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远红色光增强的顶峰主导性刺激了甜中的花和水果流产
Sijia Chen1, Leo F M Marcelis1, Remko Offringa2
1Horticulture and Product Physiology, Wageningen University and Research, Droevendaalsesteeg 1, 6708 PB Wageningen, The Netherlands.
Plant physiology
|February 17, 2024
概括
远红色的光线增强了顶峰的支配力,增加了甜芽中的auxin. 这导致果子流产,因为它增加了树枝和花朵之间对资源的竞争.
科学领域:
- 植物生理学 植物生理学
- 园艺科学 园艺科学
- 摄影生物学 摄影生物学
背景情况:
- 远红色辐射影响了许多植物发育过程.
- 在植物架构和资源分配中,形主导起着重要作用.
- 花和水果的流产可以显著影响作物产量.
研究的目的:
- 为了研究尖端主导在甜 (Capsicum annuum L.) 中远红光诱导的花和果子流产中的作用.
- 阐明这种现象背后的荷尔蒙和生理机制.
主要方法:
- 使用白色或红色丰富的LED光和补充深红色光的受控气候室实验.
- 通过首和抑制辅酶运输来操纵顶峰主导地位.
- 测量牛津度,内节长度和果子流产率.
- 分析花朵中的糖糖积累和逆转酶活性.
主要成果:
- 额外的远红光增强了顶点主导地位,增加了主导射击顶点的辅酶水平.
- 远红光诱导的水果流产发生在完整但未被砍头的植物中.
- 抑制发芽中的奥素生物合成减少了果子流产,独立于光线条件.
- 远红色光线暴露导致花朵中糖积和逆转酶活性降低.
结论:
- 基础的auxin流不会调解远红色光刺激的果子流产.
- 在深红色光线下,芽果中素的增加可能会通过加强资源竞争来促进水果流产.
- 这种竞争限制了进口至关重要的同化成花的进口,导致堕胎.
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