Results 91 to 100 of about 17,455 (256)

The role of hermaphrodites in the experimental evolution of increased outcrossing rates in Caenorhabditis elegans [PDF]

, 2014
Why most organisms reproduce via outcrossing rather than selfing is a central question in evolutionary biology. It has long ago been suggested that outcrossing is favoured when it facilitates adaptation to novel environments.
Chelo, Ivo M., Christine Goy, Carvalho, Sara, Chelo, Ivo M, Sara Carvalho, Goy, Christine, Henrique Teotónio, Ivo M Chelo, Teotónio, Henrique   +8 more
core   +1 more source

Pollinator efficiency, rather than bee decline, explains a shift to hummingbird pollination in tropical montane forests

New Phytologist, EarlyView.
Hummingbird pollination is a hallmark of American plant diversity and has long been thought to evolve in tropical mountains due to declining bee activity. Using sister species of Costus specialized on bees (C. kuntzei) and hummingbirds (C. wilsonii), we show that this shift is not driven by reduced bee visitation with elevation, but by greater ...
Pedro Juárez, Kathryn Gerhardt, Eden Hughes, Cecilia Girvin, Anise Dellith‐Moser, Dennis Tenorio, Annya Livak, Kathleen M. Kay   +7 more
wiley   +1 more source

Identification of Anther Length QTL and Construction of Chromosome Segment Substitution Lines of Oryza longistaminata

Plants, 2019
Life histories and breeding systems strongly affect the genetic diversity of seed plants, but the genetic architectures that promote outcrossing in Oryza longistaminata, a perennial wild species in Africa, are not understood.
Takayuki Ogami, Hideshi Yasui, Atsushi Yoshimura, Yoshiyuki Yamagata   +3 more
doaj   +1 more source

Assessment of Pollen Production, Pollen Viability, Autofertility and Paternal Success in Faba Bean (Vicia faba L.) for Better Exploitation of Grain Yield Heterosis

Plant Breeding, EarlyView.
ABSTRACT In animal‐pollinated plants, pollen dispersal depends on several plant and animal characteristics that can influence the paternal success of a plant. Paternal success affects the genetic contribution of a genotype to the next generation, which is relevant to plant breeding.
Lisa Brünjes, Wolfgang Link
wiley   +1 more source

Breeding system of diploid sexuals within the Ranunculus auricomus complex and its role in a geographical parthenogenesis scenario

Ecology and Evolution, 2020
The larger distribution area of asexuals compared with their sexual relatives in geographical parthenogenesis (GP) scenarios has been widely attributed to the advantages of uniparental reproduction and polyploidy.
Kevin Karbstein, Elisabeth Rahmsdorf, Salvatore Tomasello, Ladislav Hodač, Elvira Hörandl   +4 more
doaj   +1 more source

The Impact of Outcrossing on Yields of ‘Hass’ Avocado

, 2008
‘Hass’ avocado (Persea americana Mill.) is characterized by excessive flower and fruit abscission, resulting in extremely low fruit set. Low outcrossing rates might be a factor contributing to low yields.
Carol J. Lovatt, Vanessa E.T.M. Ashworth, Lovatt, Carol J., Lauren C. Garner, Garner, Lauren C., Ashworth, Vanessa E.T.M., Clegg, Michael T., Michael T. Clegg   +7 more
core   +1 more source

Additive Variance and Open‐Pollinated Progenies Under Mixed Mating

Plant Breeding, EarlyView.
ABSTRACT Open‐pollinated progeny tests are still widely interpreted as if all the individuals within a maternal family were true half‐sibs. However, in species with mixed mating systems, this assumption is often biologically unrealistic and may bias the estimation of the additive variance, narrow‐sense heritability and expected selection gains.
Evandro Vagner Tambarussi
wiley   +1 more source

Microsatellite Primers for Camissoniopsis cheiranthifolia (Onagraceae) and Cross-Amplification in Related Species

Applications in Plant Sciences, 2014
Premise of the study: We developed 24 nuclear microsatellite primers from an enriched genomic library for the Pacific coastal dune endemic Camissoniopsis cheiranthifolia to study the consequences of mating system differentiation, the genetics of species'
Adriana López-Villalobos, Karen E. Samis, Christopher G. Eckert   +2 more
doaj   +1 more source

Attraction of nocturnal scarab beetles by unusual floral volatiles in a Banksia (Proteaceae) with functionally diverse pollinators

Plant Biology, EarlyView.
Banksia attenuata (Proteaceae) attracts nocturnal scarab beetles with an unusual floral scent—the beetles pollinate the flower as they feed on pollen and nectar and mate on the inflorescences. Abstract Pollination by beetles has evolved multiple times in flowering plants but with relatively few plant species adapted specifically to pollination by ...
S. K. Wawrzyczek, B. Bohman, S. L. Krauss, I. M. Butler, G. R. Flematti, K. Farnier, S. E. Hoebee, R. A. Davis, R. D. Phillips   +8 more
wiley   +1 more source

Evolution of Outcrossing in Experimental Populations of Caenorhabditis elegans

PLoS ONE, 2012
Caenorhabditis elegans can reproduce exclusively by self-fertilization. Yet, males can be maintained in laboratory populations, a phenomenon that continues to puzzle biologists. In this study we evaluated the role of males in facilitating adaptation to novel environments.
Henrique Teotonio, Sara Carvalho, Diogo Manoel, Miguel Roque, Ivo M. Chelo   +4 more
openaire   +4 more sources