摘要
研究了亚精胺浸种对渗透胁迫下玉米(Zea mays L.)种子萌发和淀粉酶活性的影响。结果表明,与对照相比,在渗透胁迫下,玉米发芽势、发芽率和胚芽鞘长度均下降,且萌发过程中的淀粉酶活性下降,淀粉含量上升,可溶性糖、还原糖含量下降;用亚精胺(Spd)浸种处理后,抑制了玉米种子在渗透胁迫条件下其发芽势、发芽率、胚芽鞘长度、淀粉酶活性、可溶性糖和还原糖含量下降以及淀粉含量的上升。上述结果表明,Spd浸种处理通过提高渗透胁迫下玉米种子萌发过程中的淀粉酶的活性,促进淀粉的降解,从而促进渗透胁迫下玉米种子的萌发。
The effects of seed soaking with spermidine on seed germination and amylase activity of maize were investigated under osmotic stress. The results showed that the osmotic stress decreased the germination rate,germination energy,coleoptile length, amylase activity and the contents of reduced and soluble sugers, and increased the starch content, while seed soaking with spermidine could alleviate the inhibiting effects of osmotic stress. This suggested that Spd seedsoaking could facilitate maize seed germination by enhancing the amylase activity and promoting the starch hydrolysis in seed under osmotic stress.
出处
《河南农业科学》
CSCD
北大核心
2010年第5期8-10,共3页
Journal of Henan Agricultural Sciences
基金
国家自然科学基金(No.30771296)
河南省基础与前沿技术研究计划项目(082300430310)
河南省教育厅自然科学基础研究计划项目(2007180052)
关键词
亚精胺浸种
玉米
萌发
淀粉酶
Spermidine seed-soaking
Maize（Zea mays L. ）
Germination
Amylase
