Results 41 to 50 of about 948,228 (268)

The historical biogeography of range expansion predicts spatial patterns in reproductive assurance

bioRxiv
Plant reproductive assurance describes the ability of a plant to successfully reproduce in an environment that is potentially devoid of conspecifics and/or pollinators.
Mackenzie Urquhart-Cronish, Ken A. Thompson, A. Angert   +2 more
semanticscholar   +1 more source

Geographic variation in reproductive assurance of Clarkia pulchella

Oecologia, 2019
Climate can affect plant populations through direct effects on physiology and fitness, and through indirect effects on their relationships with pollinating mutualists.
M. Bontrager, C. Muir, A. Angert
semanticscholar   +1 more source

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

, 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., Mena-Ali, J.I., Stephenson, A.G.   +2 more
core   +2 more sources

Does reproductive assurance explain the incidence of polyploidy in plants and animals?

New Phytologist, 2019
A broad difference in the frequencies of plant and animal polyploidy (whole-genome duplication, WGD) has been recognized since the early 20th century (e.g., Gates, 1924; Dobzhansky, 1937; Stebbins, 1950), and is generally supported by numerous studies of
J. Spoelhof, R. Keeffe, S. McDaniel
semanticscholar   +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

Agronomy, 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, Ronald C. H. Flipphi   +1 more
doaj   +1 more source

Reviving egalitarianism in the Global Transformation: Building occupational security [PDF]

, 2008
The world is in the midst of a Global Transformation, reflecting the painful creation of a global market society. Globalization was the disembedded phase, in which inequalities and insecurities multiplied as national systems of regulation, social ...
Standing, Guy
core   +1 more source

High lability of sexual system over 250 million years of evolution in morphologically conservative tadpole shrimps

BMC Evolutionary Biology, 2013
Background Sexual system is a key factor affecting the genetic diversity, population structure, genome structure and the evolutionary potential of species.
Mathers Thomas C, Hammond Robert L, Jenner Ronald A, Zierold Thorid, Hänfling Bernd, Gómez Africa   +5 more
doaj   +1 more source

Radiotherapy Delivery in Deep Inspiration for Pediatric Patients—Final Results of the Phase II Feasibility Study TEDDI

Pediatric Blood &Cancer, EarlyView.
Abstract Introduction The TEDDI trial tested the feasibility and reproducibility of deep‐inspiration breath‐hold (DIBH) in pediatric patients referred for radiotherapy. This report presents final results, including patient‐reported outcomes (PRO) and dosimetric comparison of DIBH and free‐breathing (FB).
Daniella Elisabet Østergaard, Anni Young Lundgaard, Laura Ann Rechner, Danijela Dejanovic, Hanne Krogh Rose, Jolanta Hansen, Leila Vaalavirta, Miia Mokka, Marianne Aznar, Peder Skov Wehner, Lisa Lyngsie Hjalgrim, Maja Vestmø Maraldo   +11 more
wiley   +1 more source

Dactyliform appendage contributes to delayed selfing in the diminutive orchid Stigmatodactylus sikokianus

Plants, People, Planet
Societal Impact Statement Understanding plant reproductive strategies is vital for conserving endangered species. This study reveals a novel self‐pollination mechanism in the diminutive orchid Stigmatodactylus sikokianus, facilitated by the movement of a
Kenji Suetsugu
doaj   +1 more source

Pollinator availability, mating system and variation in flower morphology in a tropical savanna tree

Acta Botânica Brasílica
Widely distributed organisms face different ecological scenarios throughout their range, which can potentially lead to micro-evolutionary differentiation at specific localities.
André Rodrigo Rech, Leonardo Ré Jorge, Jeff Ollerton, Marlies Sazima   +3 more
doaj   +1 more source