不同春化时间对不结球白菜现蕾开花的影响

为探求不同品种不结球白菜(Brassica campestris ssp.chinensis Makino)的冬性强弱,找出其适宜的春化时间,以4个不结球白菜品种为试材,在3℃条件下分别对萌动种子春化处理10、15、20、25 d,调查不同春化时间对各品种现蕾开花的影响,综合评价植株现蕾开花早晚及开花期植株形态。结果表明,奶白菜最适春化时间为10 d,青梗白菜最适春化时间为15 d,乌塌菜最适春化时间为20 d,京水菜最适春化时间为25 d。4个不结球白菜品种冬性由弱到强为奶白菜、青梗白菜、乌塌菜、京水菜。

Effects of Vernalization on Budding and Flowering of Brassica campestris ssp. chinensis Makino

In order to explore the winterness of different varieties of Chinese cabbage(Brassica campestris ssp.chinensis Makino),and find out the suitable vernalization temperature and vernalization time,four Chinese cabbage varieties were used as test materials which were treated at 3 ℃ for 10,15,20,25 d to investigate the effects of different vernalization time on budding and flowering,the time of budding and flowering and the plant porphologies in the period of flowering.The results showed that the optimum vernalization time for milk Chinese Cabbage,Chinese cabbage with green stipe,B.campestris ssp.chinensis var.Rosularis and B.juncea var.multisecta L.H.Bailey under 3 ℃ were 10,15,20 and 25 d respectively.The coldness order of four varieties from weak to strong is milk Chinese Cabbage,Chinese cabbage with green stipe,B.campestris ssp.chinensis var.Rosularis and B.juncea var.multisecta L.H.Bailey.