多效唑对苗期稻麦叶片内源游离态激素含量的影响

Effects of Paclobutrazol ( PP333) on Free Endogenous Hormones Concentration in the Leaves of Rice and Wheat Seedling

通过水培试验研究了不同浓度的多效唑处理对苗期稻麦叶片内源游离态激素含量的影响。结果表明,多效唑的处理浓度与苗期水稻、小麦叶片内源游离态吲哚乙酸(IAA)和赤霉素类物质(GA1/3)的含量呈反相关,而与玉米素(ZRs)和脱落酸(ABA)的含量呈正相关。这说明,多效唑对植物生长的调节机理之一是通过调节多种激素的平衡和相互作用来实现的。

Hydroponics experiment was conducted to investigate effects of paclobutrazol ( PP333) on free endogenous hormones concentration in the leaves of rice and wheat seedling. Results showed that free endogenous IAA and GA1/3 concentration in the leaves of rice and wheat seedling was negative correlation, and free endogenous ZRs and ABA concentration was positive correlation with concentration of paclobutrazol. These showed that the balance and interaction of multi - hormones was one of regulation mechanisms of paclobutrazol ( PP333) to the growth of plant.