Shanghai Key Laboratory of Protected Horticultural Technology，Horticultural Research Institute，Shanghai Academy of Agricultural Sciences，Shanghai 201403，China
Abstract：‘Zhengniu’is a new cabbage F1 hybrid developed by crossing cytoplasmic male sterile line CMS-101 with an inbred line 2004-30．It belongs to upright plant type with 53 cm in expansion diameter．Its outer leaves are obovate type in deep green with light wax powder．The pointed head is compact with good quality．Its leaf head is 20 cm in height，14 cm in diameter．The center core is 8.5 cm in length less than the half of head height．The average single head weight is 1.04 kg．Its yield is about 40.5 t?hm-2．It can be used as overwinting spring cabbage with tolerance to bolting and also as autumn cabbage with resistance to black rot．It is suitable to be cultivated in east China and central China．
