水分亏缺对苹果幼树日光合效率的影响  

The Effects of Water Deficits on Photosynthetic Efficiency of Young Apple Tree Leaves on a Sunny Day

作　　者：赵明德 王有年[2] 谷继成[2] 

机构地区：[1]北京市清河农场,天津300481 [2]北京农学院植物科学技术系,北京102206

出　　处：《北京农学院学报》2004年第3期35-37,共3页Journal of Beijing University of Agriculture

基　　金：北京市自然科学基金资助;北京市农业应用新技术重点实验室资助

摘　　要：土壤水分供应充足的晴天,苹果幼树叶片水分亏缺影响净光合效率(PN)。而且当PN处于低谷期时,同水分亏缺有关的超氧物歧化酶(SOD)和谷光甘肽过氧化氢酶(GSH PX)活性达到一天的顶峰。Leaf water deficits influents net photosynthesis efficiency (PN) of the apple leaves on a sunny day when there is enough water in soil. Furthermore, during the low PN the activity of both superoxide dismutase(SOD) and glutathione peroxidase(GSH-PX) reach the climax of the whole day.

关 键 词：水分亏缺 苹果 幼树 光合效率 超氧物歧化酶 谷光甘肽过氧化氢酶 

分 类 号：S661.101[农业科学—果树学]