Solving the puzzle of mirror-image flowers |
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| Authors: | Jesson Linley K Barrett Spencer C H |
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| Institution: | Department of Botany, University of Toronto, Ontario, Canada. |
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| Abstract: | Enantiostyly is a plant sexual polymorphism in which female sex organs are deflected to the left or right -- resulting in 'mirror-image' flowers -- but, although it occurs in at least a dozen unrelated families of flowering plants, its adaptive significance has been unclear. Here we show that a mendelian locus governs the inheritance of style orientation and that this curious form of sexual asymmetry functions to promote cross-pollination in bee-pollinated plants. |
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