可变的资源分配模式,有偏见的性别比率,以及在亚二卵性Hippophae rhamnoides中的性二态度的程度
Manisha Jhajhariya1, Yash Mangla2, Atika Chandra3
1Department of Botany, University of Delhi, New Delhi, India.
PloS one
|April 18, 2024
概括
性二态和资源分配 (RA) 在亚双植物H. rhamnoides ssp.中因性别而异. 土耳其斯坦尼亚. 环境因素影响了性别比率,而不是性变态或RA模式.
科学领域:
- 植物生殖策略 植物生殖策略
- 植物中的性二态.
- 进化生物学是进化的生物学.
背景情况:
- 双性,即不同个体中单独的男性和女性性别的发生,通过复杂的进化途径保持.
- 资源分配 (RA) 模式在性别之间可能有所不同,影响植物和生殖功能,并导致性二态.
- 研究具有中性现象型的物种,如亚双性植物,为性别比策略和进化轨迹提供了见解.
研究的目的:
- 调查H. rhamnoides ssp.亚二叶植物中的性二态和资源分配 (RA) 策略. 土耳其斯坦尼亚.
- 评估非生物因素对不同性别的性变态和RA模式的影响.
- 探索性二态和RA在具有多夫一妻制 (PGM) 个体的物种中的进化影响.
主要方法:
- 对H. rhamnoides ssp.进行实地研究. 土耳其斯坦尼卡在西喜马拉雅山脉的各种息地.
- 用各种植物性和生殖性特征的性别二态度指数量化性二态度的量化.
- 对雄性,雌性和多夫多妻植物 (PGM) 的资源分配 (RA) 模式的分析.
- 息地特征 (如土壤水分) 和性二态/RA模式之间的相关性分析.
主要成果:
- 观察到显著的两形性质,雄性在高度,树枝数量和鲜花产量方面表现出色,而雌性则表现出更高的叶子重量,数量和果实产量.
- 资源分配 (RA) 的差异在性别之间的生殖特征中更为明显;PGM植物表现出重叠的特征.
- 息地条件并没有显著影响性变态或RA模式的程度,但土壤湿度与二次性比相关 (有利于雌性).
结论:
- 观察到的两性变异和RA模式支持H. rhamnoides ssp.中的风传粉. 土耳其斯坦尼亚.
- 性二态度的程度表明两性之间有限的基因组分歧,表明从单质向二质的持续进化.
- 这种物种的资源分配动态似乎独立于息地资源的可用性,即使在极端环境中.
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