Results 61 to 70 of about 5,051 (199)

Genetic Ancestry Reveals Historical Diversity of Formation Across Three Brazilian Communities of African Descent (Quilombos) in Central Brazil

open access: yesAmerican Journal of Human Biology, Volume 38, Issue 1, January 2026.
ABSTRACT Introduction Characterized as relatively isolated communities, many Brazilian quilombos were formed during the period of slavery in Brazil when enslaved persons (most of African descent) ran away or were abandoned by their enslavers. Quilombos in Central Brazil, whose settlement was more recent due to the relative isolation of the region ...
Sabrina Guimarães Paiva   +7 more
wiley   +1 more source

Pedigree Analysis of Modern Muscadine Cultivars Reveals a Narrow Genetic Base

open access: yesJournal of the American Society for Horticultural Science, 2023
Muscadine grape (Vitis rotundifolia var. rotundifolia) is a rare crop in that it has transitioned from a wild fruiting plant to a domesticated fruit within the past 150 years.
Patrick J. Conner   +3 more
doaj   +1 more source

Estimation of coancestry in Iberian pigs using molecular markers

open access: yesConservation Genetics, 2002
Genetic markers provide a useful tool to estimate pairwise coancestry between individuals in the absence of a known pedigree. In the present work 62 pigs from two related strains of Iberian breed, Guadyerbas and Torbiscal, belonging to a conservation programme with completely known pedigrees since 1945, have been genotyped for 49 microsatellites.
Toro, Miguel Ángel   +5 more
openaire   +3 more sources

Advantages of using molecular coancestry in the removal of introgressed genetic material [PDF]

open access: yesGenetics Selection Evolution, 2013
When introgression of undesired exogenous genetic material occurs in a population intended to remain pure, actions are necessary to recover the original background. It has been shown that genome-wide information can replace pedigree information for different objectives and is a valuable tool in the fields of genetic conservation and breeding.
Amador, Carmen   +2 more
openaire   +4 more sources

The cotton historical lines project—Part I: History and field evaluation

open access: yesCrop Science, Volume 66, Issue 1, January/February 2026.
Abstract Common garden experiments have provided great insights into crop adaptation across many systems. Cotton (Gossypium spp.) cultivars have changed in the 20th and 21st centuries, but breeders have not quantified the degree of these changes. We synthesized a panel of 164 non‐genetically modified genotypes, from the private and public sectors ...
Grant T. Billings   +11 more
wiley   +1 more source

Genomic variation in a widespread Neotropical bird (Xenops minutus) reveals divergence, population expansion, and gene flow [PDF]

open access: yes, 2014
Elucidating the demographic and phylogeographic histories of species provides insight into the processes responsible for generating biological diversity, and genomic datasets are now permitting the estimation of histories and demographic parameters with ...
Brumfield, Robb T., Harvey, Michael G.
core   +3 more sources

Management of genetic diversity in small farm animal populations*

open access: yesAnimal, 2011
Many local breeds of farm animals have small populations and, consequently, are highly endangered. The correct genetic management of such populations is crucial for their survival.
J. Fernández   +3 more
doaj   +1 more source

Estimates of the Effective Population Size and Genetic Structure of the Critically Endangered Ship Sturgeon (Acipenser nudiventris) in the Chinese Section of the Ili River

open access: yesFishes, 2023
Ship sturgeon (Acipenser nudiventris) is a critically endangered fish that is listed on the International Union for Conservation of Nature’s Red List of Threatened Species.
Guo Hu   +10 more
doaj   +1 more source

Global population divergence and admixture of the brown rat (Rattus norvegicus) [PDF]

open access: yes, 2016
Native to China and Mongolia, the brown rat (Rattus norvegicus) now enjoys a worldwide distribution. While black rats and the house mouse tracked the regional development of human agricultural settlements, brown rats did not appear in Europe until the ...
Blum, Michael J.   +20 more
core   +3 more sources

Analysis of Genetic Variation of Rice Straw Characteristics and Its Influence on Biomass

open access: yesPlant Direct, Volume 10, Issue 1, January 2026.
ABSTRACT Rice straw is a key source of lignocellulosic biomass. GWAS can be used to identify genetic loci controlling stem morphological traits that influence biomass. This study aimed to investigate the genotypic diversity of rice straw internodes through GWAS, using 34,232 single‐nucleotide polymorphic sites with a minor allelic frequency (MAF ...
Mahta Mohamadiaza   +4 more
wiley   +1 more source

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