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Differences in functional traits among distinct populations of the plant invader Bunias orientalis
Journal of Plant Ecology ( IF 2.7 ) Pub Date : 2022-01-10 , DOI: 10.1093/jpe/rtac004
Blaise Binama 1 , Caroline Müller 1
Affiliation  

Abstract Aims Plants that expand their range and become invasive in other areas may shift several functional traits in response to specific environments. However, local conditions at the place of origin may have shaped the functional traits, which may to some extent remain visible in plants growing in new habitats. The present study aimed to explore the trait variation in different plant populations of native, invasive, and naturalized status of Bunias orientalis grown in common conditions in relation to the climatic conditions at their place of origin. Methods Seeds of B. orientalis were collected from twelve populations (four per status) in eight countries and grown under standardized conditions in a common field garden. The variation in several functional traits related to phenology, growth and reproduction was compared among status and among populations. Important Findings Phenology did not differ according to status. However, several plants of the native populations, originating from areas with low annual temperatures, did not start flowering. Plants of the invasive populations produced more leaves than natives, potentially indicating their vigor in building up vegetative biomass. Number and mass of silicles and other growth traits did not differ among status groups but varied among populations. Some of the variation in functional traits may be explained by long-term adaptations to local conditions at the areas of origin and genetic diversity, while other environmental factors differing in the novel environment may contribute to a high trait variation.

中文翻译:

植物入侵者东方布尼亚不同种群的功能性状差异

摘要 目标 扩大其范围并在其他区域具有侵入性的植物可能会因应特定环境而改变若干功能性状。然而,原产地的当地条件可能塑造了功能性状,这些功能性状在某种程度上可能在新栖息地生长的植物中仍然可见。本研究旨在探讨在普通条件下生长的东方布尼亚不同植物种群的原生、入侵和归化状态与其原产地气候条件相关的性状变异。方法 从 8 个国家的 12 个种群(每种状态 4 个)收集东方双歧杆菌种子,并在标准条件下在一个普通的田间花园中种植。比较了状态和种群之间与物候、生长和繁殖相关的几种功能性状的变化。重要发现 物候学并没有因地位而异。然而,来自年气温低地区的本地种群的几种植物并没有开始开花。入侵种群的植物比本地人产生更多的叶子,这可能表明它们在建立营养生物量方面的活力。硅粒的数量和质量以及其他生长特征在状态组之间没有差异,但在群体之间存在差异。一些功能性状的变异可以通过对原产地和遗传多样性的当地条件的长期适应来解释,
更新日期:2022-01-10
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