四种内源激素在HPGMR叶片中的含量与育性转换

THE CONTENT OF FOUR ENDOGENOUS HORMONES IN LEAVES AND FERTILITY TRANSFORMATION OF HPGMR

In order to clarify whether endogenous hormones are involved in the regulatoryprocess of HPGMR we analysed four hormones, IAA, GAs, ABA and ZT, of LD andSD by HPLC. The main results are as follows: Four hormones fluctuation of Nongken58s is distinctly different from Nongken 58; Free-IAA under LD is remarkably lowerthan that of SD, which appeared serious deficiency at all developing stages. GAs levelunder LD is higher than that of SD. ABA level under LD is the same as SD beforemeiosis and increase sharpply at meiosis. At matured pollen stage, four hormones appe-ared at very low level; The results indicated that serious IAA deficiency at fertilitytransformation and expression stage is believed to be main cause leading to fertile trans-formation. And changes of three hormones at fertile transformation is believed to bethe regulation of metabolism caused by IAA deficiency. IAA deficiency destroys theequilibrium among the hormones. After pollen abortion, the low hormone level iseffect rather than cause of it.