The influence of demography and local mating environment on sex ratios in a wind-pollinated dioecious plant
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منابع مشابه
The influence of demography and local mating environment on sex ratios in a wind-pollinated dioecious plant
Negative frequency-dependent selection should result in equal sex ratios in large populations of dioecious flowering plants, but deviations from equality are commonly reported. A variety of ecological and genetic factors can explain biased sex ratios, although the mechanisms involved are not well understood. Most dioecious species are long-lived and/or clonal complicating efforts to identify st...
متن کاملEnvironmental influence on primary sex ratio in a dioecious plant.
The proximity of mates can influence mating opportunities and the quantity and quality of offspring, especially in dioecious plant species. Progeny sex ratios modulated by environmental conditions is one of the most radical ways in which offspring quality may be influenced, yet it has rarely been reported in plants. A mechanism proposed to influence progeny sex ratios in dioecious plants involv...
متن کاملReversal of height dimorphism promotes pollen and seed dispersal in a wind-pollinated dioecious plant.
Variation in the timing of reproductive functions in dioecious organisms may result in adaptive changes in the direction of sexual dimorphism during the breeding season. For plants in which both pollen and seeds are wind-dispersed, it may be advantageous for male plants to be taller when pollen is dispersed and female plants to be taller when seeds are dispersed. We examined the dynamics of hei...
متن کاملdispersal in a wind-pollinated dioecious plant Reversal of height dimorphism promotes pollen and seed
, 245-248 first published online 2 November 2011 8 2012 Biol. Lett. Melinda Pickup and Spencer C. H. Barrett dispersal in a wind-pollinated dioecious plant Reversal of height dimorphism promotes pollen and seed References http://rsbl.royalsocietypublishing.org/content/8/2/245.full.html#ref-list-1 This article cites 11 articles, 1 of which can be accessed free Email alerting service here right-h...
متن کاملcritical period effects in foreign language learning:the influence of maturational state on the acquisition of reading,writing, and grammar in english as a foreign language
since the 1960s the age effects on learning both first and second language have been explored by many linguists and applied linguists (e.g lennerberg, 1967; schachter, 1996; long, 1990) and the existence of critical period for language acquisition was found to be a common ground of all these studies. in spite of some common findings, some issues about the impacts of age on acquiring a second or...
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ژورنال
عنوان ژورنال: Ecology and Evolution
سال: 2013
ISSN: 2045-7758
DOI: 10.1002/ece3.465