Pollination context alters female advantage in gynodioecious Silene vulgaris
نویسندگان
چکیده
منابع مشابه
When is it worth being a self-compatible hermaphrodite? Context-dependent effects of self-pollination on female advantage in gynodioecious Silene nutans
In gynodioecious plant species with nuclear-cytoplasmic sex determination, females and hermaphrodites plants can coexist whenever female have higher seed fitness than hermaphrodites. Although the effect of self fertilization on seed fitness in hermaphrodites has been considered theoretically, this effect is far from intuitive, because it can either increase the relative seed fitness of the fema...
متن کاملInbreeding effects on progeny sex ratio and gender variation in the gynodioecious Silene vulgaris (Caryophyllaceae).
In gynodioecious species, sex expression is generally determined through cytoplasmic male sterility genes interacting with nuclear restorers of the male function. With dominant restorers, there may be an excess of females in the progeny of self-fertilized compared with cross-fertilized hermaphrodites. Moreover, the effect of inbreeding on late stages of the life cycle remains poorly explored. H...
متن کاملMitochondrial DNA diversity, population structure, and gender association in the gynodioecious plant Silene vulgaris.
A highly variable mitochondrial DNA (mtDNA) restriction fragment length polymorphism (RFLP) locus is used to assess the population structure of mitochondrial genomes in the gynodioecious plant Silene vulgaris at two spatial scales. Thirteen mtDNA haplotypes were identified within 250 individuals from 18 populations in a 20-km diameter region of western Virginia. The population structure of thes...
متن کاملFactors affecting relative seed fitness and female frequency in a gynodioecious species, Silene acaulis
Sex-ratio variation is common among gynodioecious species. One argument predicts that when sex is determined by a combination of nuclear and cytoplasmic factors, the frequency of females will be determined by genetic rather than ecological factors. An alternative argument suggests that the relative seed fitness of the female and hermaphroditic morphs will control female frequency. Hence, sex-ra...
متن کاملVariation in the intensity of inbreeding depression among successive life-cycle stages and generations in gynodioecious Silene vulgaris (Caryophyllaceae).
Inbreeding depression is one of the hypotheses explaining the maintenance of females within gynodioecious plant populations. However, the measurement of fitness components in selfed and outcrossed progeny depends on life-cycle stage and the history of inbreeding. Comparative data indicate that strong inbreeding depression is more likely to occur at later life-cycle stages. We used hermaphrodite...
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ژورنال
عنوان ژورنال: Journal of Evolutionary Biology
سال: 2017
ISSN: 1010-061X,1420-9101
DOI: 10.1111/jeb.13203