Results 11 to 20 of about 21,182 (281)

Pollen Limitation and Reproductive Assurance in the Flora of the Coastal Atacama Desert [PDF]

open access: yesInternational Journal of Plant Sciences, 2010
Pollen limitation (PL) in plant populations is supposed to be particularly strong in variable pollinator environments. Here, we examined the extent of PL in the coastal Atacama Desert, where low and unpredictable rainfall drives large interannual variation in plant cover and pollinator abundances.
Alejandra V Gonzalez, Fernanda Perez
exaly   +6 more sources

Observations of Simultaneous Sperm Release and Larval Planulation Suggest Reproductive Assurance in the Coral Pocillopora acuta [PDF]

open access: yesFrontiers in Marine Science, 2019
Despite being an extensively studied group of corals, the reproductive biology of the scleractinian genus Pocillopora remains a mystery. Pocillopora acuta has been proposed to exhibit a mixed reproductive mode, sexually producing gametes (sperm and eggs)
Hillary A. Smith   +6 more
doaj   +2 more sources

Disentangling the role of herkogamy, dichogamy and pollinators in plant reproductive assurance

open access: yesPlant Ecology and Diversity, 2018
Background: Autonomous selfing can be favoured by reduced floral herkogamy, dichogamy and pollinator visitation.
Lorena Ashworth
exaly   +3 more sources

Unlocking tropical adaptation: novel flowering time genes implicate JA and ROS signaling in maize [PDF]

open access: yesBMC Plant Biology
Background Tropical maize germplasm offers a valuable resource of genetic diversity for temperate maize breeding programs but its utilization is often constrained by poor flowering adaptation under long-day photoperiods, which act as a major adaptive ...
Jiaguo Zhu   +6 more
doaj   +2 more sources

Reproductive assurance weakens pollinator-mediated selection on flower size in an annual mixed-mating species. [PDF]

open access: yesAnn Bot, 2019
Background and Aims In animal-pollinated plants, direct and indirect selection for large and small flowers in predominantly outcrossing and selfing species, respectively, is a common consequence of pollen limitation (PL).
Teixido AL, Aizen MA.
europepmc   +2 more sources

Phylogenetic Relatedness Determines Heterospecific Pollen–Pistil Compatibility and Reproductive Outcome in the Apocarpous Species Sagittaria trifolia (Alismataceae) [PDF]

open access: yesEcology and Evolution
Pollinator sharing among coflowering plants can reduce plant fitness through heterospecific pollen (HP) deposition. Compatible HP is expected to cause stronger reproductive interference, but the factors determining HP–pistil compatibility and its ...
Si‐Yan Zou   +5 more
doaj   +2 more sources

High lifetime inbreeding depression counteracts the reproductive assurance benefit of selfing in a mass-flowering shrub. [PDF]

open access: yesBMC Evol Biol, 2014
Background Decreases in mate and/or pollinator availability would be expected to affect the selective pressure on plant mating systems. An increase in self-fertilization may evolve to compensate for the negative effects of pollination failure.
Delmas CE   +3 more
europepmc   +2 more sources

EFFECTS OF REPRODUCTIVE COMPENSATION, GAMETE DISCOUNTING AND REPRODUCTIVE ASSURANCE ON MATING-SYSTEM DIVERSITY IN HERMAPHRODITES [PDF]

open access: yesEvolution, 2007
Hermaphroditism allows considerable scope for contributing genes to subsequent generations through various mixtures of selfed and outcrossed offspring. The fitness consequences of different family compositions determine the evolutionarily stable mating ...
Lawrence D. Harder   +2 more
openaire   +2 more sources

Implementation of Quality Assurance in Reproductive & Child Health Services Project in Maharashtra State

open access: yesNational Journal of Community Medicine, 2019
Introduction: Globally ‘quality health care’ and particularly the domain of Reproductive and Child Health (RCH) services attract substantial attention. United Nations Population Fund (UNFPA) implemented Quality Assurance in Reproductive and Child Health
Prakash P Doke, Abhijit R Khanvilkar
doaj   +1 more source

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