Abstract:Observations of the habitats and relative flowering of a Clarkia species with hairy flower buds and several with hairless flower buds led to the hypothesis that long hairs on flower buds regulate bud temperature. This hypothesis predicts that hairless buds would be warmer and develop faster than hairy buds, which would be cooler, develop more slowly, and avoid high temperature stress. The hypothesis was tested by comparing flower bud growth rates and temperatures in three genetically similar biotypes of Clarki… Show more
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