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| A New Chinese Cabbage F1 Hybdd —‘Shiyuqiubao’ |
| YUAN Rui-jiang，WANG Li-qiao，AN Jin-jun，ZHANG Mai-shou，YAO Yin-juan，YOU Xiu-na |
| Shijiazhuang Academy of Agricultural Sciences，Shijiazhuang 050021，Hebei，China |
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Abstract ‘Shiyuqiubao’is a new Chinese cabbage Fl hybrid，developed by crossing 2 self-incompatible lines 88-11-1 and 87-10-1．It takes 88 days from sowing to harvesting．Its leaf head is straight and unfolding（a few has pointed top）．Its plant height is 59-61 cm，expansion is 63 cm，longitudinal dia is 52-54 cm，transverse dia is 12-14 cm．The yield is 90-105 t?hm-2．It is of high quality．It has firm leaf head and little fiber．It does not easily bolting．It tastes good and is tolerant to storage and transportation．It is highly resistant to virus disease and black rot，and resistant to downy mildew．It is suitable for cultivation in Beijing，Tianjin，Hebei，Liaoning，Heilongjiang，Shandong，etc．regions in autumn as Chinese cabbage of middle and late maturity．
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Received: 14 June 2011
Published: 28 June 2011
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