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月季切花瓶插过程中,内源腐胺在前2天略有增加,内源亚精胺、精胺、多胺总量则呈下降趋势,乙烯释放速率在第3天达到最高峰;多胺抑制剂甲基乙醛-双咪腙处理抑制了亚精胺、精胺的合成,增加了乙烯的释放速率;乙烯抑制剂氨氧乙酸处理推迟腐胺高峰的到来,降低了乙烯的释放速率,而且在瓶插期的前2天内源亚精胺、精胺含量较高。结果表明,具乙烯跃变型特征的月季切花衰老过程中,多胺与乙烯在其生物合成过程中相互竞争S-腺苷甲硫氨酸作为其合成的前体。
In the process of rose cut vase insertion, the amount of endogenous putrescine increased slightly in the first 2 days while the total amount of endogenous spermidine, spermine and polyamine decreased. The ethylene release rate reached the peak on the 3rd day. The inhibitor acetaldehyde-bis (imidazolium) -pyrazol inhibited the synthesis of spermidine and spermine and increased the release rate of ethylene. Ethylene oxide inhibitor Aminoxyacetic acid delayed the release of putrescine, reduced the release rate of ethylene, And in the vial of the first two days of exogenous spermidine, spermine content higher. The results showed that polyamine and ethylene competed with S-adenosylmethionine in their biosynthesis during the senescence of cut rose with ethylene hopping as their synthetic precursors.