赤霉素在杂交水稻制种上的作用与机理  

Effect and Mechanism of Gibberellic Acid(GA_3) on Hybrid Rice Seed Production

作　　者：皮勇华[1] 贺芳[2] 徐志文 钟荣 

机构地区：[1]江西省农业科学院水稻研究所,江西南昌330200 [2]江西省农业科学院旱作物研究所,江西南昌330200 [3]江西省林木种苗站,江西南昌330038 [4]江西省建设职业技术学院,江西南昌330038

出　　处：《江西农业学报》2007年第10期25-27,共3页Acta Agriculturae Jiangxi

摘　　要：通过田间试验研究了GA3在3个杂交水稻组合制种中的作用效果,结果表明:GA3对解除不育系包颈,调节植株高度,改善异交态势,提高柱头外露率,增强柱头活力,从而提高异交率和制种产量具有明显效果。同时从植物生理学角度阐述了GA3的作用机理。The effect of GA3 on hybrid rice seed production was studied through, field experiments. The result indicated that GA3 had marked effects in reducing enclosed panicles of CMS line, adjustment of plant height, improvement of out -crossing construction, increasing the percentage of exserted stigmas, enhancing stigma longevity, thus it could significantly increase the seed setting rate of out - crossing and seed yield. The mechanism of GA3 on plant physiology was analyzed.

关 键 词：GA3 杂交水稻制种 作用机理 效果 

分 类 号：S511.038[农业科学—作物学]