Selfing rates vary with floral display, pollinator visitation and plant density in natural populations of Mimulus ringens.
Selfing rates vary with floral display, pollinator visitation and plant density in natural populations of Mimulus ringens.
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DOI：
10.1111/jeb.13781
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发表时间：
2021-05
影响因子：
2.1
通讯作者：
Mitchell RJ
中科院分区：
文献类型：
--
作者：
Christopher DA;Karron JD;Semski WR;Smallwood PA;Trapnell DW;Mitchell RJ
两性开花植物居群内和居群间自交率的差异对生殖策略的进化和居群的遗传结构有重要影响。这种交配模式的种内变异可能反映了遗传和生态因素，但这些因素的相对重要性仍然知之甚少。在这里，我们探讨了如何在13个自然种群的多年生野花Mimulus ringens自交的影响（a）传粉者的访问，一个生态因素，和（B）花卉展示，一个性状的遗传成分，也响应环境变化。我们还探讨是否遗传为基础的花性状，包括herkogamy，影响自交。自交率在0.13-0.55之间存在显著的群体间差异。自交增加强烈和显着的花卉展示，以及种群内。自交也增加了网站与传粉者访问和低密度。然而，自交与花的形态没有相关性。总的来说，这些结果表明，传粉者的访问和花卉展示，两个因素相互作用，影响geitonogamous传粉者的运动，可以影响自交率。这项研究确定了可能发挥作用的机制，在维持种群之间的自交率变化。多年生野生花卉Mimulus ringens的自然种群之间的自交率差异很大。增加的自交与花的展示大小正相关，与传粉者的访问和植物密度负相关。这表明群体间自交率的变化反映了生态和遗传因素之间的相互作用。
Variation in selfing rates within and among populations of hermaphroditic flowering plants can strongly influence the evolution of reproductive strategies and the genetic structure of populations. This intraspecific variation in mating patterns may reflect both genetic and ecological factors, but the relative importance of these factors remains poorly understood. Here, we explore how selfing in 13 natural populations of the perennial wildflower Mimulus ringens is influenced by (a) pollinator visitation, an ecological factor, and (b) floral display, a trait with a genetic component that also responds to environmental variation. We also explore whether genetically based floral traits, including herkogamy, affect selfing. We found substantial variation among populations in selfing rate (0.13–0.55). Selfing increased strongly and significantly with floral display, among as well as within populations. Selfing also increased at sites with lower pollinator visitation and low plant density. However, selfing was not correlated with floral morphology. Overall, these results suggest that pollinator visitation and floral display, two factors that interact to affect geitonogamous pollinator movements, can influence the selfing rate. This study identifies mechanisms that may play a role in maintaining selfing rate variation among populations. Selfing rates vary widely among natural populations of the perennial wildflower Mimulus ringens. Increased selfing is positively correlated with floral display size and negatively correlated with pollinator visitation and plant density. This suggests that among‐population variation in selfing rate reflects the interaction between ecological and genetic factors.
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影响因子：
3.4
作者：
Cranmer, Louise;McCollin, Duncan;Ollerton, Jeff
通讯作者：
Ollerton, Jeff
影响因子：
2.7
作者：
DUKAS, R;REAL, LA
通讯作者：
REAL, LA
影响因子：
64.8
作者：
HARDER, LD;BARRETT, SCH
通讯作者：
BARRETT, SCH
影响因子：
3.4
作者：
Delmas CE;Cheptou PO;Escaravage N;Pornon A
通讯作者：
Pornon A
影响因子：
3.3
作者：
ECKERT, CG;BARRETT, SCH
通讯作者：
BARRETT, SCH