摘要
以不同季别生态型的６个籼稻和５个粳稻亲本进行不完全双列杂交，组配了３０个籼粳交Ｆ１。配合力分析结果表明，籼粳交Ｆ１的生育期表现主要取决于亲本（尤其是粳稻亲本）一般配合力的大小，受组合间特殊配合力的影响较小。亲本的一般配合力大小与亲本本身熟期迟早顺序基本一致，但有少数中籼比较特殊，如栓朝２号的早熟性配合力接近于最好的早熟早籼浙辐８０２，故有必要加强此类种质的筛选。由于籼粳杂交早稻选配时受亲本的限制相对较大，建议先突破籼粳杂交中、晚稻，同时积累优良的早熟种质，从而实现籼粳杂交早、中、晚稻的配套。
The combining abilityly anasis of incomplete diallel crosses(5× 6 ) of 6 japonica varieties and 6 indica varieties suggested: The order of g.c. a. value was basically consistent with that of number of days to heading in parents. The g. c. a. value of parents was even more important to influence the growth duration of indica-japonica F1 than the s. c. a. value of crosses. It appeared possible to develop early season indica-japonica hybrids by using indica and japonica materials with short growth duration. Part of mid-season indica materials had comparatively high g. c. a. value of early maturity and were probably useful for short growth duration indica-japonica bybrid breeding.
出处
《杂交水稻》
CSCD
北大核心
1990年第5期32-35,共4页
Hybrid Rice
关键词
水稻
籼粳交
后代生育期
遗传
Rice, Growth duration, Indica- ponica cross,combining.
