Interactions between maternal provisioning and natural selection on seed mass fluctuate across heat waves

This repository contains two datasets from Gaspard et al. 2026.  FileA corresponds to seed and germination properties collected from crosses in a resurrection experiment, while FileB corresponds to seed and germination properties from a growth chamber experiment manipulating drought stress to simulate natural heat waves. Below is the abstract from the corresponding manuscript. Premise of study: Changing climates are leading to more frequent and severe heatwaves, potentially threatening plant populations. Both acclimation to stress and selection for heat-resistant phenotypes occur during heatwaves. However, plastic responses and selection do not necessarily interact cohesively – even producing responses in opposite directions, a phenomenon termed counter gradient variation – that could cause maladaptation in future generations.   Methods: Here we examine patterns of maternal provisioning and natural selection on seed mass and germination characteristics following two natural he..., , # Dataset for 'Interactions between maternal provisioning and natural selection on seed mass fluctuate across heat waves' --- Two data files are contained within this Dryad entry. FileA corresponds to seed and germination properties collected from crosses in a resurrection experiment, while FileB corresponds to seed and germination properties from a growth chamber experiment manipulating drought stress to simulate natural heat waves. `FileA`. This is a comma delimited file (fileA.csv) which contains seed mass and seed number data from 550 different Mimulus guttatus crosses from a resurrection experiment conducted in the University of Louisiana, Lafayette greenhouse as well as germination data for the progeny of each cross during a germination trial conducted within custom-walk-in growth chambers at UC-Berkeley. These experiments are described in detail in Gaspard et al. 2026. Briefly, seeds were collected from 12 different populations each year between 2018 and 2022. Field seeds were..., ,本数据集仓库包含Gaspard等人2026年研究的两套数据集。文件A对应复活实验（resurrection experiment）中杂交获得的种子与萌发特性数据，文件B对应生长箱实验中通过调控干旱胁迫以模拟自然热浪的种子与萌发特性数据。以下为对应学术论文的摘要内容。 研究背景：气候变化正导致热浪愈发频繁且强度加剧，可能对植物种群构成威胁。热浪期间，植物会同时发生胁迫驯化与耐热表型的定向选择。然而，表型塑性响应与定向选择未必协同作用——甚至可能产生方向相反的效应，这种现象被称为反梯度变异（counter gradient variation），可能导致未来世代的种群出现适应不良问题。 研究方法：本研究旨在探究两次自然[原文内容截断]热浪事件后，种子质量与萌发特性的母本资源分配模式与自然选择模式。 # 《母本资源分配与种子质量自然选择的相互作用随热浪波动》数据集 --- 本Dryad数据仓储（Dryad）条目包含两份数据文件。文件A对应复活实验中杂交获得的种子与萌发特性数据，文件B对应生长箱实验中通过调控干旱胁迫以模拟自然热浪的种子与萌发特性数据。 `文件A`：该逗号分隔值文件（fileA.csv）包含来自路易斯安那大学拉斐特分校温室开展的复活实验中，550组不同的沟酸浆（Mimulus guttatus）杂交组合的种子质量与种子数量数据，以及加州大学伯克利分校定制步入式生长箱内开展的萌发试验中，各杂交组合后代的萌发数据。相关实验细节详见Gaspard等人2026年的研究。简言之，研究团队于2018至2022年间每年从12个不同种群采集种子。野外采集的种子……