关键词: 菜心, 油绿501菜心, 系统选育

Abstract: ‘Youlv 501 caixin’is a new conventional Chinese cabbage variety developed by systematic breeding. It is of early maturity. It takes 32-35 days from sowing to harvest, and grows vigorously. The plant height is 24.4 cm. It can develops up to 21.3 cm. Its base-leaves are round with green and shiny color. Its leaf is 18.3 cm in length, 10.2 cm in width, and 5.2 cm in petiole length, 1.6 cm in petiole width. Its sprout leaves are of short-oval shape. The flower stalk is sturdy. Its major sprout is 18.4 cm in height, 1.7-2.0 cm in diameter, and about 40.3 g in weighs. It has tidy bolting, less fiber, sweet crisp quality, and no slag. It yields about 15.0 t?hm-2. It is suitable to grow in plain areas from late April to early November.

Key words: Flowering Chinese cabbage, ‘Youlv 501 caixin’, Systematic breeding