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硝酸镧对香蕉幼苗两个抗寒生理指标的影响
Effect of La(NO3)3 on the POD activity and relative conductivity of leaves in banana seedlings under chilling condition
【摘要】 在人工气候箱中进行人工模拟寒潮对香蕉的冷害 ,研究硝酸镧对改善香蕉抗寒性的生理作用。结果表明 :香蕉幼苗叶面喷施 0 .2 5~ 0 .2 8mmol/L浓度硝酸镧后 ,可提高香蕉叶片过氧化物酶的活性 44.2 %~61 .5 %及降低相对电导率 1 7.6%~ 2 7.7%。
【Abstract】 After the plantlet of banana( Musa cavendishii AAA group)suffered from low temperature stress which caused by the artificial lowering of temperature in the phytotron, we studied the effect of La(NO 3) 3 on the plantlet of banana.The results suggested that peroxidase(POD)activity of leaves could increase by 44 2%~61 5% and the relative conductivity of leaves could reduce to 17 6%~27 7% while spraying 0 25~0 28 mmol/L La(NO 3) 3 on the plantlet leaves.
【关键词】 抗寒性;
硝酸镧;
过氧化物酶;
相对电导率;
【Key words】 chilling resistance; La(NO 3) 3; POD; relative conductivity;
【Key words】 chilling resistance; La(NO 3) 3; POD; relative conductivity;
【基金】 广州市教委重点项目 (1999)资助
- 【文献出处】 广西植物 ,Guihaia , 编辑部邮箱 ,2002年03期
- 【分类号】Q945
- 【被引频次】46
- 【下载频次】295