Fruit-, seed- and seedling-related fitness traits after self-pollination and two types of cross-pollination in regionally and locally common and rare plant species

Local abundance and regional distribution are two aspects of a species’ rarity. They are suggested to differentially alter genetic processes in plants: Locally rare species are hypothesized to suffer less from inbreeding and outbreeding than locally common species, thanks to genetic purging through long inbreeding histories and weaker local adaptations, respectively. Regionally rare species are hypothesized to be more susceptible to outbreeding, but less to inbreeding, compared to regionally common ones, due to small and declining range size. While this has major implications for plant conservation practices, we lack evidence and general understanding of how breeding effects on a plant’s early life fitness are related to its local and regional rarity. To investigate effects of inbreeding and outbreeding on plants’ early fitness, we performed self-, within- and between-population pollinations in eight pairs of closely related species differing in regional and local rarity. To avoid biase..., Data were collected from self-, within- and between-population pollinations in eight pairs of closely related species differing in regional and local rarity, habitat resource-availability, growth, and competitive strategies. , , # Fruit-, seed- and seedling-related fitness traits after self-pollination and two types of cross-pollination in regionally and locally common and rare plant species

[https://doi.org/10.5061/dryad.mw6m90658](https://doi.org/10.5061/dryad.mw6m90658)

Three datasets are provided here:

Pollination_crosses.csv: Data of the Pollination experiment for the following fitness-related traits: Number of seeds (i.e. seed set), Mean number of seeds (i.e Mean seed set), Total seed mass (i.e. Total seed weight) and Germination percentage (i.e. Germination rate or Germination ratio). This dataset was created by Sarah Bürli with data collected from a pollination experiment done in 2018-2021, where self-pollinations, between seed-family cross-pollinations and between population cross-pollinations were performed by hand.

Pollini_fruit_ratio.csv: Data of the Pollination experiment for the fitness-related trait Developed fruit ratio resulting from hand pollinations. This dataset was created by Sarah Bürl...

局域丰度与区域分布是物种稀有性的两个维度，二者被认为会对植物的遗传过程产生差异化影响：局域稀有种相较于局域常见种，因长期近交（inbreeding）历史介导的遗传清除（genetic purging）效应以及较弱的局域适应性，分别在近交衰退（inbreeding depression）与远交衰退（outbreeding depression）中受到的危害更低。区域稀有种相较于区域常见种，因分布范围狭小且持续缩减，被推测更易受到远交衰退的影响，但近交衰退的风险更低。尽管该假说对植物保护实践具有重要指导意义，但目前我们仍缺乏相关证据，也尚未明确植物早期生活史适合度（fitness）的繁育效应与其局域和区域稀有性之间的关联机制。为探究近交与远交对植物早期适合度的影响，本研究针对8对区域与局域稀有性存在差异的近缘物种，开展了自交、种群内授粉（within-population pollination）以及种群间授粉（between-population pollination）实验。为避免实验偏差，本研究收集了8对区域与局域稀有性、生境资源可获得性、生长及竞争策略存在差异的近缘物种的自交、种群内杂交与种群间杂交实验数据。# 区域与局域常见及稀有植物物种在自交与两类杂交授粉后的果实、种子及幼苗相关适合度性状
相关DOI：https://doi.org/10.5061/dryad.mw6m90658

本数据集包含以下三个文件：
Pollination_crosses.csv：包含授粉（pollination）实验中与适合度相关的如下性状数据：种子数量（即结籽数，seed set）、平均种子数（即平均结籽数，mean seed set）、种子总质量（即种子总重量，total seed mass）以及发芽率（即萌发速率，Germination rate或萌发比率，Germination ratio）。该数据集由Sarah Bürli基于2018-2021年开展的人工授粉实验数据构建，实验中完成了自交、种子家系间杂交（between seed-family cross-pollination）以及种群间杂交的人工授粉操作。
Pollini_fruit_ratio.csv：包含人工授粉实验所得的与适合度相关的性状——坐果率（developed fruit ratio）的相关数据。该数据集由Sarah Bürli创建，原文此处内容存在截断。