关键词: 普通白菜, 春化作用, 加代, 浙南地区

Abstract: Taking 3 types of pakchoi〔Brassica campestris L. ssp. chinensis（L.）Makino var. communis
Tsen et Lee〕with different bolting ability as test material，this experiment adopted different low temperature
and illumination to induce vernalization on seedlings，and studied the effects of 9 vernalization combinations
on vegetative mass，bolting，blooming and seed quality of pakchoi．The results showed that the maximum
differences in plant open width degree among different vernalization combinations in early，medium and late
bolting types were 17.1，6.3 and 6.5 times．And the maximum differences in single plant weight were 5.6，
2.8 and 2.9 times，respectively．The flowering date of each bolting type were significantly ahead of schedule，
along with the increase of vernalization days number．For the early bolting，medium bolting and late bolting
types，the maximum differences of flowering date between the different vernalization combinations of early
bolting and medium bolting types were 54，39 and 36 days．For the early bolting and medium bolting types，
the average single plant seed weight and germination rates were the best，when the vernalization treatments
were happened on 20-20，20-25，respectively．By adjusting bolting anthesis and seed collecting stage，
breeding generation-adding link and normal breeding cycle were complete articulation，thus realizing the
breeding target of 2 generations one year for pakchoi in southern Zhejiang areas．

Key words: pakchoi〔Brassica campestris L. ssp. chinensis（L.）Makino var. communis Tsen et Lee〕, vernalization；generation-adding, Southern Zhejiang areas