不结球白菜抽薹性状的配合力及遗传效应研究

Combining Ability and Heritability Analysis of Bolting Character of Non-heading Chinese Cabbage

目前育种者对不结球白菜育种的研究主要集中在夏季及秋冬季弱冬性品种上,对适宜春季栽培的不结球白菜耐抽薹性的育种研究鲜有报道,然而市场对不结球白菜的周年生产要求迫切。本研究通过对不同抽薹期基因型的不结球白菜的配合力及遗传力进行分析,为不结球白菜耐抽薹时期的筛选及新品种的选育提供理论依据。本研究采用Griffing完全双列杂交方法 I对4个不结球白菜自交系抽薹性状的配合力进行分析,并对其抽薹性状的遗传参数进行估算。结果表明:自交系M11-1-2和M11-1-4的一般配合力均较好,具有作为耐抽薹亲本材料的潜力;抽薹期性状的广义遗传力和狭义遗传力分别为97.42%和91.41%,抽薹性状主要受加性效应基因控制,因此,在早世代对不结球白菜抽薹性状的选择是有效的途径。

Combining ability and heritability of bolting character of four non-heading Chinese cabbage inbred lines were analyzed using Griffing diallel cross I. The results showed that the general combining ability of inbred lines M11-1-2 and M11-1-4 were better, with as bohing-resistant potential parental material. The broad sense heritability and narrow sense heritability of bolting character were 97.42% and 91.41% respectively, and mainly affected by additive genes. So, the selection of bolting characters in non-heading Chinese cabbage was effective in early generations.