大白菜根肿病抗性与橘红心性状的遗传关系

Genetic Relationship between Chinese Cabbages in Anti-clubroot with Orange Head Traits

以育成的黄心抗根肿病直筒叠抱型大白菜CR9112A和CR9112B为母本,直筒舒心橘红心大白菜龙园红1号JH-1自交系为父本,分别完成F1、F2及BC1F1各世代。验证龙园红1号橘红心性状的遗传规律,探究根肿病抗性与橘红心性状之间的遗传关系。抗性和花色鉴定结果表明:根肿病抗性与橘红心性状之间无连锁关系,二者表现为独立遗传。龙园红1号JH-1的基因型为msmsrrhh。提出了转育抗根肿病橘红心大白菜的遗传模式,以期获得经济性状优良的抗根肿病橘红心材料。

Taking the existing anti-clubroot CR9112A and CR9112B lines of straight canister folded common Chinese cabbage〔Brassica campestris L.ssp.pekinensis（Lour）Olsson〕as female parent and stably inherited＇Longyuanhong No.1＇JH-1 inbred lines of Chinese cabbage with orange head as male parent,we prepared every generations of F1,F2 and BC1F1.The inheritance rule of＇Longyuanhong No.1＇ inbred lines was verified,and the relationship between clubroot resistance gene with orange head leaf gene was explored.The identification results showed that there was no linkage relationship between clubroot resistance and orange head characteristics,and these 2 were independently inherited.The gene type of ＇Longyuanhong No.1＇JH-1 was msmsrrhh.On this basis,the paper put forward a genetic model for transferring clubroot resistance to orange head traits,so as to obtain an excellent orange head Chinese cabbage resistant to clubroot.