彩色大白菜新品种“金冠2号”的选育

Breeding of a New Hybrid F1 of Orange-heading Chinese Cabbage-'Jinguan No.2'

在1996年育成彩色大白菜材料的基础上，应用优良自交系92S24等采用杂交、自交，育成了系列彩色大白菜自交系，2002年从20多个杂交组合中筛选“金冠2号”新品种（01S1024×01S915）。该品种叶球叠抱，高头球形，株高41cm，株幅65cm；球形指数1．4；外叶绿色，球叶外层2～3片叶为绿色，内层叶色为橙色，在阳光下叶色稍变红；单球净重2．5～3．0kg，净菜率为75％以上，结球紧实，营养丰富，商品性好；球叶类胡萝h素含量为优质普通大白菜秦白二号的3．47倍，vC、可溶性糖、粗蛋白分别提高44％、36％和18％，干物质提高11．73％，粗纤维减少26．0％。一般净菜产量为90．0t／hm^2左右，高抗病毒病、霜霉病、干烧心、软腐病和黑斑病，生育期75～80d。2004年通过陕西省新品种鉴定。

Jinguan No. 2 is a new F1 hybrid of orange heading Chinese cabbage suitable for autumn, combined by self-incompatible lines 01S1024 and 01S915, with green leaf, low of leaf margin undulation, mid-maturity,vigorous plant. Its leaf head is obovate, orange color. The average net weight per leafhead is 2.5～3.0 kg, with hard head, high nutrient, and attractive appearance. The content of carotenoid in head is 3.47 times as Qinbai No. 2, a normal Chinese cabbage, and vC, soluble sugar, crude protein, dry material is 44%, 36%, 18% and 11.73% higher than it respectively, and cellulose is 26. 0% lower than it. The ratio of net vegetable is over 75%. It is resistance to virus, downy mildew, tipburn and soft-rot. It can be harvested in 75～80 days after sowing and yielded net vegetable 90.0 t · hm^-2. It has been approved by Shaanxi Province Crop Approving Committee in 2004.