摘要
[目的]通过对6个籼型两系不育系的配合力及遗传率分析,探讨其育种利用情况。[方法]以6个籼型不育系与6个恢复系为材料,采用不完全双列杂交(NCⅡ)设计,配制36个F1,对8个农艺性状进行配合力及遗传率分析。[结果]不育系的各性状一般配合力方差均达显著或极显著水平,这6个不育系对所配组合的株高、单株谷重等8个性状的影响均有明显差异;WA918S是一个较理想的不育系,新二S可利用其一般配合力,广茉S、1892S可利用特殊配合力,从而选育出强优势组合。[结论]该研究为合理利用这些不育系提供理论支持。
[ Objective] To discuss the breeding value of 6 two-line indica sterile lines through analyzing combining ability and heritability. [ Method ] 36 F1, originated from 6 sterile lines and 6 restorer lines with incomplete diallel design （NC Ⅱ ） , were used to analyze the combining ability and heritability of 8 agronomic traits. [ Result] There were significant difference among the 6 sterile lines in all traits because general combining ability（GCA） variance reached significant difference at 5% or 1% level. WA918S was an ideal sterile line to breed high-yield combinations. On the other hand, utilization of higher GCA such as Xiner S or higher special combining ability（SCA） as Guangmo S and 1892S could also obtain high-yield combinations. [ Conclusion] The results provide theoretical support effectively for utihzing these sterile lines.
作者
吴爽
李晓兵
杜士云
江建华
王辉
王德正
WU Shnang LI Xiao-bing DU Shi-yun WANG De-zheng et al(Rice Research Institute, Anhui Academy of Agricultural Sciences, Hefei,Anhui 230031 Agricultural Technology Extending Station in Hengbu Town of Zongyang County, Zongyang, Anhui 246701)
出处
《安徽农业科学》
CAS
2017年第6期22-23,64,共3页
Journal of Anhui Agricultural Sciences
基金
安徽省农业科学院学科建设项目(15A0106)
杂交水稻国家重点实验室开放课题(2015KF02)
关键词
水稻
两系不育系
配合力
遗传率
Rice
Two-line sterile line
Combining ability
Heritability
