摘要： 本试验表明,A₁型雄性不育性是由细胞质不育基因S₁与核内两对隐性不育基因ms₁ms₁ ms₂ms₂共同控制.A₂型雄性不育性是由细胞质不育基因S₂与核内一对隐性不育基因ms₂ms₂共同控制.相对的显性恢复基因MS₁MS₁ MS₂MS₂是独立遗传的,不存在累加效应,两对显性基因都与S₁存在互作关系,只要有其中一对就可实现对A₁细胞质不育系的恢复.A₂细胞质雄性不育系则只有MS₂MS₂基因才能恢复.MS₁MS₁基因在A₂细胞质遗传背景下失去了显性恢复作用,成为S₂的非互作基因.雄性不育的核质互作具有普遍性和对应性,保持系则具有多样性.

关键词: 高粱, A1、A2型, 育性遗传

Abstract: The present experiment shows that A₁ type male sterility is mutually-controlled by cytoplasmic sterile gene’S₁ and 2 pairs of nuclear recessive sterile genes ms,ms，and ms}msz，and A₁ type male sterility is mutually controlled by cytoplasmic sterile gene S₂and a Pair of nuclear recessive gene ms₁ms₁.The corresponding dominant restoring genes MS₁MS₁ and MS₂MS₂ can be inherited independently，without additive effect, Both pairs of dominant genes exercise interaction with S,，either pair can restore A₂ type cytoplasmic sterile line, But only MSZMS:gene can restore A₂type.cytoplasmic male sterile line, MS,NIS, gene in the background of A₂ types cytoplasmic inheritance has lost the dominant restoring function and become S₂'s non-interaction gene, The male sterile lines cytoplasmic-nuclear interaction is universal，and has correspondency，while the maintainer line has diversity。

Key words: Sorghum, A₂, A₂ type, Fertility inheritance