Results 61 to 70 of about 17,455 (256)

Etude par les isozymes de la pollinisation libre de génotypes d'hévéas sauvages (Hevea brasiliensis Muell. Arg.) en verger à graines [PDF]

Biotechnologie, Agronomie, Société et Environnement, 2006
Survey of the open pollination by isozymes in a wild rubber trees (Hevea brasiliensis Muell. Arg.) seeds orchard. The Côte dʼIvoire has a wild rubber tree population for which an improvement in a seeds orchard is suggested by open pollination.
Clément-Demange A., Fanjavola M., N'Guetta ASP., Lidah YJ., Rodier GM.   +4 more
doaj  

New Temperature Sensitive Genic Male Sterile Lines with Better Outcrossing Ability for Production of Two-Line Hybrid Rice

Rice Science, 2015
An investigation was carried out with three newly developed temperature sensitive genic male sterile (TGMS) lines for their floral traits, seed production potential and outcrossing ability in ten cross combinations. In the TGMS lines, fertile pollens had
S.J. Arasakesary, S. Manonmani, R. Pushpam, S. Robin   +3 more
doaj   +1 more source

Limits to genetic rescue by outcross in pedigree dogs [PDF]

Journal of Animal Breeding and Genetics, 2018
SummaryOutcrossing should reduce inbreeding levels and associated negative effects in highly inbred populations. In this study, we investigated the effectiveness of different outcrossing schemes using computer simulations. The inbreeding rate estimated for a 25‐year period of 2.1% per generation in a highly inbred dog breed reduced to 1.8% when a ...
Windig, J.J., Doekes, H.P.
openaire   +2 more sources

Sexual reproduction in invasive Japanese knotweed (Reynoutria japonica) in south Sweden

Nordic Journal of Botany, EarlyView.
To understand the potential for northward expansion of knotweeds into currently uninvaded regions, it is crucial to assess the potential for sexual reproduction alongside the ongoing vegetative spread. For that reason, we tested viability in Reynoutria japonica seeds in south Sweden, a region where viable seeds had not been previously reported ...
Tina D'Hertefeldt, Annette Andersson, Ellen Andersson, Bea Nerer, Mattias West, Alexander Zimmerman   +5 more
wiley   +1 more source

How and When Does Outcrossing Occur in the Predominantly Selfing Species Medicago truncatula?

Frontiers in Plant Science, 2021
Empirical studies on natural populations of Medicago truncatula revealed selfing rates higher than 80%, but never up to 100%. Similarly, several studies of predominantly selfing species show variability in the level of residual outcrossing between ...
Margaux Jullien, Joëlle Ronfort, Laurène Gay   +2 more
doaj   +1 more source

Picea omorika is a self-fertile but outcrossing conifer [PDF]

Heredity, 1992
Outcrossing rates were estimated in a natural Yugoslavian and in a cultivated Finnish population of Serbian spruce [Picea omorika (Pančić) Purk.]. The outcrossing rates in the cultivated stand in two years were 0.98 ±0.03 and 1.02 ±0.04, and in the natural stand 0.84 ±0.05.
Helmi, Kuittinen, Outi, Savolainen
openaire   +2 more sources

Elevated outcrossing rates in populations harboring variation.

, 2016
Outcrossing rates over generations of nematode evolution for populations of nematodes with (A) natural genetic variation (N) and mutagenesis-induced variation (M1 and M2) and (B) no initial variation (I1 and I2) when exposed to either live or heat-killed
Raymond C. Parrish II (2633716), McKenna J. Penley (2633713), Levi T. Morran (358030)   +2 more
core   +1 more source

Engaging the public in plant science: Communication facilitators and barriers of scaling up a citizen science campaign

People and Nature, EarlyView.
Abstract Volunteers have been involved in nature observations for decades through citizen science initiatives, providing large data sets as well as problem identification that allow a more complete understanding of many natural phenomena. Although communication is a core component in citizen science, the key factors that determine its effectiveness in ...
Kristiina Gibson, Monika Suškevičs, Baiba Prūse, Marta Barberis, Sara A. O. Cousins, Živa Fišer, Margaux Julien, Marianne Kivastik, Marcin Klisz, Attila Lengyel, Zuzana Münzbergová, Radosław Puchałka, Iris Reinula, Froukje Rienks, Julie Koch Sheard, Viktor Siverin, Bojana Stojanova, Sabrina Träger, Tsipe Aavik   +18 more
wiley   +1 more source

The breeding system and effectiveness of introduced and native pollinators of the endangered tropical tree Goetzea elegans (Solanaceae)

Journal of Pollination Ecology, 2011
The impact of introduced species on native organisms is one of the main conservation concerns around the world. To fully understand the effect of introduced pollinators on native plants, it is important to know the reproductive biology of the focal ...
Marcos A. Caraballo-Ortiz, Eugenio Santiago-Valentín   +1 more
doaj   +1 more source

Mitonuclear Mismatch is Associated With Increased Male Frequency, Outcrossing, and Male Sperm Size in Experimentally-Evolved C. elegans

Frontiers in Genetics, 2022
We provide a partial test of the mitonuclear sex hypothesis with the first controlled study of how male frequencies and rates of outcrossing evolve in response to mitonuclear mismatch by allowing replicate lineages of C.
Brent W. Bever, Zachary P. Dietz, Jennifer A. Sullins, Ariana M. Montoya, Ulfar Bergthorsson, Vaishali Katju, Suzanne Estes   +6 more
doaj   +1 more source