4种复合型植物生长调节剂对望天树苗木生长生理的影响

Effects of Four Complexed Plant Growth Regulators on the Growth and Physiology of the Seedlings of Parashorea chinensis

为探讨不同植物生长调节剂对望天树Parashorea chinensis苗木生长及生理特性的影响,以1 a生望天树实生苗为研究对象,研究复合型植物生长调节剂(植富、喜硕、B-1、ABT1号)对苗木生长及其内源激素、叶绿素、抗氧化酶活性的影响。结果表明4种植物生长调节剂在对于望天树苗木生长生理各项指标上具有一定影响。其中,ABT1号生长调节剂对于望天树苗木苗高、地径、生物量积累、叶绿素增长具有显著促进作用,且对苗木MDA含量表现出较高的抑制效果;B-1生长调节剂显著促进苗木内源激素GA3、IAA、ZR、ABA含量,并提高SOD酶活性;植富生长调节剂则可有效提高苗木叶绿素a、叶绿素b及总叶绿素含量。在望天树育苗管理上,可根据苗木生长需求,使用ABT1号、B-1、植富生长调节剂来调控苗木生长质量,从而提高苗木品质及其抗逆能力。

To explore the effects of different plant growth regulators on the growth and physiological characteristics of the seedlings of Parashorea chinensis.Taking the annual seedling of P.chinensis as the research object,to study the effects of compound plant growth regulators(ZF,XS,B-1,ABT1)on the growth of seedlings and the activities of endogenous hormones,chlorophyll and antioxidant enzymes.The results showed that there are four kinds of plant growth regulators that had certain effects on the growth physiological indexes of the seedlings of P.chinensis.Among them,the ABT1 growth regulator significantly promoted the growth of seedling height,ground diameter,biomass accumulation and chlorophyll,and showed a high inhibitory effect on the content of MDA in the seedlings.B-1 growth regulator significantly promoted the contents of endogenous hormones GA3,IAA,ZR and ABA,and increased the activity of SOD.ZF growth regulator can effectively increase the content of chlorophyll a,chlorophyll b and total chlorophyll of seedlings.In the management of seedlings of P.chinensis,according to the growing needs of seedlings,growth regulators ABT1,B-1 and ZF can be used to regulate the growth quality of the seedlings according to the growing demand of the seedlings,so as to improve the quality and stress resistance of the seedlings.