Avoiding sexual interference: herkogamy and dichogamy in style dimorphic flowers of Narcissus broussonetii (Amaryllidaceae)
نویسندگان
چکیده
منابع مشابه
Phenotypic integration in style dimorphic daffodils (Narcissus, Amaryllidaceae) with different pollinators.
Different pollinators can exert different selective pressures on floral traits, depending on how they fit with flowers, which should be reflected in the patterns of variation and covariation of traits. Surprisingly, empirical evidence in support of this view is scarce. Here, we have studied whether the variation observed in floral phenotypic integration and covariation of traits in Narcissus sp...
متن کاملAn experimental evaluation of self-interference in Narcissus assoanus: functional and evolutionary implications.
Floral traits that reduce self-pollination in hermaphroditic plants have usually been interpreted as mechanisms that limit the genetic consequences of self-fertilization. However, the avoidance of sexual conflict between female and male function (self-interference) may also represent an important selection pressure for the evolution of floral traits, particularly in self-incompatible species. H...
متن کاملIn the right place at the right time: Parnassia resolves the herkogamy dilemma by accurate repositioning of stamens and stigmas.
BACKGROUND AND AIMS Spatial (herkogamy) and temporal (dichogamy) separation of pollen presentation and stigma receptivity have been interpreted as reducing interference between male and female functions in hermaphroditic flowers. However, spatial separation leads to a potential conflict: reduced pollination accuracy, where pollen may be placed in a location on the pollinator different from the ...
متن کاملEvolutionary maintenance of stigma-height dimorphism in Narcissus papyraceus (Amaryllidaceae).
Stigma-height dimorphism is a sexual polymorphism in which plant populations are composed of two floral morphs that differ significantly in style length but not anther position. The morphs exhibit approach and reverse herkogamy, floral designs that in most species typically occur as monomorphic conditions. We investigated the floral biology of stigma-height dimorphism in the Mediterranean geoph...
متن کاملMicrosatellite markers for hoop-petticoat daffodils (Narcissus sect. Bulbocodii; Amaryllidaceae).
PREMISE OF THE STUDY Microsatellite markers were developed using hoop-petticoat daffodils (Narcissus sect. Bulbocodii; Amaryllidaceae) to aid in the taxonomic revision of the section, and to further evaluate their broad applicability for daffodil cultivar identification. METHODS AND RESULTS Three hundred fifty-one primer pairs were developed using a commercial service. Nineteen polymorphic an...
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ژورنال
عنوان ژورنال: AoB PLANTS
سال: 2019
ISSN: 2041-2851
DOI: 10.1093/aobpla/plz038