喷施“九二○”对广优772制种母本性状及产量的影响

Effect of Spraying Gibberellinon the Agronomic Traits of the Female Parent and Yield of Hybrid Rice Guangyou 772

广优772是福建禾丰种业有限公司、福建省农业科学院水稻研究所、三明市农业科学院利用广抗13A与福恢772配组育成的三系中籼杂交水稻品种,2015年通过福建省农作物品种审定。通过设置“九二○”在不同抽穗时期喷施不同施用量的试验,研究“九二○”对广优772制种母本株高、穗颈、包颈粒率、结实率和制种产量的影响,结果表明广优772获得制种较高产量的“九二○”喷施最佳时期为母本抽穗15%~20%,喷施量为300~375 g/hm^(2)。

A new three-line and mid-season indica type hybrid rice combination Guangyou 772 was bred from the sterile line Guangkang 13A and the restoring line Fuhui 772 by Fujan Hefeng Seed Industry Co.,Ltd,Rice Research Institute,Fujian Academy of Agricultural Sciences and Sanming Academy of Agricultural Sciences.In 2015,it was registered and released by the Crop Cultivar Registration Committee of Fujian Province.The effects of gibberellin on plant height,panicle neck,kernel rate,seed setting rate and seed production yield of female parent of Guangyou 772 were studied by spraying gibberellin at different heading stages and different application rates.The results showed that the best spraying time of gibberellin was 15%~20%of female parent heading,and the spraying rate was 300~375 g/hm^(2).