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中国农学通报 ›› 2015, Vol. 31 ›› Issue (3): 234-238.doi: 10.11924/j.issn.1000-6850.2014-1797

所属专题: 玉米

• 生物技术科学 • 上一篇    下一篇

糯玉米籽粒体积双列杂交分析

陈坚剑1,吕桂华1,徐秀红2,卢华兵1,郭国锦1   

  1. (1浙江省东阳玉米研究所,浙江东阳 322100;2贵州大学农学院,贵阳 550025)
  • 收稿日期:2014-06-27 修回日期:2014-06-27 接受日期:2014-08-08 出版日期:2015-03-19 发布日期:2015-03-19
  • 通讯作者: 陈坚剑
  • 基金资助:
    基金项目:浙江省农业科学院重点实验室开放课题“10个糯玉米骨干自交系类群划分及杂种优势模式确定”(2013-03-018);浙江省公益性技术应用研究计划“特用型高直链淀粉玉米种质资源创新及遗传特性研究” (2014C32028)。

The Diallel Analysis of Kernel Volume of Waxy Corn

Chen Jianjian1, Lv Guihua1, Xu Xiuhong2, Lu Huabing1, Guo Guojin1   

  1. (1Dongyang Maize Research Institute of Zhejiang Province, Dongyang Zhejiang 322100;2Agricultural College, Guizhou University, Guiyang 550025)
  • Received:2014-06-27 Revised:2014-06-27 Accepted:2014-08-08 Online:2015-03-19 Published:2015-03-19

摘要: 为了解糯玉米自交系籽粒体积性状配合力表现及体积性状世代间遗传规律,指导大粒型杂交组合选配及自交系改良,通过选用生产上推广的杂交种亲本及本单位选育的自交系共10份,按完全双列杂交配制组合,随机区组种植于大田,籽粒完熟晒干对体积进行测定,用Griffing IV方法对数据进行处理,研究杂交组合间籽粒体积变化规律。结果表明:籽粒体积性状一般配合力效应在亲本间存在显著差异,S10一般配合力最好,S6一般配合力最低。特殊配合力效应在组合间差异显著。控制籽粒体积性状的基因狭义遗传力较低(hn2=12.55%),遗传效应中显性效应(VD=1.5398)大于加性效应(VA=0.7949)。试验表明:育种上针对籽粒体积性状选择,自交系应晚代选择为主,组合根据体积表现结合育种目标直接选择。

关键词: 收益, 收益

Abstract: In order to establish the combining ability performance of kernel volume of waxy corn lines and the inheritance of kernel volume among the generations, and guide large kernel hybrid combinations’ matching and inbred lines improvements, ten waxy corn lines, including the parents of commercial varieties and inbred lines bred by us, were used as materials in this study. By using complete diallel cross design, hybridized combinations were made and planted in the randomized block field. After maturity and drying, the kernel volume was measured and data was handled by using Griffing IV method to study the inheritance of kernel volume among hybrid combinations. The results showed that general combining ability (GCA) of kernel volume had a significant difference between parents, and the GCA of S10 was the best combination while the GCA of S6 was the lowest one. Specific combining ability (SCA) of kernel volume had a significant difference between the combinations. The heritability of kernel volume was low (hn2=12.55%), and dominant effect (VD=1.5398) was greater than additive effect (VA=0.7949) among genetic effects. Therefore, for selecting kernel volume traits in breeding process, inbred lines should be selected in later generations, and combinations should be directly selected by considering both kernel volume performance and breeding goals.