四倍体不结球白菜雄性不育系的选育

Breeding of 4x CMS Line of the Non-heading Chinese Cabbage

为给不结球白菜新品种的选育提供优良亲本,以秋水仙素诱导2n配子再与四倍体雄性不育系08P76杂交创制的四倍体不结球白菜雄性不育材料09PY(14株)为母本,四倍体09P70热小材料为父本进行成对测交,后进行连续回交选育出不育株率为100%、不育度大于95%、性状稳定一致的不育系暑1。该雄性不育系株高30.0cm,开展度29.8cm,叶片亮绿,叶柄白色,具有生长速度快,丰产、抗病、抗热等特性。

To provide excellent parent resource for breeding new non-heading Chinese cabbage cultivars,a test cross was made by the male parent 09P70Rexiao（2n=4x）and female parent of the sterile materials（09PY）of non-heading Chinese cabbage which was obtain by the sexual polyploidization.Then the Shu No.1,of which the sterile rate reached 100%,and their degree was over 95% and their character was stable,was selected by continues back-cross.The plant height was 30.0 cm,the level of unfold was 29.8 cm,the leaf was brilliant green,the petiole was white.It had some properties such as grow faster, high yield,disease-resistant,heat resistant,and so on.