花在植物中的位置直接和通过表观学影响繁殖成功
Alicia Valdés1,2, Johan Ehrlén1,2
1Department of Ecology, Environment and Plant Sciences, Stockholm University, Stockholm, SE-106 91, Sweden.
American journal of botany
|September 16, 2024
概括
花的位置会影响植物的繁殖成功. 基底花比远端花更早开花,更高的果,和更多的种子掠食,显示了本体遗传的偶然性.
科学领域:
- 植物生殖生态学 植物生殖生态学
- 发育生物学是发展生物学.
- 进化生物学是进化的生物学.
背景情况:
- 植物中个体内特征的变异可能来自于本体遗传的偶然性,受结构位置,发育史和环境的影响.
- 花和花朵的位置会影响资源分配,表观,相互作用和植物的繁殖成功.
- 植物生殖特性的个体内变异的原因和后果仍未得到充分研究.
研究的目的:
- 为了研究花内和花间的花位置如何影响Lathyrus vernus的繁殖成功 (水果和种子组) 和种子掠食.
- 确定花的位置与繁殖成功/种子掠食之间的关系是否由表态调解.
- 评估环境因素是否影响花位置对繁殖成功的影响.
主要方法:
- 在三年内研究了5883朵Lathyrus vernus的花朵.
- 评估水果组,种子组和种子掠食性,与花在种子组中的位置以及种子之间的位置相关.
- 分析了表观学的调解作用和外部环境对位置效应的影响.
主要成果:
- 基底的花朵和花圈表现出较早的开花和较高的果,而不是远端的.
- 基础花朵经历了增加的种子掠食.
- 现象学在很大程度上解释了水果和种子之间的差异,但不是在种子中.
- 对果的积极影响取决于一年内开花的持续时间.
结论:
- 在植物现象学和繁殖成功方面,本体遗传偶然性对个体内部的变异有显著的贡献.
- 生殖结构的空间分布影响了特征的变化和适应性,使其成为自然选择的目标.
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