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铝对水稻幼苗生长和生理的影响
石贵玉
广西师范大学生命科学学院 广西桂林541004
摘要:
以不同浓度的铝处理水稻幼苗 ,研究铝对水稻幼苗的生理生化效应。结果表明 ,5 0 μmol·L 1的铝对水稻幼苗生长有促进作用 ,高于 5 0 μmol·L 1后 ,随着铝浓度的增加 ,植株生长明显受到抑制 ,株高、根长、鲜重和干重均下降 ;叶片叶绿素含量和SOD活性下降 ,POD活性先上升后下降 ,细胞膜透性增大。表明高浓度铝的毒害 ,导致体内保护酶活性受到抑制 ,膜系统受到伤害 ,从而影响水稻幼苗的生长。
关键词:  铝    杂交水稻    保护酶    生长
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