关键词: 花椰菜, 温敏雄性不育, 品种

Abstract: A new cauliflower cultivar，‘Shengxue 4’，is a medium-maturing F1 hybrid created by the thermo-sensitive male sterile line. The plant is moderately strong in growth potential with dark green leaf，the height and width of that is 67.3 cm and 78.3 cm. The curd of the cultivar is tight，round or tall round，white，smooth in surface，and good in quality. From planting to harvest it needs about 75 d in Spring，the average weight of single curd is 1.17 kg，and the yield is 43 500 kg ? hm-2. In Autumn，the time from seeding to harvest is 113 d，the weight of single curd is 1.24 kg，and the yield is 48 000 kg ? hm-2. It is suitable for planting in the northwest of Gansu and the same climatic zones.

Key words: cauliflower, thermo-sensitive male sterile, cultivar