【摘要】 在田间自然虫源条件下，大豆对食叶性害虫综合抗性的遗传表现为一对主基因＋ 多基因的遗传模式，抗性表现为显性。Ｆ２ 群体与Ｆ２：３ 家系抗虫性分离相当明显，根据Ｆ２·３ 家系估计的主基因遗传率比根据Ｆ２ 群体估计的主基因遗传率要高，分别是６５．３８％ 和４８．１９％ 。对Ｆ２ 个体和Ｆ２·３ 家系的主基因基因型分类作了估计。更多还原

【Abstract】 The inheritance of resistance of soybeans to the natural population of leaf-feeding insects was studied in the field. One major gene plus polygene mixed inheritance model was detected. The heritability estimated from F 2:3 families (65.38%) was greater than that from F 2 population (48.18%),and resistance was dominant. The major gene genotype of individual F 2 and F 2:3 was classified into according to their posterior probability.更多还原