期刊
OIKOS
卷 118, 期 11, 页码 1752-1759出版社
WILEY-BLACKWELL PUBLISHING, INC
DOI: 10.1111/j.1600-0706.2009.17626.x
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资金
- Center for Rationality
- Inst. for Advanced Studies at the Hebrew Univ.
Plants that do not develop flags probably benefit from the flag signals displayed by their neighbors, without bearing the costs of signal production. Greenhouse-grown S. viridis plants allocated a low proportion of their biomass to flags. Plants grown under water stress did not reduce biomass allocation to flags as compared to irrigated controls. Water loss rates of picked flags were lower than those of picked leaves. These findings suggest that the expenses of flag production and maintenance are modest, reducing the selective advantage of individuals that do not carry flags. We discuss additional potential evolutionary mechanisms that may select for flag production.
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