春化天数对大白菜、小白菜现蕾和开花的影响

Study of Veneration-day Influence on Bolting and Flowering of Heading Chinese Cabbage and Non-heading Chinese Cabbage

采用0,15,20,25,30d5种不同春化处理天数对5份大白菜和5份小白菜抽薹和开花的影响进行了研究。结果表明,对大白菜而言,冬性强的和较强的材料(B,D,E),春化时间以20d为宜,冬性弱的材料(A,C)以15d为佳,冬性强的材料初花天数为50d左右,冬性弱的材料为37d。对小白菜而言,春化天数以15d为佳,冬性强的材料初花天数为46d,其他为38d左右。春化天数长,开花略早,但差异不显著。在试验中,小白菜除J的冬性较强外,其他各材料冬性相差不大,不易分开,这可能与小白菜现蕾和开花需一定光照有关。可见小白菜在春化天数满足条件下,光照才是影响现蕾和开花的关键因子。

5 heading Chinese cabbage(Brassica campestris L.ssp.pekinensis) and 5 nonheading Chinese cabbage (Brassica campestris L.ssp.chinensis) were studied on bolting ability and flowering stage through 5 different veneration controls 0,15,20,25,30 days.Results showed,for Chinese cabbage materials with strongest and stronger bolting ability,the bolting time is nearly 20 days,for example,B,D and E materials.The weaker bolting materials,for example A and C,the bolting time is nearly 15 days.For nonheading Chinese cabbage the bolting time is nearly 15 days.In this paper 5 nonheading Chinese cabbage except that J material had stronger bolting ability,others were nearly the same in bolting ability.They could not be distinguished.The reason may be related to the light affecting bolting ability.Therefore,light is the main reason for bolting and flowering for nonheading Chinese cabbage when the bolting time is sufficient to bolt.