Analysis of Combining Ability of Starch Content in Hybrid Sorghum Based on AMMI Model

[Objective] Analysis of combining ability of starch content variation in hybrid sorghum with the assistant of AMMI model. [Method] Based on the analyses of GCA using incomplete diallel cross(NCII), the SCA of hybrid sorghum was analyzed by AMMI model. [Result] For the starch content change of F1 hybrid sorghum, the effects of GCA and SCA accounted for 81.06% and 17.97%, respectively. In the present study, CMS lines 45A, 29A and restorer lines Hui 1, 44R were proved to be the excellent parent materials for preparing high starch hybrid sorghum cultivars. [Conclusion] The improvement of starch content in parents should be mainly concerned in breeding high starch content hybrid sorghum.

基于AMMI模型的杂交高粱籽粒淀粉含量的配合力分析

[目的]应用AMMI模型分析杂交高粱籽粒淀粉含量变化中配合力的影响。[方法]用4个不育系和3个恢复系,采用不完全双列杂交(NCII)设计,在分析其一般配合力的基础上,用AMMI模型对杂交高粱的特殊配合力进行分析。[结果]杂交高粱F1代籽粒淀粉含量的变化,亲本的一般配合力影响占81.06%,亲本特殊配合力的影响占17.97%;该研究供试品种中,不育系45A、29A与恢复系恢1、44R是配制高淀粉杂交种的优良亲本材料。[结论]选育高淀粉含量的杂交高粱品种应以提高亲本的淀粉含量为主。