大白菜新品种秋早55的选育  

A New Chinese Cabbage F_1 Hybrid —‘Qiuzao 55’

作　　者：张鲁刚[1] 惠麦侠[1] 张明科[1] 

机构地区：[1]西北农林科技大学园艺学院

出　　处：《中国蔬菜》2006年第12期28-30,共3页China Vegetables

基　　金：国家"863"项目(2001AA241124);陕西省科技攻关项目(2004K02-G12-03;2005K01-G8-01)

摘　　要：秋早55是由自交不亲和系99-YS14和自交亲和系98-YS8配制而成的早熟秋大白菜一代杂种。生育期55d（天）左右，叶色翠绿，叶柄白色，叶缘波折中密，生长势强，外叶7～8片，最大叶长37cm。矮桩型，株高30．4cm，开展度65．0cm。叶球叠抱，倒卵圆形，结球极为紧实。球叶乳白色，球高16．7cm，横径15．2cm，球形指数1．1，单球质量2．1kg左右，净菜率76．0％以上，球叶数28片左右。对病毒病、霜霉病和软腐病的抗性与中白50相当，软叶率高，粗纤维少，品质极佳。一般每667m^2产净菜4350kg左右，适于早秋和秋延后栽培。Qiuzao 55 is a new F1 hybrid of autumn Chinese cabbage with early-maturity developed by crossing selfbred line 99 - YS14 with 98 - YS8. It can be harvested in 55 days after sowing. It has green leaf,white petiole, intermediate of leaf margin undulation, seven to eight outer leaves. Its leaf head is obovate, in white color, 16.7 cm in height, 15.2 cm in diameter, 2.1 kg in weight. Its resistance to virus, downy mildew and soft rot is similar to Zhongbai 50. Its net yield is 65.25 t · hm^-2 It is suitable to be cultivated in autumn.

关 键 词：大白菜 秋早55 一代杂种 早熟 

分 类 号：S634.1[农业科学—蔬菜学]