Query (optional)   in Class  All Allele Author Colleague Collection Assembly Gene Gene Class Gene Product Germplasm Image Journal Keyword Library Locus Map Map Data Marker Pathology Polymorphism Probe Protein QTL Rearrangement Reference Sequence Species Trait Trait Study Two Point Data  

---

GrainGenes Reference Report: GCE-48-101

[Submit comment/correction]

Reference	GCE-48-101
Title	Could early gene flow have created similar allozyme-gene frequencies in cultivated and wild barley?
Journal	Genetic Resources and Crop Evolution
Year	2001
Volume	48
Pages	101-104
Author	Ladizinsky G Genizi A
Abstract	Summary: The possible role of early gene flow between wild and cultivated barley in their similar esterase gene frequencies was tested in a simulation study. The hypothetical population consisted of 99.9% wild forms possessing three alleles of an esterase gene and 0.01% domesticated forms possessing one of these esterase alleles. Various rates of inbreeding, selection coefficients against the wild form and shifting cultivation methods were tested for their effect on the establishment of the domesticated form and the esterase gene flow between the two barley types. Of these factors, inbreeding rates, in the range of 90-99%, had the smallest effect on the establishment of the domesticated form under primitive cultivation. Via gene flow, the esterase allelic frequency in the domesticated form could be similar to that of the wild form under 90% outcrossing in the domesticated form for 115-230 years, an unrealistic situation for barley which normally exhibits about 1% outcrossing. It seems, therefore, that the similar esterase allelic frequencies in wild and cultivated barley is only partly due to gene flow, and it is more plausibly accounted for by multiple domestications
Keyword	[ Hide all but 1 of 21 ] alleles barley cultivated barley cultivation domestication esterase loci flow frequencies gene gene flow gene frequency hordeum vulgare inbreeding method multiple outcrossing population selection simulation tough rachis wild barley

GrainGenes is a product of the Agricultural Research Service of the US Department of Agriculture.