杉木雄性不育性遗传机理初步分析

Preliminary Inheritance Analysis to Male Sterility of chinese Fir,

对杉木雄性不育原株混合授粉子代的开花情况作了观测与分析，初步认为杉木雄性不育性属核质基因作用型，即雄性不育株的细胞核有５对控制育性的隐性纯合基因，细胞质有一种控制不育性的基因，构成雄性不育基因型──Ｓ（ｍｓ＿１ｍｓ＿１ｍｓ＿２ｍｓ＿２ｍｓ＿３ｍｓ＿３ｍｓ＿４ｍｓ＿４ｍｓ＿５ｍｓ＿５）。

On the basis of investigating and analysing the F_1 flowering con-ditions of male sterility original plant , the aut hors preliminarily proved that the male sterility of Cunninghamia lanceolata belongs to the type of nucleo-cytoplasmic interaction,that is,the genotype S(ms_1 ms_1 ms_2 ms_2 ms_3 ms_3 ms_4 ms_4 ms_5 ms_5)of male sterile plant is constitured by five couples of pure gene controled fertility in cell nucleus and by a kind of gene controled sterility in cytoplasm.