Results 21 to 30 of about 2,030 (202)

Reliable effective number of breeders/adult census size ratios in seasonal‐breeding species: Opportunity for integrative demographic inferences based on capture–mark–recapture data and multilocus genotypes [PDF]

open access: yesEcology and Evolution, 2017
The ratio of the effective number of breeders (N b) to the adult census size (N a), N b/N a, approximates the departure from the standard capacity of a population to maintain genetic diversity in one reproductive season.
G. Sánchez‐Montes   +4 more
semanticscholar   +5 more sources

On the Potential for Estimating the Effective Number of Breeders From Heterozygote-Excess in Progeny

open access: yesGenetics, 1996
Abstract The important parameter of effective population size is rarely estimable directly from demographic data. Indirect estimates of effective population size may be made from genetic data such as temporal variation of allelic frequencies or linkage disequilibrium in cohorts.
Dennis Hedgecock, Dmitri Zaykin
exaly   +3 more sources

Predictive approach to optimize the number of visual graders for indirect selection of high yielding Urochloa ruziziensis genotypes

open access: yesCrop Breeding and Applied Biotechnology, 2020
Forage plant breeders often use visual scores to assess agronomic traits because of the costs associated with in-depth phenotyping in the initial stages of breeding cycles.
Jales Mendes Oliveira Fonseca   +5 more
doaj   +2 more sources

Genetic characterization of wild, broodstock and seed samples of Polititapes rhomboides (Bivalvia: Veneridae): Implications for hatchery seed production

open access: yesAquaculture Reports, 2021
The banded carpet shell Polititapes rhomboides is a fishery resource and a suitable candidate for the development of native clam aquaculture in Europe. Here, we analyzed nine microsatellite loci in wild samples to provide estimates of genetic diversity ...
Ginna M. Chacón   +5 more
doaj   +1 more source

Genealogical information analysis of Gyr and Nelore cattle from Costa Rica [PDF]

open access: yesCiência Rural, 2023
: The objectives were to analyze the genealogical information of Gyr (GY) and Nelore (NL) cattle from Costa Rica. Analyzed: pedigree integrity (GY, 13272; NL, 18153); number of complete, maximum traced and equivalent complete generations; inbreeding (FI);
Ruth Castro-Vásquez   +5 more
doaj   +1 more source

The evaluation of genomic diversity and selection signals in the autochthonous Slovak Spotted cattle

open access: yesCzech Journal of Animal Science, 2021
The aim of this study was to evaluate the effective population size based on linkage disequilibrium and the trend of inbreeding derived from runs of homozygosity (ROH) in the Slovak Spotted cattle.
Radovan Kasarda   +8 more
doaj   +1 more source

Optimizing Plant Breeding Programs for Genomic Selection

open access: yesAgronomy, 2022
Plant geneticists and breeders have used marker technology since the 1980s in quantitative trait locus (QTL) identification. Marker-assisted selection is effective for large-effect QTL but has been challenging to use with quantitative traits controlled ...
Lance F. Merrick   +4 more
doaj   +1 more source

Linkage disequilibrium and effective population size when generations overlap

open access: yesEvolutionary Applications, 2013
Estimates of effective population size are critical for species of conservation concern. Genetic datasets can be used to provide robust estimates of this important parameter. However, the methods used to obtain these estimates assume that generations are
John D. Robinson, Gregory R. Moyer
doaj   +1 more source

Long-term stocking practices threaten the original genetic diversity of the southernmost European populations of Atlantic salmon Salmo salar

open access: yesEndangered Species Research, 2020
Many Atlantic salmon Salmo salar populations in Europe are threatened by previous stocking with foreign hatchery strains. Temporal patterns of genetic characteristics of salmon from northern Spain, the southernmost European populations, were compared ...
Almodóvar, A   +5 more
doaj   +1 more source

Rice molecular markers and genetic mapping: Current status and prospects

open access: yesJournal of Integrative Agriculture, 2017
Dramatic changes in climatic conditions that supplement the biotic and abiotic stresses pose severe threat to the sustainable rice production and have made it a difficult task for rice molecular breeders to enhance production and productivity under these
Ghulam Shabir   +10 more
doaj   +1 more source

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