Local adaptation is highly dependent on common garden conditions where seeds were propagated: Evidence from a 7-year study on a dominant alpine meadow species

IF 5.3 1区 环境科学与生态学 Q1 ECOLOGY
Dali Chen, Cunzhi Jia, Xiaohua Zhao, Zhen Yuan, Xinping Luo, Jinglong Bao, Hang Zhang, Zhuo Zhang, Xiaowen Hu
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引用次数: 0

Abstract

Abstract Image

当地适应高度依赖于种子传播的普通花园条件:来自一种优势高山草甸物种7年研究的证据
一般的园艺试验与互栽或播种试验相结合是评价植物局部适应性的常用方法。这种方法有效地减少了来自种子来源的母体环境的潜在影响。然而,在以往的研究中,不同的普通园林环境对当地适应性评估的影响受到的关注有限。为了研究不同的普通花园条件对当地适应性评估的影响,我们在两个不同的海拔进行了为期2年的普通花园试验,然后进行了为期5年的互惠播种试验。将低海拔和高海拔羊草居群的种子直接播种在普通园地试验中,为随后的互播试验繁殖种子。在两个实验中,我们测量了多种性状,包括幼苗出苗率、存活率、株高、地上生物量、生殖枝数和每个个体的种子数。这种综合方法使我们能够检查不同生长年龄和生命周期阶段的局部适应变化。无论种子是在低海拔或高海拔的普通花园中繁殖,原始低海拔种群在低海拔地点的表现始终优于外来种群,表明明显的局部适应性。相比之下,高海拔原始种群只有在低海拔普通园林中传播种子时才表现出局部适应性。长期实验表明,随着时间的推移,花生的局部适应能力逐渐下降。局部适应在种子数量上最为明显,在幼苗存活和生殖枝数量上的优势较小。在其他性状中没有发现局部适应的证据。合成。羊草的局部适应主要发生在种子生长初期,高度依赖于种子繁殖的常见园林条件。因此,在通过普通园林和互惠移植实验评估植物的本地适应性时,仔细考虑普通园林条件是至关重要的。
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来源期刊
Journal of Ecology
Journal of Ecology 环境科学-生态学
CiteScore
10.90
自引率
5.50%
发文量
207
审稿时长
3.0 months
期刊介绍: Journal of Ecology publishes original research papers on all aspects of the ecology of plants (including algae), in both aquatic and terrestrial ecosystems. We do not publish papers concerned solely with cultivated plants and agricultural ecosystems. Studies of plant communities, populations or individual species are accepted, as well as studies of the interactions between plants and animals, fungi or bacteria, providing they focus on the ecology of the plants. We aim to bring important work using any ecological approach (including molecular techniques) to a wide international audience and therefore only publish papers with strong and ecological messages that advance our understanding of ecological principles.
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