极晚抽薹大白菜新品种冬春17号的选育

Breeding of Dongchun No.17 with Extremely Late Bolting Time,a New Chinese Cabbage Cultivar

冬春17号是以优CMS1-8-1为母本,自交系优1-7-3为父本配置的极晚抽薹大白菜一代杂种。植株半直立,株型紧凑,株高43 cm,开展度52 cm,叶球中桩合抱,特紧实,单球质量2.5 kg左右,品质优;抗逆性强,特别耐湿抗寒,抗多种病害。在贵州作越冬栽培生长期可延长至145 d以上仍未熟抽薹。丰产稳产,一般每667 m^2净菜产量5 000 kg左右,是冬春季节栽培的专用品种。

Dongchun No.17, a Chinese cabbage cuhivar with extremely late bolting time, is an F1 hybrid breeding by excellent CMS 1-8-8 as a female parent and inbred line 1-7-3 as a male parent. The plant is half up-right and compact type. The king-pile of ball is encircled tightly with plant high 54 cm, canopy 45.5 cm and 2.3 kg around per ball. It is better in quality and strong in stress resistance, especially in humidity tolerance, cold resistance and many diseases resistance. The growing period can be prolonged above 145 days under overwintering cultivation in Guizhou. It also has high and stable yield with net production around 5 000 kg/667 mE, and it is suitable for cultivation in spring and winter.