Results 31 to 40 of about 4,773,873 (317)

Self-pollination by sliding pollen in Caulokaempferia coenobialis (Zingiberaceae) [PDF]

open access: yes, 2005
Caulokaempferia coenobialis (Zingiberaceae) forms dense populations on steep cliffs in shady, humid monsoon forests in south China. It produces few consecutively opening bright yellow flowers that are 3 cm long and oriented parallel to the ground.
Chen, Zhongyi   +3 more
core   +1 more source

Why Self-fertilizing Plants Still Exist in Wild Populations: Diversity Assurance through Stress-Induced Male Sterility May Promote Selective Outcrossing and Recombination

open access: yesAgronomy, 2020
Climate change creates challenges for wild species, but plants have survived and adapted to similar changes in their evolutionary past. Most plants were originally outcrossing, one theoretical genetic reason being that self-fertilization does not create ...
Maarten van Ginkel   +1 more
doaj   +1 more source

Differential expression of conserved germ line markers and delayed segregation of male and female primordial germ cells in a hermaphrodite, the leech helobdella. [PDF]

open access: yes, 2013
In sexually reproducing animals, primordial germ cells (PGCs) are often set aside early in embryogenesis, a strategy that minimizes the risk of genomic damage associated with replication and mitosis during the cell cycle.
Cho, Sung-Jin   +2 more
core   +2 more sources

Hermaphroditism in Marijuana (Cannabis sativa L.) Inflorescences – Impact on Floral Morphology, Seed Formation, Progeny Sex Ratios, and Genetic Variation

open access: yesFrontiers in Plant Science, 2020
Cannabis sativa L. (hemp, marijuana) produces male and female inflorescences on different plants (dioecious) and therefore the plants are obligatory out-crossers.
Zamir K. Punja, Janesse E. Holmes
doaj   +1 more source

The effect of sheltered load on reproduction in Solanum carolinense, a species with variable self-incompatibility [PDF]

open access: yes, 2009
In previous studies, we have investigated the strength of self-incompatibility (SI) in Solanum carolinense, a highly successful weed with a fully functional SI system that inhabits early successional and other disturbed habitats.
Keser, L.H.   +2 more
core   +2 more sources

Création et étude de lignées chez le Pinot noir (Vitis vinifera L.)

open access: yesOENO One, 1991
L'objectif est l'obtention de génotypes de type « lignée », capables de transmettre à une descendance sexuée les caractères les plus utiles tels que la couleur de la baie dans le cas d'une variété de cuve comme le Pinot noir.
A. Bronner, J. Oliveira
doaj   +1 more source

Predicting the dyadic coping through self-esteem among infertile couples undergoing in vitro fertilization and embryo transfer: An actor-partner interdependence model

open access: yesFrontiers in Psychology, 2023
BackgroundThe population of infertile couples receiving in vitro fertilization and embryo transfer in China is increasing gradually. The association of self-esteem and dyadic coping of infertile couples undergoing in vitro fertilization and embryo ...
Lihong Zhang   +7 more
doaj   +1 more source

Model of phenotypic evolution in hermaphroditic populations [PDF]

open access: yes, 2013
We consider an individual based model of phenotypic evolution in hermaphroditic populations which includes random and assortative mating of individuals.
Rudnicki, Ryszard, Zwoleński, Paweł
core   +2 more sources

Sex morphs and invasiveness of a fleshy-fruited tree in natural grasslands from Argentina [PDF]

open access: yes, 2017
Invasiveness has usually been studied as a species-level attribute; nevertheless, phenotypic differences between individuals in a population can lead to significant variations in colonization ability.
Amodeo, Martín Raúl   +1 more
core   +1 more source

Experimental confirmation of protandric simultaneous hermaphroditism in a Caridean shrimp outside of the genus Lysmata [PDF]

open access: yes, 2008
Caridean shrimps display a variety of sexual systems including gonochorism and various forms of protandry but rarely simultaneous hermaphroditism. Protandric simultaneous hermaphroditism (PSH) has thus far only been demonstrated in the genus Lysmata. The
Laubenheimer, Helio, Rhyne, Andrew L.
core   +2 more sources

Home - About - Disclaimer - Privacy