大白菜新品种云春白4号的选育

A New Chinese Cabbage F1 Hybrid—‘Yunchunbai No.4’

云春白4号是由自交不亲和系14215和CM13241配制而成的大白菜一代杂种,生育期70~80 d(天);植株生长势强,株型紧凑,合抱H型,外叶浓绿,心叶金黄;株高32 cm,开展度58 cm,球高23 cm,横径10~11 cm,球形指数1.8,净菜率71.6%,一般净菜产量5300 kg·(667 m^2)^-1左右;品质优良,可溶性糖含量2.21%,VC含量219.0 mg·kg^-1,耐抽薹性强,田间对病毒病、霜霉病、软腐病的抗性与对照春月黄相当,适于1600~2000 m高海拔区域的贵州、云南蔬菜主产区春秋季种植。

‘Yunchunbai No.4’is a new Chinese cabbage F1 hybrid bred by crossing self-incompatible lines‘14251’and‘CM13241’as parents.Its growing period is 70-80 days.The plant has strong growth vigor and compact type.Its outer leaves are dark green in color,and inner leaves are golden yellow in color.The plant is 23 cm in height and 58 cm in width.Its head is 23 cm in height and 10-11 cm in diameter.The spherical index is 1.8,and net-head rate is 71.6%.Its net vegetable yield is about 79.5 t·hm^-2.The soluble sugar content is 2.21%and VC content is 219.0 mg·kg-1.Its resistances to virus disease,downy mildew and soft rot in fields are equal to that of the contrast‘Chunyuehuang’.It is suitable for planting in major vegetable producing regions of Guizhou and Yunnan Provinces with 1600-2000 m high altitude in spring and autumn.