晚熟大白菜新品种京秋4号的选育

A Late Maturing New Chinese Cabbage F_1 Hybrid —‘ Jingqiu No. 4 ’

京秋4号是利用多材料复合杂交创新种质技术育成的晚熟大白菜一代杂种。生长期75～80d(天),整齐度高,外叶深绿色,叶面稍皱,开展度较小,叶球中桩叠抱,球叶充实速度快,紧实,单球净质量4.2kg左右。口感佳,品质优,抗病毒病、霜霉病和黑腐病,耐贮运。一般产量7000kg·(667m2)-1左右,适应性广,适于北京、河北、天津、辽宁、吉林、黑龙江、内蒙古、山东等地种植,累计推广面积已达2万hm2。

‘Jingqiu No. 4’is a late maturing Chinese cabbage F1 hybrid with high quality.It can be harvested in 75-80 days after sowing.It has high uniformity.Its exterior leaf is dark green in color. The leaf blades are slightly wrinkled with smaller openness.The single head weight is about 4.2 kg.It tastes good and has super quality.It is resistant to virus diseases,downy mildew and black rot.Its yield is about 105.0 t·hm-2 .It has wide adaptability and is suitable to be cultivated in Beijing,Hebei, Tianjin,Liaoning,Jilin,Heilongjiang,Inner Mongolia and Shandong Provinces.The accumulated extension areas is about 20 000 hm2 .