ABR: Selection on Corolla Size By Flower Enemies--Impact on Male Fitness

ABR：花敌对花冠尺寸的选择--对男性健康的影响

基本信息

批准号：
0087412
负责人：
Candace Galen
金额：
$ 4.47万
依托单位：
University of Missouri-Columbia
依托单位国家：
美国
项目类别：
Standard Grant
财政年份：
2001
资助国家：
美国
起止时间：
2001-03-01 至 2003-02-28
项目状态：
已结题

来源：
https://www.nsf.gov/awardsearch/showAward?AWD_ID=0087412&HistoricalAwards=false
关键词：
ABR Selection Corolla Size Flower

项目摘要

0087412GalenThis project addresses the maintenance of genetically based variation in characteristics related to an organism's fitness. In flowering plants, flower size represents an important trait of this kind. Pollinators typically favor plants with large flowers. Yet in nearly all species that have been studied, genes for small flowers persist. The experiments described in the present study will test whether small-flowered plants persist in nature because their flowers are more cryptic to predators. In particular, the research will test whether escape from insect predation enhances the pollen donation success of small-flowered individuals. Research will focus on a model system for studying floral evolution in the wild, the alpine wildflower Polemonium viscosum. Alpine organisms are considered early warning systems for biotic effects of climate change. By monitoring the intensity of insect predation on flowers of a common alpine wildflower, this project provides data on the severity of insect damage to plants in alpine environments. Findings also have implications for optimizing fruit and seed yield in insect-pollinated crop species including strawberries, apples and cotton. Breeding programs aimed at maximizing pollinator attraction in these crops may have inadvertent negative effects on fruit production due to responses of flower predators.

0087412GALENTHIS项目解决了与生物体适应性相关的特征的基于遗传的变异。在开花植物中，花的大小代表了这种重要特征。传粉媒介通常有利于大花的植物。然而，在几乎所有研究的物种中，小花的基因持续存在。本研究中描述的实验将测试小花植物是否持续存在性质，因为它们的花朵对捕食者更加隐秘。特别是，该研究将测试是否逃离昆虫捕食是否会增强小花个体的花粉捐赠成功。研究将侧重于研究野外花卉进化的模型系统，即高山野花polemonium viscosum。高山生物被认为是气候变化的生物效应的预警系统。通过监测普通高山野花花的昆虫捕食强度，该项目提供了有关高山环境中昆虫损害的严重程度的数据。发现还对在包括草莓，苹果和棉花在内的昆虫授粉的农作物物种中优化果实和种子产量也有影响。旨在最大化这些农作物中授粉媒介吸引力的繁殖计划可能会因花掠食者的反应而对水果产生产生无意的负面影响。