关键词: 萝卜, 早熟, 一代杂种, 抗根肿病

Abstract: ‘CR Chuyu 2’is a novel early maturing autumn radish cultivar with clubroot resistance derived from the cytoplasmic male sterile line B20-2-1-1-2-1A as female parent and the inbred line B9-3-1-5-1-1-1 as male parent. The taproot is long cylindrical shape，with white cortex，smooth epidermis and blunt round tail. Additionally，the size of taproot is 27–32 cm in length and about 7 cm in width. The weight of taproot is approximately 1.5 kg. The yield reach 75 000–82 500 kg · hm^-2. This cultivar is highly resistant to clubroot，tolerant to root cracking，and not easy to get hollowness. Therefore，it is suitable for summer cultivation on alpine areas and autumn cultivation on plain areas in the Yangtze River basin，with a growth period of 55–60 days.

Key words: radish, early maturing, hybrid, clubroot resistance