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Changes in Phytohormone Contents During Growth and Development of Female and Bisexual Flowers of Bitter Gourd (Momordica charantia L.)

文献类型： 外文期刊

作者： Chen, Xiaofeng 1 ; Huang, Yuhui 1 ; Feng, Chengcheng 1 ; Liang, Jiazuo 1 ; Huang, Xiongjuan 1 ; Ju, Xixi 1 ; Liu, Xinglian 1 ; Huang, Rukui 1 ; Zhou, Shengmao 1 ;

作者机构： 1.Guangxi Acad Agr Sci, Vegetable Res Inst, Nanning 530007, Guangxi, Peoples R China

2.Guangxi Key Lab Vegetable Breeding & New Technol D, Nanning 530007, Guangxi, Peoples R China

关键词： Momordica charantia L; Sex differentiation; Cucurbitaceae; Flower development

期刊名称：JOURNAL OF PLANT GROWTH REGULATION （ 影响因子：4.8； 五年影响因子：4.8 ）

ISSN： 0721-7595

年卷期： 2023 年

页码：

收录情况： SCI

摘要： Sexual differentiation in bitter gourd (Momordica charantia L.) directly affects breeding, seed reproduction, and production, and phytohormones are crucial signaling molecules that coordinate sexual expression. However, the specific roles of hormones in sex differentiation in bitter gourd have not been analyzed. This study aimed to compare the hormonal contents of female and bisexual buds. We found that the contents of gibberellins (GAs) GA(1) and GA(5) were higher in bisexual buds than in female buds at all stages. The levels of GA(4) and brassinosteroids were not significant between both bud types at the early stage, but in the subsequent stages, female buds had consistently significantly higher levels than bisexual buds, except typhasterol. The levels of GA(3), GA(6), and jasmonates were higher in bisexual buds than in female buds at the early stage, but in the subsequent stages, female buds had higher levels than bisexual buds. Indole-3-acetic acid levels were significantly higher in female buds than in bisexual buds at the early stage, but in the subsequent stages, female buds had lower levels than bisexual buds. Lastly, the ethylene and cytokinin levels were not significantly different between both bud types at early and late stages, but they were significantly higher in bisexual buds than in female buds at the middle stage. Salicylic and abscisic acid levels decreased significantly as both buds developed. These results provide new insights on hormonal regulation at the molecular level, and serve as a theoretical basis for breeding high-yield varieties of cucurbitaceous vegetables.

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