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杂合现象

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The results were as follows: Firstly, the S-locus of Katy was heterozygous, and self-compatibility was dominant to self-incompatibility. Secondly, a very extensive segregation in self-pollinated fruiting rate, fertile flower rate and average fruit weight was observed in the F1 populations, and averages of these traits were lower than that of mid-parent means. Therefore, these traits were confirmed to be quantitative.

结果表明,(1)凯特杏的S基因位点为杂合型,自交亲和对自交不亲和为显性遗传;(2)3个杂交组合的自交坐果率、有效花比率及平均单果重等性状在F1中广泛分离,杂种群体的平均值低于亲中值,表现明显的衰退现象,表明这3个性状均为数量性状。

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