苗用白菜新品种京研快菜2号的选育

A New Seedling-Edible Chinese Cabbage F1 Hybrid —‘Jingyankuaicai No.2’

京研快菜2号是由大白菜自交不亲和系03QX4A23和07338配制而成的以幼苗或半成株为主要食用部分的耐热、深绿色苗用白菜一代杂种。株型较直立,外叶深绿色,叶面皱,叶背面有光泽,无毛,叶肉厚,质地柔软,帮白色、较宽,品质佳。耐热、耐湿、抗病,适应性广。生长速度快,播种后28～30d(天)开始收获幼苗上市,每667m2产量4000～4500kg,适宜全国大部分地区栽培。

‘Jingyankuaicai No. 2’is a new seedling-edible Chinese cabbage F1 hybrid bred by crossing self-incompatible line 03QX4A23 with 07338.It is of upright plant type with dark green leaves. The leaf pulp is thick,soft with white petiole and without hair.It has wide adaptation and fast growing speed.It is tolerant to heat and wet.It can be harvested 28-30 days after sowing.Its yield is about 60.0-67.5 t·hm-2.It is suitable to be cultivated in most areas of China.