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植物生长物质HKL-4对甘草叶片活性氧代谢及PSⅡ光化学效率调控的研究
Effect of HKL-4 on active oxygen metabolism and photochemical efficiency in licorice leaf
【摘要】 目的:研究在大田条件下植物生长物质HKL-4系统调控对甘草叶片活性氧代谢及PSⅡ光化学效率影响。方法:以乌拉尔甘草为材料,定期测定HKL-4对甘草叶片的活性氧代谢及PSⅡ光化学效率的影响。结果与结论:HKL-4提高了叶片中叶绿素的含量、提高了超氧化物歧化酶(SOD)、过氧化氢酶(CAT)活性,降低了过氧化物酶(POD)活性和膜脂过氧化物产物丙二醛(MDA)的积累,改善了活性氧代谢,延缓了叶片的衰老,提高了叶片的光化学效率(Fv/Fm)。
【Abstract】 Objective: To study the effects of HKL-4 on physiological changes during growth of leaves.Method: Using licorice(Glycyrrhiza uralensis) as material,the effects of HKL-4 on active oxygen metabolism and photochemical efficiency in licorice leaf were determined under field condition.Result and Conclusion: The contents of chlorophyll,activity of SOD and CAT increased,while the MDA contents in leaves decreased.The senescence was delayed,so that the photochemical efficiency(F_v/F_m) was increasing comparing to the control.
【Key words】 licorice; leaf; active oxygen metabolism; photochemical efficiencies(F_v/F_m); plant growth substance;
- 【文献出处】 中国中药杂志 ,China Journal of Chinese Materia Medica , 编辑部邮箱 ,2006年20期
- 【分类号】S567.71
- 【被引频次】7
- 【下载频次】188