Changes in Endogenous Polyamine and Hormone Contents during Different Fruit Developing Stages in Loquat

Abstract

Abstract: Endogenous polyamine, phytohormone and protein contents in loquat fruit growth process were determined by HPLC, ELISA and commassie blue G250 methods respectively. And the relationship between the contents of endogenous polyamine, phytohormone and protein and the different growth process in loquat fruit were studied. The results showed that Spd content was highest, followed by Spm, and the Put was lowest in developing process of ovule. However The contents of 3 polyamines in flesh of loquat from high to low were Spd、Put and Spm. The contents of polyamines increased very quickly with fast developing stage of ovule and flesh. Changes of (Spd+Spm)/(Put) and（Spm）/(Pas) ratio in early developing stage of fruit reached a peak from 26 to 34 day after anthesis, while the fruit grew faster in the very stage. In this research, the higher content of GA1＋3 was consistent with that of Spd in young fruit of Loquat. Higher ratio of GA3/ABA appeared in fast developing stage of the fruit, which showed the closely relative relationship between endogenous polyamines and hormones.

CLC Number:

Q945

Cai Jianxiu, Liu Guoqiang, Chen Wei. Changes in Endogenous Polyamine and Hormone Contents during Different Fruit Developing Stages in Loquat[J]. Chinese Agricultural Science Bulletin, 2007, 23(9): 17-17.

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