Results 21 to 30 of about 352 (126)

Darwin's ‘mystery of mysteries’: the role of sexual selection in plant speciation

Biological Reviews, Volume 98, Issue 6, Page 1928-1944, December 2023., 2023
ABSTRACT Sexual selection is considered one of the key processes that contribute to the emergence of new species. While the connection between sexual selection and speciation has been supported by comparative studies, the mechanisms that mediate this connection remain unresolved, especially in plants. Similarly, it is not clear how speciation processes
Mohammadjavad Haghighatnia, Antonin Machac, Roswitha Schmickl, Clément Lafon Placette   +3 more
wiley   +1 more source

Widespread functional androdioecy in Mercurialis annua L. (Euphorbiaceae) [PDF]

Biological Journal of the Linnean Society, 1997
The widespread coexistence of male and monoecious (cosexual) plants in Spanish, Portuguese and Moroccan populations of Mercurialis annua, an annual wind-pollinated ruderal, represents an important case of functional androdioecy, a rare breeding system in plants and animals. In M.
openaire   +3 more sources

Reproductive aspects and pollination biology in endoparasitic Pilostyles thurberi (Apodanthaceae)

Plant Species Biology, Volume 38, Issue 2, Page 40-53, March 2023., 2023
We studied pollination and reproductive strategies of the endoparasitic plant Pilostyles thurberi. The reproductive strategy, floral rewards, pollination system, and variation of their sexual flower arrangement were recorded. This endoparasite presents differences in reproductive success between different sites. Abstract Biotic pollination is typically
Pactli F. Ortega‐González, Sandra Rios‐Carrasco, María C. Mandujano, Daniel Sánchez, Sonia Vázquez‐Santana   +4 more
wiley   +1 more source

Genetic potential for changes in breeding systems: Predicted and observed trait changes during artificial selection for male and female allocation in a gynodioecious species

American Journal of Botany, Volume 109, Issue 11, Page 1918-1938, November 2022., 2022
Abstract Premise Evolution of separate sexes from hermaphroditism often proceeds through gynodioecy, but genetic constraints on this process are poorly understood. Genetic (co‐)variances and between‐sex genetic correlations were used to predict evolutionary responses of multiple reproductive traits in a sexually dimorphic gynodioecious species, and ...
Diane R. Campbell, Ann K. Sakai, Stephen G. Weller, Theresa M. Culley, Amy K. Dunbar‐Wallis, Allen M. Andres, Tiffany G. Wong, Tam Dang, Bryan Au, Mickey Ku, Andrea R. Marcantonio, Paul J. Ngo, Andrew A. Nguyen, My Hanh Tran, Quoc‐Phong Tran   +14 more
wiley   +1 more source

Lonesome plants: How isolation affects seed set of a threatened dioecious shrub. [PDF]

Ecol Evol
Plant reproductive failure is a critical concern for conserving species that typically have low‐density and sparse populations. This study confirms that Vasconcellea chilensis is dioecious and obligate outcrosser. Significant spatial clustering was observed in female and male plants, and a significant spatial attraction between the sexes.
García-Guzmán P, Carvajal DE, Carozzi-Figueroa G, Loayza AP.   +3 more
europepmc   +2 more sources

Duodichogamy and androdioecy in the Chinese Phyllanthaceae Bridelia tomentosa [PDF]

American Journal of Botany, 2007
Flowering plants commonly separate male and female function in time, but rarely are the two stages synchronized within and among individuals. One such temporal mating system is duodichogamy in which each plant produces two batches of male flowers that are temporally separated by a batch of female flowers, with within‐individual synchrony and among ...
Luo, Shixiao, Zhang, Dianxiang, Renner, Susanne S.   +2 more
openaire   +3 more sources

Stable persistence of relict populations involved evolutionary shifts of reproductive characters in the genus Tanakaea (Saxifragaceae)

Journal of Systematics and Evolution, Volume 60, Issue 6, Page 1405-1416, November 2022., 2022
Relict species is assumed to show strong conservatism of ecology and morphology with stable population sizes over millions of years. We investigated the phylogeographic history and tested the evolutionary stasis hypothesis using the Tertiary relict species, genus Tanakaea (Saxifragaceae), which shows remarkable disjunct distribution between mainland ...
Daiki Takahashi, Yuji Isagi, Pan Li, Ying‐Xiong Qiu, Hiroaki Setoguchi, Yoshihisa Suyama, Ayumi Matsuo, Yoshihiro Tsunamoto, Shota Sakaguchi   +8 more
wiley   +1 more source

Male frequency in Caenorhabditis elegans increases in response to chronic irradiation

Evolutionary Applications, Volume 15, Issue 9, Page 1331-1343, September 2022., 2022
Abstract Outcrossing can be advantageous in a changing environment because it promotes the purge of deleterious mutations and increases the genetic diversity within a population, which may improve population persistence and evolutionary potential. Some species may, therefore, switch their reproductive mode from inbreeding to outcrossing when under ...
Loïc Quevarec, Denis Réale, Elizabeth Dufourcq‐Sekatcheff, Clément Car, Olivier Armant, Nicolas Dubourg, Christelle Adam‐Guillermin, Jean‐Marc Bonzom   +7 more
wiley   +1 more source

Sex-Differential Herbivory in Androdioecious Mercurialis annua

PLoS ONE, 2011
Males of plants with separate sexes are often more prone to attack by herbivores than females. A common explanation for this pattern is that individuals with a greater male function suffer more from herbivory because they grow more quickly, drawing more heavily on resources for growth that might otherwise be allocated to defence.
Julia Sánchez Vilas, John R Pannell
openaire   +4 more sources

Inbreeding Depression in a Self-Compatible, Androdioecious Crustacean, Eulimnadia texana [PDF]

Evolution, 1999
The observation that offspring produced by the mating of close relatives are often less fit than those produced by matings between unrelated individuals (i.e., inbreeding depression) has commonly been explained in terms of the increased probability of expressing deleterious recessive alleles among inbred offspring (the partial dominance model).
Stephen C, Weeks, Vivien, Marcus, Bobbi R, Crosser   +2 more
openaire   +2 more sources