西瓜果实不同发育时期内源激素含量的变化

西瓜果实不同发育时期内源激素含量的变化

豆峻岭,刘文革,赵胜杰,路绪强,何楠,朱红菊,高磊

(河南省果树瓜类生物学重点实验室·中国农业科学院郑州果树研究所郑州450009

摘要: 以二倍体西瓜‘蜜枚’为试材,对果实生长发育期几种内源激素的含量进行了分析测定。结果表明,西瓜果实中激素含量与其生长发育密切相关。西瓜果实在授粉后25~30 d 时就已经基本达到成熟果实的大小。果实发育前期IAA GA 含量较高,之后均快速下降。IAA 在后期出现一个峰值,而GA 在发育后期含量一直维持在较低的水平;ABA 含量在西瓜生长发育过程中出现了2 个峰值,分别出现在授粉后15 d 25 d;而ZR 含量在西瓜整个生长发育期一直维持着较低水平,且变化不大,在授粉后25 d 出现一个较小的峰值。这些结果说明不同植物激素相互协调地调控着西瓜果实的生长发育。

关键词: 西瓜; 生长发育; 激素

Change of Endogenous Hormone Content during Watermelon Fruit Development

DOU Jun-ling LIU Wen-geZHAO Sheng-jieLU Xu-qiang HE Nan ZHU Hong-ju GAO Lei

Zhengzhou Fruit Research Institute CAAS Zhengzhou Henan 450009 China

Abstract Diploid watermelon Mimei was used to to analyze the changes of hormones during fruit developing period in this research. The results showed that there was an affinitive relation between hormones content of the fruit and the fruit growth. The fruit reached its full size 25 d and 30 d after pollination. The contents of IAA and GA were high in the early development and declined fast in later development stage. The content of IAA had a peak value at 30 d after pollinationwhile the content of GA was maintained in lower level in the late period of development. There were two peak ABA values at the 15 and 25 d after pollination. The content of ZR was maintained a low level in the whole developing only had a smaller peak value at 25 d after pollination. These results demonstrated that the watermelon fruit growth and development was regulated by hormone combination.

Key words Watermelon Growth and development Hormone

来源:中国瓜菜,2014272): 12-15

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