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| A New Pakchoi F1 Hybrid —‘Chunyou No.1’ |
| ZHAO Xiu-yun，ZHANG Feng-lan*，XU Jia-bing，YU Yang-jun，ZHANG De-shuang，YU Shuancang，
LU Gui-xiang，WANG Wei-hong |
| Vegetables Research Center， Beijing Academy of Agriculture and Forestry Science， Beijing 100097， China |
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Abstract ‘Chunyou No.1’ is a high quality pakchoi F1 hybrid with late-bolting，vase shape and
high stable yield．It is developed by crossing 2 self-incompatibility lines 2006-29 and 2005-113．The
plant is 17 cm in height and 25 cm in width．It has green flat and glossy leaves．The petiole is green
with 5.3 cm in width and 0.9 cm in thickness．The average single plant weight is about 0.24 kg and its
yield is about 37.5 t·hm-2．It is suitable for winter and spring cultivation and has been extended to
Beijing，Tianjin，Hebei，Jiangsu，Shanghai，Zhejiang，Fujian Provinces with total area of about
20 000 hm 2.
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Received: 23 September 2013
Published: 25 October 2013
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