In:
Genome, Canadian Science Publishing, Vol. 38, No. 3 ( 1995-06-01), p. 516-524
Abstract:
A molecular-marker map of bread wheat having many markers in common with other grasses in the Gramineae family is a prerequisite for molecular level genetic studies and breeding in this crop species. We have constructed restriction fragment length polymorphism maps of the A-, B-, and D-genome chromosomes of homoeologous group 2 of hexaploid wheat (Triticum aestivum L. em. Thell) using 114 F 7 lines from a synthetic × bread wheat cross and clones from 11 libraries. Chromosomes 2A, 2B, and 2D comprise 57, 60, and 56 markers and each spans about 200 cM. Comparisons between chromosomes are facilitated by 26 sets of homoeoloci. Genes mapped include a heterologous abscisic acid responsive locus cloned as pBS128, the epidermal waxiness inhibitor W2 1 , and two presumed leaf rust and stem rust resistance genes. Anomalies suggesting ancestral rearrangements in chromosome 2B are pointed out and features of wheat group 2 chromosomes that are common to barley (Hordeum vulgare L.), rice (Oryza spp.), and T. tauschii are discussed.Key words: RFLP, wheat, waxy, rust.
Type of Medium:
Online Resource
ISSN:
0831-2796
,
1480-3321
Language:
English
Publisher:
Canadian Science Publishing
Publication Date:
1995
detail.hit.zdb_id:
2020635-5
SSG:
12
