耐寒黄苗不结球白菜青星2号的选育

Development of the New Chill-tolerant Non-heading Chinese Cabbage Hybrid Variety Qingxing No.2

以不育株率达100%、不育度大于95%、性状稳定一致、带有遗传标记的不结球白菜异源胞质雄性不育系黄苗寒青A为母本,以扬州大头矮为父本,选育出具有耐寒特性的不结球白菜杂交组合青星2号,其具有很强的杂种优势和抗寒性,产量为3306kg/667m2,目前已在全国推广种植。

Qingxing No.2 is a new chill-tolerance F1 hybrid developed by crossing non-heading Chinese cabbage Huangmiaohanqing A （Pol cms） as a female parent with Yangzhoudatouai as a male parent. Non-heading Chinese cabbage Huangmiaohanqing is a cytoplasmic male sterility with yellow mark in seedling, whose rate of male sterile plants is 100% and rate of male sterile is over 95%, The leaf color mark is yellow in seeding and the character is consistent. Qingxing No.2 has strong chilltolerance and heterosis character, The average yield can reach 49.59 t·hm^2.