摘要
用光壳粳稻中水１５与矮秆籼稻８５－１２１０、８０－６６、ＩＲ３６杂交,Ｆ＿１代的结实率分别为７８.７％、７３.６％、６８.５％；与粳稻品种秋光、有芒早沙粳、国庆２０杂交,Ｆ＿１代结实率分别为７９.９％、８３.７％、８０.２％。表明中水１５与矮秆籼稻杂交存在亚种间亲和性,但Ｆ＿１代结实率有很大的变化,亲和性有选择性；杂种优势明显,并与某些性状存在一定的关联性,产量优势度主要受单株穗数和单株谷重的影响。
The spikelet fertility of F1 was 78.7%,73.6%and 68.5%respectively,in the cross combinationsbetween Javanica Zhongshui 15 and Indica varieties,85-1210,80-66 and IR36.The spikelet fertility of F1was 79.9%, 83.7%and 80.2%respectively when crossed with Javanica varieties Qiuguang,Youmang Za-oshajing and Guoqing 20.It indicated that there existed the cross compatibility between subspecies Javanicaand Indica varieties,but its spikelet fertility of F1 showed more difference,and the compatibility had selectivi-ty.The heterosis of F1 Was significant and existed certain correlation with some characteristics.Its yield domi-nance was mainly effected by the spike number and grain weight per plant.
出处
《贵州农业科学》
CAS
1996年第5期7-10,共4页
Guizhou Agricultural Sciences
关键词
粳稻
籼稻
亲和性
杂种优势
Javanica
Indica
compatibility
heterosis
