A seven-year study of flower-color polymorphism in a Mediterranean annual plant

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• 作者：Tamar Keasar ; ^{tkeasar@research.haifa.ac.il} ; Yoram Gerchman ; Simcha Lev-Yadun
• 关键词：Genetic bottleneck ; Honeybee ; Population dynamics ; Rainfall gradient ; Seed predation
• 刊名：Basic and Applied Ecology
• 出版年：2016
• 出版时间：December 2016
• 年：2016
• 卷：17
• 期：8
• 页码：741-750
• 全文大小：1090 K
• 卷排序：17

文摘

The frequencies of Silybum marianum’s two flower-color morphs show a latitudinal cline. Flowering color did not affect the production, predation and abortion of seeds. Insect pollinators slightly preferred the rare, white morph. Nonetheless, the white morph decreased in frequency during a 7-year survey. Population bottlenecks may contribute to this decrease through genetic drift.