棉花“洞A”型核雄性不育性完全保持的遗传,受隐性不育主基因和“散粉”多基因系统共同控制。当存在显性可育主基因时,多基因系统的作用被掩盖,不育性表现为一对隐性基因的简单遗传。但当主基因呈纯合隐性不育态时,多基因系统则对不育性起修饰作用,导致不育株表现部分散粉可育。“散粉”多基因效应中,加性效应[d]、显性效应[h]及加性×显性的互作效应[j]均极显著,其中[d],[j]对散粉起增效作用,[h]则起减效作用。这种模式被称为作物核不育主基因,多基因互作模式。 The genetic inheritance of cotton “hole A” type of nuclear male sterility is completely controlled by the recessive male sterile major gene and the “loose powder” polygenic system. In the presence of a dominant-dominant dominant gene, the role of the polygenic system is masked and the infertility manifests as a simple inheritance of a pair of recessive genes. However, when the major gene was in a homozygous recessive state, the polygenic system played a modification role in infertility, resulting in the sterile powder partially fertile. Among the “loose powder” polygenes, additive effect [d], dominant effect [h] and additive × dominant interaction effect [j] are extremely significant, among which [d], [j] Effect, [h] play a role in the reduction. This model is known as the main nuclear infertility gene, multi-gene interaction model.