Mating system, sex ratio, and persistence of females in the gynodioecious shrub Daphne laureola L. (Thymelaeaceae)
نویسندگان
چکیده
منابع مشابه
Herbivores do not discriminate between leaves of female and hermaphrodite individuals of gynodioecious Daphne laureola (Thymelaeaceae)
The outcome of plant-animal interactions in dioecious plant species frequently depends on the gender of the plant individuals. It has even been proposed that these interactions could mediate the evolution of plant reproductive systems from hermaphroditism to dioecy. Gynodioecy is the most frequent intermediate stage in this evolutionary process, however, little is known about the relevance of g...
متن کاملPollination success across an elevation and sex ratio gradient in gynodioecious Daphne laureola.
Gynodioecy is a dimorphic breeding system in which hermaphrodite and female individuals coexist in populations. Sex ratio and gender-relative lifetime seed production determine the stability of gynodioecy, and both genetic and ecological factors may influence these parameters. I analyzed the consequences of variation in population sex ratio and site elevation for the relative pollination succes...
متن کاملDevelopment and evaluation of microsatellite markers for the gynodioecious shrub Daphne jezoensis (Thymelaeaceae)1
UNLABELLED PREMISE OF THE STUDY Ten microsatellite markers were developed and characterized in a gynodioecious summer-deciduous shrub, Daphne jezoensis, to facilitate studies of the evolution of gynodioecy in the species. • METHODS AND RESULTS We used a next-generation sequencing approach with the Ion Personal Genome Machine (PGM) system to identify and develop microsatellite markers with ...
متن کاملNeither vegetative nor reproductive advantages account for high frequency of male-steriles in southern Spanish gynodioecious Daphne laureola (Thymelaeaceae).
In gynodioecious species, male-steriles (termed "females" hereafter) usually exhibit some reproductive advantage over hermaphrodites that allow them to compensate for the loss of male reproductive function. This compensation can result from higher fecundity, vegetative outperformance, and/or lower inbreeding depression. In this study we compared vegetative and reproductive parameters of female ...
متن کاملExploring local borders of distribution in the shrub Daphne laureola: Individual and populations traits
Biogeographic models predict that marginal populations should be more geographically isolated and smaller than central populations, linked to more stressful conditions and likely also to a reduction in density of individuals, individual growth, survival and reproductive output. This variation in population features could have important consequences for different aspects of plant ecology such as...
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ژورنال
عنوان ژورنال: Heredity
سال: 2004
ISSN: 0018-067X,1365-2540
DOI: 10.1038/sj.hdy.6800550