摘要
花生品种‘汕油523’种子用10-3mol·L-1脱落酸(ABA)浸泡12h后,种子发芽显著受抑制,胚α-淀粉酶活性降低,内源ABA水平提高。5mmol·L-1 ABA合成抑制剂钨酸钠处理的种子发芽率和活力指数提高,胚根增长,α-淀粉酶活性提高,内源ABA含量降低。据此认为ABA对种子萌发的抑制作用可能与α-淀粉酶活性和ABA含量有关。
The physiological effect of exogenous abscisic acid （ABA） on seed germination of peanut was studied. The results showed that 10^-3 mol·L^-1 ABA effectively inhibited the seed germination, obviously decreased α-amlyse activity and increased the content of endogenous ABA. Application of 5 mmol·L^-1 sodium tungstate, an ABA synthesis inhibitor, could effectively improve seed germination, seed vigor and promoted radicle growth. Meanwhile, sodium tungstate treatment could effectively enhance α-amylase activity and decrease the content of endogenous ABA. Activity of α-amylase and the content of endogenous ABA in peanut seeds were involved in the inhibition mechanism of ABA.
出处
《植物生理学通讯》
CAS
CSCD
北大核心
2008年第5期936-938,共3页
Plant Physiology Communications
基金
广东省自然科学基金(8151063101000011)
广东省教育厅自然科学重点项目(C10033)
关键词
花生
脱落酸
钨酸钠
种子发芽
Α-淀粉酶
peanut
abscisic acid （ABA）
sodium tungstate
seed germination
α-amylase
