Peach genetic resources: diversity, population structure and linkage disequilibrium.
Summary of "Peach genetic resources: diversity, population structure and linkage disequilibrium."
Peach (Prunus persica (L.) Batsch) is one of the most important model fruits in the Rosaceae family. Native to the west of China, where peach has been domesticated for more than 4,000 years, its cultivation spread from China to Persia, Mediterranean countries and to America. Chinese peach has had a major impact on international peach breeding programs due to its high genetic diversity. In this research, we used 48 highly polymorphic SSRs, distributed over the peach genome, to investigate the difference in genetic diversity, and linkage disequilibrium (LD) among Chinese cultivars, and North American and European cultivars, and the evolution of current peach cultivars.
This article was published in the following journal.
Name: BMC genetics
- PubMed Source: http://www.ncbi.nlm.nih.gov/pubmed/24041442
- DOI: http://dx.doi.org/10.1186/1471-2156-14-84
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Medical and Biotech [MESH] Definitions
The discipline studying genetic composition of populations and effects of factors such as GENETIC SELECTION, population size, MUTATION, migration, and GENETIC DRIFT on the frequencies of various GENOTYPES and PHENOTYPES using a variety of GENETIC TECHNIQUES.
Nonrandom association of linked genes. This is the tendency of the alleles of two separate but already linked loci to be found together more frequently than would be expected by chance alone.
The change in gene frequency in a population due to migration of gametes or individuals (ANIMAL MIGRATION) across population barriers. In contrast, in GENETIC DRIFT the cause of gene frequency changes are not a result of population or gamete movement.
Human histocompatibility (HLA) surface antigen encoded by the A locus on chromosome 6. Individuals bearing this allele are more susceptible to Hodgkin's disease. HLA-A1 is in linkage disequilibrium with HLA-B8 and HLA-DR3.
A phenomenon that is observed when a small subgroup of a larger POPULATION establishes itself as a separate and isolated entity. The subgroup's GENE POOL carries only a fraction of the genetic diversity of the parental population resulting in an increased frequency of certain diseases in the subgroup, especially those diseases known to be autosomal recessive.