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- W1995263296 abstract "Abstract Distyly has been clearly confirmed in Polygonum hastato-sagittatum Mak, which is dimorphic for the intrinsic features of style height, anther height and a suite of ancillary pollen and stigma polymorphisms. The stigma width of long styled flowers is larger than that of short ones, and L-morph (long) stigmas have longer and less number of papillae than the S-morphs (short). Flowers produced significantly smaller pollen grains, but in greater numbers, in L-morph than in S-morph. In P. hastato-sagittatum , style-morph ratios were associated with population size: larger populations always exhibited 1:1 morph ratios, or were slightly L-biased, whereas smaller populations were often strongly L-biased, and only occasionally S-biased. Populations containing only the L-morph were occasionally found, but populations fixed for the S-morph were not observed. The biased style-morph ratios maybe result from morph-specific differences in assortative mating or artificial disturbance. The study supports the theory that evolution of heterostyly reduces the conflict that can occur in sexually monomorphic animal-pollinated species, achieving efficient cross-pollination but simultaneously avoiding self-interference between female and male sexual organs." @default.
- W1995263296 created "2016-06-24" @default.
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- W1995263296 date "2012-05-01" @default.
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- W1995263296 title "Floral morphology and breeding system in Polygonum hastato-sagittatum Mak. (Polygonaceae)" @default.
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- W1995263296 doi "https://doi.org/10.1016/j.flora.2012.01.012" @default.
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