关键词: 白菜, 普通白菜, 耐抽薹, 一代杂种, 品种

Abstract:

‘Chunyou 4’is a new pakchoi F₁ hybrid developed by crossing two self-incompatible lines 120754 and 120758. The plant type is erect. The plant is 20.2 cm in height and 19.5 cm in width after 50 days of sowing in spring cultivation. The leaf is flat,green and shiny,with 12 cm in width. The number of blades is nine. The petiole is green,less wax powder,with 4.3 cm in width and 0.83 cm in thickness. The single plant weight is about 0.19 kg. It is resistant to TuMV,black rot and downy mildew. It is tolerant to late-bolting with good commodity. It is suitable for cultivated in Beijing,Tianjin,Hebei,Shandong,Liaoning,Shaanxi,Gansu,Jiangsu,Shanghai,Anhui and other provinces at solar greenhouse in winter and open field in spring cultivation.

Key words: Brassica campestris ssp. chinensis var. communis, pakchoi, late-bolting, hybrid, cultivar