Distyly prevents self-fertilization and fertilization between like individuals, thus facilitating cross-pollination between pin and thrum morphs and, ultimately, genetic diversity within the species.
Rose breeders first strip immature blooms of their outer petals and pollen-laden anthers to avoid self-fertilization.
(Gr. proteros, fore; gyne, female) development of the female organs before the appearance of the corresponding male products - thus inhibiting self-fertilization.pseudolamina search for term- n.
  
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