摘要
在营养生长阶段大豆正在扩展和刚刚完全扩展的叶片 (4～ 1 2天龄 )观察到外源赤霉素GA3引起净光合速率增高 ,但是在成龄叶片 (1 7～ 2 2天龄 )观察不到这种效应 (图 1 )。在扩展着的叶片 (4～ 8天龄 )中用免疫实验检测的内源赤霉素GA1 +3含量低于成龄叶片中的含量 (图 2 )。由这些结果得出结论
Increases in net photosynthetic rate (Pn) caused by exogenous GA 3 treatment were observed in expanding and just fully expanded leaves (4-12 days old), but not in mature leaves (17-22 days old) of soybean plant at vegetative stage (Fig.1). Endogenous GA 1+3 content detected by immunoassay was lower in expanding leaves (4-8 days old) than in mature leaves (Fig.2). It is concluded that the stimulatory effect of exogenous GA 3 on photosynthesis presupposes a low level of endogenous bioactive gibberellins in soybean leaves.
出处
《植物生理与分子生物学学报》
CAS
CSCD
2002年第4期317-320,共4页
Journal Of Plant Physiology and Molecular Biology
基金
国家重点基础研究发展规划项目 (No .G19980 10 10 0 )资助~~
关键词
酶联免疫实验
赤霉素
净光合速率
大豆
enzyme-linked immunosorbent assay (ELISA), gibberellins, net photosynthetic rate, soybean
