摘要
以水稻秀水11为材料,采用室内培养方法,研究了不同浓度镉对水稻种子萌发、幼苗生长和淀粉酶活性的影响。结果表明,镉对水稻种子萌发的影响较小,只有在高浓度镉胁迫下发芽率才受到明显影响。随着镉胁迫浓度的提高,发芽指数、活力指数、根长、淀粉酶活性明显降低。镉胁迫对水稻种子根生长的抑制作用大于芽,α-淀粉酶大于β-淀粉酶。
The effects of different cadmium concentrations on seed germination, seedling growth and amylolytic activity of rice cultivar Xiushui 11 （ Oryza sativa L. cv. Xiushui 11） were studied. The results showed that cadmium had little effect on germination rate except seeds were treated under high concentration of cadmium. However, germination index, vigour index, root length and amylolytic activity were significantly reduced with the increase of cadmium. The inhibition of cadmium on root growth was more obviously than that on plumula, and the inhibition on the activity of α-amylase was more seriously than that on β-amylase.
出处
《华北农学报》
CSCD
北大核心
2008年第B06期131-134,共4页
Acta Agriculturae Boreali-Sinica
基金
贵州省自然科学基金项目(20072058)
贵州大学人才基金项目(X060036)
关键词
镉
水稻
根伸长
萌发
淀粉酶
Cadmium
Rice
Germination
Root length
Amylase
