渍水对小麦扬麦5号旗叶和根系衰老的影响  

Effect of waterlogging on senescence of flag leaf and root of wheat Yangmai 5.

作　　者：姜东[1] 陶勤南[2] 张国平[2] 

机构地区：[1]南京农业大学农业部作物生长调控重点开放实验室,南京210095 [2]浙江大学,杭州310029

出　　处：《应用生态学报》2002年第11期1519-1521,共3页Chinese Journal of Applied Ecology

基　　金：国家自然科学基金资助项目 (3 0 170 5 44 )

摘　　要：In the pot culture experiment, winter wheat ( Triticum aestivum L.) c.v. Yanmai 5 was selected to study the effect of long term water logging, which was conducted from jointing stage to 20 days after anthesis, on grain weight and membrane lipid peroxidation,and on enzyme activities involving membrane lipid peroxide elimination of wheat leaf and root. The content of MDA (malondialdehyde), the product of membrane lipid peroxidation in flag leaf and root under waterlogging increased significantly, while the activities of SOD (super oxide dismutase) and CAT (catalase), two key enzymes involving in membrane lipid peroxide elimination decreased severely. Thereafter, the wheat flag leaf and root under waterlogging senesced much earlier than those under control. Therefore, the grain filling rate of wheat grown under water logging condition decreased significantly, and subsequently, its grain weight decreased obviously.In the pot culture experiment, winter wheat ( Triticum aestivum L.) c.v. Yanmai 5 was selected to study the effect of long term water logging, which was conducted from jointing stage to 20 days after anthesis, on grain weight and membrane lipid peroxidation,and on enzyme activities involving membrane lipid peroxide elimination of wheat leaf and root. The content of MDA (malondialdehyde), the product of membrane lipid peroxidation in flag leaf and root under waterlogging increased significantly, while the activities of SOD (super oxide dismutase) and CAT (catalase), two key enzymes involving in membrane lipid peroxide elimination decreased severely. Thereafter, the wheat flag leaf and root under waterlogging senesced much earlier than those under control. Therefore, the grain filling rate of wheat grown under water logging condition decreased significantly, and subsequently, its grain weight decreased obviously.

关 键 词：渍水 小麦 扬麦5号 旗叶 根系衰老 叶片衰老 

分 类 号：S512.1[农业科学—作物学]