恢复系秧龄对高原滇型杂交粳稻制种产量相关因素的影响

摘要

比较研究了恢复系南34在3种不同秧龄时移栽对杂交粳稻滇杂35的制种产量及产量构成要素的影响.结果表明,恢复系南34秧龄42 d移栽的有效穗数明显高于45和52 d秧龄移栽,达到显著水平;恢复系不同秧龄移栽对母本穗实粒数、异交结实率及制种产量的影响达显著或极显著水平.恢复系南34适时提早移栽,缩短秧龄,有利于促进分蘖,提高成穗率,进而提高花粉供给量.%The yields of hybrid rice seed production and agronomic traits of the yield of Dian type (D) hybrid combination Dianza35 were analyzed through transplanting restorer Nan 34 at three different seedling age.The results showed that the effective panicles of Nan34 transplanted at 42-day were significantly higher than that at other two seedling ages,45 and 52 d.Seedling age of the restorer significantly or extremely and significantly affected the filled grains per panicle,outcrossing rate and hybrid seed yield of its female.The restorer transplanted at relatively short seedling age could improve its effective panicles,and then increase the number of pollen.