摘要
用不同浓度Ce(NH4)2(NO3)6对水稻种子浸种,探讨了外源Ce(NH4)2(NO3)6对种子萌发及幼苗生理特性的影响。结果表明,10-20mg·L-1Ce(NH4)2(NO3)6浸种24h,可增强水稻种子在萌发时的α-淀粉酶活性,提高种子活力及萌发率,根系活力增强,幼苗叶绿素含量提高,细胞膜相对透性及MDA含量降低。50-100mg·L-1的Ce(NH4)2(NO3)6浸种后,种子活力及幼苗根系活力下降,幼苗叶绿素含量降低,细胞膜相对透性及MDA含量增加。
The effects of Ce（NH4）2（N03）6 on seed germination and physiological characteristics of rice seedlings were investigated. After treatment with the 10～20 mg·L^-1 Ce（NH4）2（N03）6 for 24 h, the amylase activities in rice were enhanced during seed germination. At the same time, the seed vigor, germination percentage, chlorophyll content in seedlings and root activities were increased respectively, while membrane permeability and MDA contents in seedlings were obviously decreased. However, under the treatment of 50～100 mg·L^-1 Ce （NH4）2（N03）6, the vigor of rice seeds and the root activities of rice seedlings decreased remarkably, the chlorophyll content in rice seedlings was also reduced, while the membrane permeability and MDA contents were significantly increased.
出处
《农业环境科学学报》
CAS
CSCD
北大核心
2008年第2期442-446,共5页
Journal of Agro-Environment Science
基金
天津师大博士基金资助项目
