耐热耐湿普通白菜新品种国夏1号的选育

国夏1号是由Y436和Y231-k选配而成的具有较强耐热耐湿能力的普通白菜一代杂种。束腰美观,株型较矮;叶片舒展,叶色绿,叶柄宽,帮色绿,蜡粉少。北京地区8月10日播种,播种后40d(天)国夏1号株高19cm,开展度35cm,叶柄宽4.9cm,叶柄厚1.1cm,平均单株质量231g,每667m2产量3010kg。抗Tu MV,高抗黑腐病和霜霉病,耐热、耐湿,适宜夏秋季栽培。目前已在京津冀、上海、福建、山东等地区推广,累计推广面积超过30000hm2。

A New Pakchoi F1 Hybrid —‘Guoxia No.1’

‘Guoxia No.1’ is a new pakchoi F1 hybrid developed by crossing 2 self-incompatible lines ‘Y436’and‘ Y231-k’．This variety is of dwarf plant type with beautiful appearance．Its leaves are stretched and green in color with broad petiole and less wax powder．It is sowed in August 10 in Bejing area．Forty days after sowing，its plant is 19 cm in height and 35 cm in width．Its petiole is 4.9 cm in width and 1.1 cm in thickness．The average single plant weight is 231 g．It can yield 45.15 t·hm-2．It is resistant to TuMV and highly resistant to black rot and downy mildew．It is tolerant to heat and moisture．It is suitable for summer and autumn cultivation．It has been extended to Beijing，Tianjin，Shanghai Municipalities，and Hebei，Fujian and Shandong Provinces with over 30 000 hm2 total areas．