甜菜近交系配合力与杂种优势表现分析

Analysis on the Combine Ability of Inbred Line and Heterotic Expression

采用不完全双列杂交试验法，通过对６组资料７１个亲本１８３个组合分析了甜菜近交系两种配合力在Ｆ＿１的表现。结果表明，甜菜杂交种一般配合力对Ｆ＿１产质量的相关性比特殊配合力更密切，即一般配合力对Ｆ＿１产质量的贡献大于特殊配合力。在优产质量组合部分表现得更加明显，配合力的结合类型也是选择的适宜指标。理想的一般配合力结合模式应为：高×高或高×中类型．

This test conductcd with incomplete diallel crosses method,and andlysis on the combineability of inbred line and hctero tic exprcasion of F_1 with 183 combinations in 71 parentswhich dividcd into 6 groups,the results have shown that GCA of the yield and quality of F_1in corrclation were more close than SCA, and it was more signiricant in the fine yield andquality combinations,the optimum targets for selecttion is the combined type of combine abili-ty,the perfect model of GCA is: High×high or High×middle.