Changes in endogenous hormone concentrations during inflorescence induction and development in pineapple (Ananas comosus cv. Smooth Cayenne) by ethephon
文献类型: 外文期刊
作者: Liu Sheng-hui 1 ; Zang Xiao-ping 1 ; Sun Guang-ming 1 ;
作者机构: 1.CATAS, S Subtrop Crops Res Inst, Zhanjiang 524091, Peoples R China
2.Natl Ctr Important Trop Crops Engn & Technol Res, Haikou 571300, Peoples R China
关键词: Pineapple;inflorescence initiation;inflorescence development;endogenous hormone
期刊名称:AFRICAN JOURNAL OF BIOTECHNOLOGY ( 影响因子:0.573; 五年影响因子:0.794 )
ISSN: 1684-5315
年卷期: 2011 年 10 卷 53 期
页码:
收录情况: SCI
摘要: This study investigated the changes of five endogenous hormones in the shoot apex and the white bases of D-leaf during the inflorescence induction and development of 'Smooth Cayenne' pineapple, using 14-month-old pot-grown plants as material and ethephon as flower forcing agent. Results showed that application of ethephon increased the level of endogenous ethylene (C(2)H(4)), abscisic acid (ABA) and 2-isopentyl adenine (2-iP) while it decreased the concentration of indole-3-acetic acid (IAA), gibberellic acid (GA(3)) and zeatin (ZT), and led to the transition of vegetative growth to inflorescence initiation. After inflorescence initiation, the contents of C(2)H(4), ABA and 2-iP declined but the contents of IAA, ABA and ZT increased. These results indicated that low levels of IAA, GA(3) and ZT and high levels of C(2)H(4), ABA and 2-iP facilitated inflorescence initiation, while high levels of ZT, IAA and GA(3) and low levels of C(2)H(4) and ABA facilitated inflorescence development.
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