Combining ability analysis of the main agronomic traits of soybean backbone parent Zhongdou 41
Backbone parent is the important germplasm materials in soybean breeding.Zhongdou 41(one of the target backbone parent)and 9 other cultivars were selected to make 30 crosses by incomplete diallel crossing design.Ten yields and quality related traits in F1 were evaluated to assess combining ability and genetic parameters.Results indicated that Zhongdou 41 had the highest general combination ability(GCA)effects for main agronomic traits except for protein content.Zhongdou 41 showed higher specific combining abilities(SCA).Three combina-tions(as Zhongdou 41×Zheng 196,Zhongdou 41×Xin silihuang,and Zhongdou 41×Zhonghuang 319)had high-er SCA for yield related traits among the 30 combinations.Genetic parameters analysis showed that 9 traits were dominated mainly by additive effect,including plant height,number of main stem nodes,number of effective branch-es,number of pods per plant,number of seeds per plant,100-seeds weight,yield per plant,protein content and oil content.However,bottom pod height was controlled by additive and non-additive effects.These results were expect-ed to provide a theoretical basis for efficient utilization of Zhongdou 41 in soybean breeding.
万方数据
维普
