Results 161 to 170 of about 949 (172)

HIGH MALE REPRODUCTIVE SUCCESS OF HERMAPHRODITES IN THE ANDRODIOECIOUS PHILLYREA ANGUSTIFOLIA

Evolution, 2002
Androdioecy, the coexistence of males and hermaphrodites within a population, is a rare breeding system, often considered as unlikely to evolve because of restrictive conditions for its maintenance. Phillyrea angustifolia, a wind-pollinated shrub, is one of the handful species reported to be androdioecious.
Christine, Vassiliadis, Pierre, Saumitou-Laprade, Jacques, Lepart, Frédérique, Viard   +3 more
openaire   +2 more sources

Androdioecy in the entomophilous tree Fraxinus ornus (Oleaceae)

New Phytologist, 1999
Androdioecy (the coexistence of two genders, cosexuals and males, in a single population) is a rare breeding system. In terms of functional gamete production, androdioecy has been reported in a small number of wind‐pollinated and insect‐pollinated species.
BERTRAND DOMMÉE, ALAIN GESLOT, JOHN D. THOMPSON, MAURICE REILLE, NICOLE DENELLE   +4 more
openaire   +1 more source

A Self-Incompatibility System Explains High Male Frequencies in an Androdioecious Plant

Science, 2010
The Making of the Males Most plants have a hermaphroditic mating system with flowers with both male and female function. However, in some cases, species are invaded by a sex-specific sterility factor. When female sterility factors invade a population, it results in a mating system called androdioecy.
Saumitou-Laprade, Pierre, Vernet, Ph., Vassiliadis, C., Hoareau, Y., G. De, Magny, Dommée, B., Lepart, J.   +6 more
openaire   +4 more sources

The maintenance of gynodioecy and androdioecy in angiosperms

Genetica, 1975
Algebraic models of gynodioecy show that the effects on the equilibrium sex ratio of the relative survival and seed production of the sexes and of inbreeding of male-fertile plants are identical for all genic modes of inheritance, provided that different genotypes among male-fertile plants (or among females) do not differ in average fitness.
openaire   +1 more source

The joint evolution and maintenance of self-incompatibility with gynodioecy or androdioecy

Journal of Theoretical Biology, 2015
Mating systems show two kinds of frequent transitions: from hermaphroditism to dioecy, gynodioecy or androdioecy, or from self-incompatibility (SI) to self-compatibility (SC). While models have mostly investigated these two kinds of transitions as independent, empirical observations suggest that, to some extent, they can evolve jointly.
van de Paer, Céline, Saumitou-Laprade, Pierre, Vernet, Philippe, Billiard, Sylvain   +3 more
openaire   +4 more sources

Evolutionary transitions among dioecy, androdioecy and hermaphroditism in limnadiid clam shrimp (Branchiopoda: Spinicaudata)

Journal of Evolutionary Biology, 2009
AbstractExaminations of breeding system transitions have primarily concentrated on the transition from hermaphroditism to dioecy, likely because of the preponderance of this transition within flowering plants. Fewer studies have considered the reverse transition: dioecy to hermaphroditism.
S C, Weeks, E G, Chapman, D C, Rogers, D M, Senyo, W R, Hoeh   +4 more
openaire   +2 more sources

Anatomical evidence for androdioecy in the clam shrimp Eulimnadia texana

Hydrobiologia, 1997
Recent genetic evidence suggests that the clam shrimp Eulimnadia texana exhibits androdioecy, a rare mating system. In this system, individuals are either hermaphrodites or males, pure females not being found. Through the use of light microscopy, this study provides anatomical evidence that egg-bearing individuals are, indeed, hermaphrodites.
Naida Zucker, Mark Cunningham, Henry P. Adams   +2 more
openaire   +1 more source

Selfish male-determining element favors the transition from hermaphroditism to androdioecy.

Evolution; international journal of organic evolution, 2015
According to the current, widely accepted paradigm, the evolutionary transition from hermaphroditism toward separate sexes occurs in two successive steps: an initial, intermediate step in which unisexual individuals, male or female, sterility mutants coexist with hermaphrodites and a final step that definitively establishes dioecy.
Billiard, Sylvain, Husse, Laëtitia, Lepercq, Pierre, Godé, Cécile, Bourceaux, Angélique, Lepart, Jacques, Vernet, Philippe, Saumitou-Laprade, Pierre   +7 more
openaire   +3 more sources

Androdioecy in Ranunculus ficaria ssp. ficaria (Ranunculaceae)

Ботанический журнал
Androdioecy was for the first time studied in detail in the fibrous-rooted herbaceous ephemeroid polycarpic plant Ranunculus ficaria ssp. ficaria in the Moscow Region during 2019–2023. It has been established that this subspecies produces two types of flowers: perfect and staminate (remains of carpels with reduced non-functioning stigmas are preserved).
openaire   +1 more source

Digest: The evolution of self-fertilization following dispersal in an androdioecious species

Evolution
Abstract Does dispersal facilitate the evolution of self-fertilization? McCauley et al. (2025) showed experimentally that dispersal from unfavorable conditions supports the evolution of self-fertilization in a nematode worm, thereby providing experimental evidence for Baker’s law. This finding is in line with previous theoretical studies
openaire   +2 more sources