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| A New Seedling-edible Chinese Cabbage F1 Hybrid —‘Jingyankuaicai No. 4’ |
| YU Yang-jun，ZHANG Feng-lan，ZHANG De-shuang，ZHAO Xiu-yun，YU Shuan-cang，WANG
Wei-hong，XU Jia-bing |
（Beijing Vegetable Research Center， Beijing Academy of Agriculture and Forestry Sciences， Key Laboratory of Biology
and Genetic Improvement of Horticultural Crops（North China）， Ministry of Agriculture， Beijing 100097，
China） |
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Abstract ‘Jingyankuaicai No.4’ is a new seedling-edible Chinese cabbage F1 hybrid bred by
crossing self-incompatible line 10163 with 10187．It has soft，yellow green leaves and wider，thicker，
white petiole without hair. It has good quality．It is tolerant to wet and bolting and resistant to diseases．
It fits to be cultivated in winter or spring in protected fields in northern China and over winter in southern
China．It grows rapidly．Its seedlings can be harvested 28-30 days after sowing．In Beijing area，it is
sowed on Sep. 15，thirty-five days after sowing its plant height can be about 32.3 cm，the single plant
weight can be 294 g．Its yield is about 67.5-75.0 t·hm-2．It has been extended to Beijing，Yunnan，
Hunan，Guangdong，Guangxi，Fujian and Hainan，etc.
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Received: 13 November 2012
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