GrainGenes Reference Report: JHR-90-446
Reference
JHR-90-446
Title
Inheritance and Linkage Relationships of Morphological and Isozyme Loci in As-genome Diploid Oat (Avena spp.).
Journal
Journal of Heredity
Year
1999
Volume
90
Pages
446-452
Author
Hoffman DL
Abstract
Morphological and isozyme markers are useful supplements to molecular marker maps and can be used in comparative mapping studies. Isozymes, as neutral markers, have been used to study genic and evolutionary relationships among related species. In this study, the genetics of six morphological traits and isozyme variants of four enzyme systems were investigated with F(2)/F(2:3) populations derived from three crosses of three As-genome diploid oat (Avena spp.) accessions. All traits and variants conformed to a model of monogenic inheritance except for lemma color. The four enzyme systems yielded six putative variant isozyme loci. Phenotypic data of the five monogenically inherited morphological traits and six isozyme loci were subjected to a pair-wise linkage analysis. Five linked pairs of loci were found. Multipoint linkage analysis identified a loose linkage group of two morphological and two isozyme loci. Included in the linkage group was a locus conferring alkaline beta-galactosidase (Bgl1) and an esterase (Ests) locus. A similar linkage has been observed in hexaploid oat and barley. Additional studies are planned to verify and assign the small linkage group and to assign the remaining unlinked markers. This new information will facilitate further mapping comparisons and evolution studies within Avena.
External Databases
https://doi.org/10.1093/jhered/90.4.446
Gene
EstS (Avena) Bgl1 (Avena) Lsp (Avena) Gh (Avena)
Germplasm
A. strigosa CIav2630 A. strigosa CIav3815
Locus
EstS Bgl1 Lsp Gh
Map Data
Oat-1999-2630x1994 Oat-1999-2630x3815 Oat-1999-3815x1994
Keyword
avena
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GrainGenes is a product of the Agricultural Research Service of the US Department of Agriculture.
GrainGenes Reference Report: JHR-90-446
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GrainGenes is a product of the Agricultural Research Service of the US Department of Agriculture. | |||