Variations in pollinator-mediated selection of floral traits across flowering times
Spatiotemporal variations in plant-pollinator interactions drive floral evolution and shape the diversity of flowers in angiosperms.However,the potential role of plant-pollinator interactions in driving floral differentiation across flowering times within a population has not been documented.In this study,we aimed to quantify the variations in pollinator-mediated selection of floral traits across different flowering times of Primula sikkimensis(an entomophilous plant)in two natural populations.The results demonstrated that plants were shorter and produced fewer flowers with larger sizes in the early flowering time than in the late flowering time.In early flowering time,pollinator types were fewer and visitation frequency was lower than in late flowering time,resulting in lower female fitness.Pollinator-mediated selection of floral traits varied with flowering time,and more floral traits received pollinator-mediated selection during early flowering time.These results highlight that temporal variation in plant-pollinator interactions may have a potential role in driving floral diversification within the population.
Yong-Peng Cha、Jie Zhang、Yin-Mei Ma、Zhao-Li Tong、Yun Wu、Lun Luo、Qing-Jun Li
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Yunnan Key Laboratory of Plant Reproductive Adaptation and Evolutionary Ecology,Institute of Biodiversity,School of Ecology and Environmental Science,Yunnan University,Kunming 650504,China
School of Architecture and Civil Engineering,Xihua University,Chengdu 610039,China
South-East Tibetan Plateau Station for integrated observation and research of alpine environment,Institute of Tibetan Plateau Research,Chinese Academy of Sciences,Beijing 100101,China
花进化 开花时间 传粉者介导的选择 锡金报春(Primula sikkimensis) 时间变化
国家自然科学基金-云南省人民政府联合基金国家自然科学基金Yunnan Provincial Department of Education Research Fund
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