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| A New Pakchoi F1 Hybrid —‘Jiguang 357’ |
| HUANG Zhiyin1，ZHANG Hong1，FAN Weiqiang1，WANG Chaonan2，LI Mei2，LIU Xiaohui2，ZHANG Bin 2* |
| 1 Tianjin Kerun Vegetable Research Institute，State Key Laboratory of Vegetable Germplasm Innovation，Tianjin Key Laboratory of Vegetable Genetics and Breeding Enterprises，Tianjin 300381，China；2 Institute of Vegetables，Tianjin Academy of Agricultural Sciences，Tianjin 300384，China |
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Abstract ‘Jiguang 357’is new pakchoi F1 hybrid developed by crossing 2 self-incompatible lines‘KH03’and‘NC05’．The plant is of semi-erect type，about 22 cm in plant height and about 25 cm in spread width．It has big head，beam waist and abound leaf numbers．It grows fast．Its leaves are dark green in color with wide，smooth and green petioles，but without wax powder．Its glossiness is strong．This variety is high resistant to virus disease and downy mildew，resistant to soft rot，and tolerant to low temperature and bolting．The contents of crude fiber and soluble sugar are 0.8% and 3.57%，respectively．It is yield about 67.5 t · hm-2．It is suitable for planting over winter，in cooler spring for crop rotation，and open fields in southern areas of the Yangtze River and protected fields in northern areas of the Yangtze River．
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Received: 26 July 2021
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