Yang Yongqing，Xu Mao，Liu Shuhui，Mu Weiwei，Gao Jianfang，Qi Yinwei,Gao Dianjun,Li Haixia
1Beijing Baimu Seed Sprout Co. Limited, Beijing 101311, China; 2Plant Industry Service Centre of Shunyi District of Beijing, Beijing 101300, China; 3Plant Industry Service Centre of Aquiculture Service Center of Chaoyang District, Beijing 100018, China
Abstract：‘Mutian No.9’is a new spring cabbage F1 hybrid developed by combining TWJ113A line with BJU01A line. It is a very early-matured cultivar. It takes 42-45 days from transplantation to harvest. Its outer leaves are green and bright and its leaf head is round and compact. Its dwarf stem in head is less than the half of the height of the leaf head. It tastes sweet and fragile, and the content of VC, ash, total sugar, crude protein, crude giber is 509 mg•kg-1, 6.28 %, 4.03 %, 1.03 %, 0.50 %, respectively. Its yield is generally around 52.5-60.0 t•hm-2. It is suitable to grow in the outskirts of Beijing and Northern China.
