heterostyly


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heterostyly

a combination of the morphological and physiological mechanisms that promote cross-pollination in flowering plants. Structurally, there are usually two flower forms (e.g. the ‘pin’ and ‘thrum’ forms of the primrose) which ensure that the pollen collected from the stamens of one type is deposited on the stigma of the other (see ENTOMOPHILY). There is also SELF-INCOMPATIBILITY between pollen and stigma from the same flower type, although there is compatibility between flowers of different types. Compare HOMOSTYLY.
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Heterostyly, population composition, and pollen flow in Hedyotis caerulea.
Heterostyly, homostyly and fecundity in Amsinckia spectabilis (Boraginaceae).
homotropicum is not controlled by the same alleles as the heterostyly in F.
A molecular phylogeny of the Lythraceae and inference of the evolution of heterostyly. Unpublished Ph.D.
Heterostyly and microgametophytic selection: the effect of pollen competition on sporophytic vigor in two distylous species.
The effectiveness of heterostyly in preventing illegitimate pollination in dish-shaped flowers.
On the basis of nutlet characteristics, floral venation and pigmentation, and the presence of heterostyly, C.
or heterostyly (see the section on "Heterostyly and Pollen
Other papers consider the adaptive significance of various floral features, such as flower lifespan, flower size dimorphisms, deceitfully nectarless flowers and heterostyly. The approaches are diverse, ranging from careful observation and measurement as in Barrett et al.'s study of Narcissus heterostyly, to the elegant field experiments of Schemske et al., to the use of electrophoretic markers in artificial arrays of plants by Snow et al., to the comparative and/or phylogenetic approach of Delph and Armbruster, to the mathematical models grounded in field work of Ashman and Schoen and of Harder and Barrett.
Sometimes, variation can be linked with heterostyly or coincides with infraspecific taxa.
The genetical architecture of heterostyly in Primula sinensis.