【摘要】 大白菜通过春化后至抽薹,叶色由绿变灰,这一叶色转变过程在弱冬性品系上的表现尤为突出。本试验以不同冬性的大白菜品系为材料,从激素、色素含量变化和蛋白质组分变化等方面研究大白菜抽薹过程叶色转变前后的生理变化。结果表明:激素、色素含量和蛋白质的变化均与叶色转变有一定关系,叶绿素a/b、IAA和GA3含量均在叶色转变期出现峰值。更多还原

【Abstract】 Chinese cabbage〔Brassica campestris L.ssp.pekinensis(Lour.)Olsson〕shows leaf color transition during the period from vernalization to bolting.After the change it will bud and then bolting,flowering.This phenomenon is particularly prominent in early-bolting species.In present study,Chinese cabbage cultivars of late-bolting and early-bolting were used to investigate the physiological changes during leaf color transition in the bolting process.The results revealed that there were some correlations between leaf color transition and the hormones,pigment content and protein composition.The content of chlorophyll(a/b),IAA and GA3 reached their peak in bolting process,the stem initiates elongation growth after leaf color is changed.The changes of leaf color are physiological signal in Chinese cabbage bolting.更多还原