早熟大白菜新品种琴萌8号的选育

A New Chinese Cabbage F_1 Hybrid—‘Qinmeng No.8’

琴萌8号是由自交不亲和系93-2-2SI和93-7-5SI配制而成的早熟秋大白菜一代杂种。生育期65d(天)左右,株高34.9cm,开展度80.8cm;外叶绿色,叶柄白绿色,叶球叠抱,倒卵圆形,结球紧实,球叶浅黄绿色,球高23.5cm,横径19.1cm,单球质量3kg左右,净菜率70%以上;高抗病毒病、霜霉病、黑斑病和软腐病,耐贮运,商品性好,VC含量179.80mg.kg-1(FW),可溶性总糖2.42%(DW),粗蛋白24.34%(DW);每667m2净菜产量5500kg左右,适宜山东、河北、北京、黑龙江、陕西、天津、河南等地早秋栽培,累计种植面积达6300hm2。

Qinmeng No. 8 is a new F1 hybrid of autumn Chinese cabbage with early-maturity developed by crossing two self-bred line 93 -2 -2SI and 93 -7 -5SI. It can be harvested about 65 days after sowing,with green leaves,whitegreen petiole, and the leaf head is obovate, light yellow green color,23.5 cm in height, 19.1 cm in diameter,3 kg in weight. It is high resistant to virus, downy mildew, Ahernaria leaf spot and soft rot, and it has good storage ability. The content of VC is 179.80 mg·kg^-1 （FW） ,soluble sugar is 2.42 % （DW） ,protein is 24.34 % （DW）. Its net yield is 82.5 t·hm^-2. It is suitable to be cultivated in early autumn in Shandong, Hebei, Beijing, Heilongjiang, Shanxi, Tianjin, Henan, etc. It has been extended with total area of 6 300 hm^2.