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在普通白菜(小白菜)早花突变体ef(early flowering)真叶生长期,应用赤霉素(GA3)与多效唑(PP333)对植株进行处理,在测量株高、开展度、叶片数以及对植株抽薹、显蕾、开花日期进行观察的基础上,测定了愈创木酚过氧化物酶(G-POD)和抗坏血酸过氧化物酶(APX)的活性。结果表明,GA3和PP333处理对植株株高、G-POD和APX活性均有极显著的影响,但对开展度和叶片数却影响不大。GA3处理后植株的G-POD活性表现为先下降后上升,但PP333处理结果正好相反;GA3和PP333处理后植株的APX活性均表现为先下降后上升。不同处理对ef突变体的开花时间有显著的影响,GA3处理能促进植株开花,而PP333处理却延缓其开花。
The plants were treated with gibberellin (GA3) and paclobutrazol (PP333) during the true leaf growth phase of early flowering (ef) early flowering of common Chinese cabbage (Brassica chinensis). After measuring plant height, The activity of guaiacolperoxidase (G-POD) and ascorbate peroxidase (APX) were measured on the basis of observing bolting, budding and flowering date. The results showed that GA3 and PP333 had a very significant effect on the plant height, G-POD and APX activities, but had little effect on the degree of development and the number of leaves. The G-POD activity of the plants treated with GA3 decreased first and then increased, but the result of PP333 was the opposite. The APX activities of the plants treated with GA3 and PP333 showed the first decrease and then the increase. Different treatments had a significant effect on the flowering time of ef mutant. GA3 treatment could promote plant flowering, while PP333 treatment delayed its flowering.