dry weight and top-dry weight, index of high quality seedling and root-top ratio increase significantly as compared with that in the control. In addition, the photochemistry efficiency in the leaf was increased, and the membrane relative permeability and the content of membrane lipid peroxidation product MDA were decreased, with an optimum treatment concentration at about 500 mg·L-1. It suggests that taurine has protective effects on the cell membrane of cucumber seedlings to a higher level.
出处
《上海交通大学学报（农业科学版）》
2005年第1期10-14,共5页
Journal of Shanghai Jiaotong University(Agricultural Science)
基金
国家863计划资助项目(No.2002AA244031)
关键词
黄瓜幼苗
生理特性
生长
光化学效率
膜脂过氧化
壮苗
透性
牛磺酸
细胞膜
影响
taurine
cucumber seedling
growth-promoting
photochemistry efficiency
relative permeability of membrane
membrane lipid peroxidation
