Results 71 to 80 of about 949 (172)
A review of sexual strategies in Cannabis sativa L. under genomic and environmental controls
Agrosystems, Geosciences &Environment, Volume 8, Issue 1, March 2025.Abstract Cannabis sativa L. (marijuana, hemp) is one of the few dioecious angiosperm species with sex chromosomes. Along with other closely related genera from the family Cannabaceae, C. sativa exhibits monoecious (unisexual flowers at different locations within the individual) and dioecious (two sexes in separate individuals) populations.
Yousoon Baek, Daniela Vergara
wiley +1 more source
Genetic Subdivision and Variation in Selfing Rates Among Central American Populations of the Mangrove Rivulus, Kryptolebias marmoratus. [PDF]
, 2015 We used 32 polymorphic microsatellite loci to investigate how a mixed-mating system affects population genetic structure in Central American populations (N = 243 individuals) of the killifish Kryptolebias marmoratus (mangrove rivulus), 1 of 2 of the ...
Avise, John C +5 more
core +2 more sources
Evolution of the sex ratio and effective number under gynodioecy and androdioecy [PDF]
Theoretical Population Biology, 2017 AbstractWe address the evolution of effective number of individuals under androdioecy and gynodioecy. We analyze dynamic models of autosomal modifiers of weak effect on sex expression. In our zygote control models, the sex expressed by a zygote depends on its own genotype, while in our maternal control models, it depends on the genotype of its maternal
Uyenoyama, Marcy K., Takebayashi, Naoki
openaire +3 more sources
We need a multidimensional view of the plant reproduction continuum
Functional Ecology, Volume 39, Issue 3, Page 656-663, March 2025.Read the free Plain Language Summary for this article on the Journal blog. Abstract Sexual reproduction produces genetic variation, which is key for adaptations, whereas vegetative reproduction implies the replication and separation of ramets. Such a difference has deep implications for individual fitness and trait evolution and affects organismal ...
Angelino Carta +2 more
wiley +1 more source
A Genetic Test for Whether Pairs of Hermaphrodites Can Cross-Fertilize in a Selfing Killifish. [PDF]
, 2015 Kryptolebias marmoratus, a small killifish that lives in mangrove habitat from southern Florida to Brazil, is one of the planet's only known self-fertilizing hermaphroditic vertebrates.
Avise, John C +2 more
core +1 more source
, 2013 A new species of Ephedranthus from the Brazilian Atlantic Forest is described and illustrated, and a preliminary key to the species of Ephedranthus is presented.
Chatrou, Lars +2 more
core +2 more sources
Sex-specific lifespan and its evolution in nematodes [PDF]
, 2017 Differences between sexes of the same species in lifespan and aging rate are widespread. While the proximal and evolutionary causes of aging are well researched, the factors that contribute to sex differences in these traits have been less studied.
Ancell, Henry +1 more
core +1 more source
American Journal of Botany, Volume 111, Issue 8, August 2024.Abstract Premise Numerous studies have found a positive association between dioecy and polyploidy; however, this association presents a theoretical conflict: While polyploids are predicted to benefit from self‐reproduction for successful establishment, dioecious species cannot self‐reproduce.
Wilhelm H. A. Osterman +5 more
wiley +1 more source
Female sterility associated with increased clonal propagation suggests a unique combination of androdioecy and asexual reproduction in populations of Cardamine amara (Brassicaceae) [PDF]
, 2017 Background and Aims The coexistence of hermaphrodites and female-sterile individuals, or androdioecy, has been documented in only a handful of plants and animals.
Helling, Matthias +7 more
core
Choosy Males Could Help Explain Androdioecy in a Selfing Fish
The American Naturalist, 2013 Androdioecy (the coexistence of males and hermaphrodites) is considered a transitional state derived from pure hermaphroditism or dioecy, but the processes selecting for this rare breeding system are unclear, particularly in animals. In androdioecious species, the proportion of males in relation to hermaphrodites is usually so reduced that it is not ...
Amy, Ellison +3 more
openaire +4 more sources