青梗菜新品种童冠2号的选育及其栽培技术

Breeding and cultivation techniques of a new pakchoi F1 hybrid Tongguan No. 2

童冠2号是以自交不亲和系Qgc431作母本、Qgc452作父本杂交育成的杂交一代青梗菜新品种。该品种株型矮小紧凑、束腰性好,叶片阔椭圆形、叶色绿、叶脉不明显,叶柄淡绿、扁平宽厚,外观商品性好,食用品质佳。浙江地区秋季设施栽培45 d采收,株高18.2 cm,株幅22.2 cm×23.3 cm,最大叶长21.2 cm、宽12.5 cm,叶柄长6.3 cm、宽4.0 cm,单株鲜重149.7 g,667 m^(2)产量约1873.0 kg。高抗病毒病、中抗软腐病;适应性较强,适宜全国各地栽培,其中长江中下游及相似生态特点地区适宜晚春、秋季栽培。2023年申请浙江省农作物品种审定委员会认定。

Tongguan No.2 is a new pakchoi F1 hybrid that is developed by two self-incompatible lines Qgc431 as the female parent and Qgc452 as the male parent.The plant type is petite,compact and high level of girding.The leaves are broad oval,with green color and non-obvious veins,and the petioles are smooth,wide and thick with pale green color.In short,the appearance and the quality of flavor are good.It is harvested about 45 days after adopting facility protective planting in autumn in Zhejiang area.The size of plant is 18.2 cm in height and 22.2 cm×23.3 cm in expansion diameter.The maximum leaf length is 21.2 cm,the maximum leaf width is 12.5 cm,the petiole length is 6.3 cm,the petiole width is 4.0 cm.The average weight of single plant is about 149.7 g,and the average yield per 667 m^(2) is about 1873.0 kg.It is highly resistant to virus disease,moderately resistant to soft rot.It has wide adaptability all over the country for cultivation.It is suitable for planting in late spring and autumn when cultivated in the middle and lower reaches of the Yangtze River and similar ecological characteristics area.It was applied for the identification of Zhejiang Crop Cultivar Approval Committee in 2023.