摘要
比较研究了外源植物激素ABA(脱落酸 )与植物生长抑制剂MH(马来酰肼 )对水稻种子发芽的抑制作用 ,以期阐明ABA抑制水稻种子发芽的生理学作用与机制。研究结果表明 ,ABA与MH虽然都具有抑制水稻种子发芽的作用 ,但两者生理作用性质不同 ,ABA抑制水稻种子发芽是延缓种子发芽 ,而MH是降低种子活性 ,对种子发芽具遏制、伤害作用。MH处理使种子的呼吸作用与芽谷中内源激素GA1 下降 ,ABA处理水稻种子呼吸峰滞后并有所下降 ,但未见芽谷中内源GA1 明显下降。
The physiological effects of plant growth regulators ABA and MH on rice seed germination were studied in this paper. Both ABA and MH could effectively inhibit the seed germination. However the germination inhibiting effects of MH was a process of decreasing or injuring seed activity, whereas ABA action model was a germination retarding process. The respiration rate and GA 1 content in sprouting seeds were decreased by MH treatment. The respiration peak was lagged and decreased by ABA treatment, but there was no significant decrease for GA 1 content in ABA treated sprouting seeds.
出处
《作物学报》
CAS
CSCD
北大核心
2004年第12期1250-1253,共4页
Acta Agronomica Sinica
基金
国家"8 63"项目 (2 0 0 1AA2 460 61)
杭州市科技项目 (2 0 0 3 13 2B2 6)
浙江省重点项目 (2 0 0 4C 2 2 0 0 2 )。
关键词
水稻种子
发芽
脱落酸
马来酰肼
内源GA1
Rice seed
Germination
Abscisic acid
Maleic hydrazide
Endogenous GA 1
