【摘要】 对平阴玫瑰花芽分化期叶片甲醇提取物进行IAA、ZR、GA3、ABA的分离、纯化和测定。结果发现,所测的几种激素均表现出明显的变化规律,其中IAA和GA3在花芽分化期含量逐渐下降,且在分化临界期出现一低峰,而ZR和ABA则完全相反。同时经比较分析得出ABA/GA3,ABA/IAA,ZR/GA3,ZR/IAA也表现明显的变化规律,即比值总体趋势是逐渐提高,且均在分化临界期含量出现一飞跃,显然ABA/GA3,ABA/IAA,ZR/GA3,ZR/IAA在平阴玫瑰的花芽分化过程中起着重要的调控作用,由此推测,增加植物体内的ABA、ZR的含量或降低IAA、GA3的含量,都可以促进玫瑰的花芽分化;反之则抑制其花芽分化。更多还原

【Abstract】 Endogenous hormones IAA,ZR,GA₃ and ABA in methanol extract of Rosa rugosa C.V Plena leaf during flower bud differentiation were isolated and purified,and their contents were determined.The results showed that during flower bud differentiation,IAA and GA₃ contents decreased gradually,with the minimum when flower bud begun to differentiate,while ZR and ABA were quite the contrary.The ratios ABA/GA₃,ABA/IAA,ZR/GA₃,and ZA/IAA had an increasing trend,with a leap,suggesting that they played an important role in regulating the process of Rosa rugosa C.V Plena flower bud differentiation.It’s speculated that increasing the ABA and ZA contents or decreasing the IAA and GA₃ contents in Rosa rugosa C.V Plena might be able to accelerate its flower bud differentiation.更多还原