松散型花椰菜新品种京松2号的选育

A New Loose-curd Cauliflower Variety——‘Jingsong No.2'

京松2号是以细胞质雄性不育系CMS105为母本、自交系36B为父本配制而成的中晚熟松散型花椰菜一代杂种。华北地区秋露地从定植至收获90 d(天)左右,春露地从定植至收获70 d(天)左右。植株直立,生长势强,叶片厚,叶面蜡粉多,花球半松散、白色,青梗,单球质量1.5 kg以上。花球VC含量576 mg·kg^(-1)(FW),可溶性糖2.07%,粗纤维1.25%,蛋白质1.88%,钙362.4 mg·kg^(-1)(FW),铁11.25 mg·kg^(-1)(FW),同时还富含硫代葡萄糖苷,品质好,营养价值高。平均每667 m^2产量3 000 kg以上。适合北京、河北、河南、四川等地春、秋季露地栽培。

‘Jingsong No.2’is a new F1 hybrid of loose-curd cauliflower developed by crossing cytoplasmic male sterile line‘CMS105’as female parent and inbred line‘36B’as male parent.It is of mid-late maturity.It takes about 90 days from transplant to harvest in autumn at open fields,and about 70 days in spring at open fields of North China.The plant is up-right with strong growth vigor.Its leaf blade is thick.There are plenty of wax powder on its surface.The single head weight is over 1.5 kg.Its head is semi-loose in white color with green stalks.In its head,the contents of VC,soluble sugar,crude fibre,protein,calcium and iron are 576 mg·kg^-1(FW),2.07%,1.25%,1.88%,362.4 mg·kg^-1(FW),and 11.25 mg·kg^-1(FW),respectively.It is also rich in glucosinolate.It can yield over 45 t·hm-2.It is suitable for cultivation in open fields in spring and autumn in Beijing,Hebei,Henan and Sichuan Provinces,etc.