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水杨酸对水分胁迫下菜豆若干生理指标的影响

Xin SUN,Yun-mei GUO,Tao LEI,Qi-lin DAI,Hong FENG,Hui-guo DUAN,Hou-Guo LIANG,Hong-hui LIN

JOURNAL OF SICHUAN UNIVERSITY (NATURAL SCIENCE EDITION)（2005）

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Abstract
考察了外源水杨酸处理对水分胁迫下菜豆幼苗叶片的含水量、光合色素含量、电解质外渗率及SOD、POD、CAT活性和根的电解质外渗率及SOD、POD、CAT活性的影响.结果表明:外源水杨酸能减缓水分胁迫下菜豆幼苗叶片含水量和光合色素含量的下降,保持叶片的SOD、CAT和根的SOD、POD、CAT活性,但却增加了叶片和根的电解质外渗率,降低了叶片POD的活性.由此看出,水杨酸可以在一定程度上够缓解水分胁迫对菜豆幼苗造成的伤害.
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Key words
salicylic acid,kidney bean,water stress,several physiological indexes
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