Genetic diversity in khorasan and rivet wheat by assessment of morphological traits and seed storage proteins
S. Carmona A , L. Caballero B , L. M. Martín A and J. B. Alvarez A C
+ Author Affiliations
- Author Affiliations
A Departamento de Genética, Escuela Técnica Superior de Ingenieros Agrónomos y de Montes, Edificio Gregor Mendel, Campus de Rabanales, Universidad de Córdoba, ES-14071 Córdoba, Spain.
B Departamento de Mejora Genética Vegetal, Instituto de Agricultura Sostenible, Consejo Superior de Investigaciones Científicas, Apdo. 4084, ES-14080 Córdoba, Spain.
C Corresponding author. Email: jb.alvarez@uco.es
Crop and Pasture Science 61(11) 938-944 https://doi.org/10.1071/CP10228
Submitted: 30 June 2010 Accepted: 21 September 2010 Published: 4 November 2010
Abstract
The genetic diversity of 77 accessions of khorasan wheat (Triticum turgidum subsp. turanicum Jakubz em. A. Löve & D. Löve) and 313 accessions of rivet wheat (T. turgidum L. subsp. turgidum) was assessed on the basis of analysis of several morphological traits and seed storage proteins. Eleven allelic variants were detected in khorasan wheat, three for the Glu-A1, one of them identified as novel; while two of the eight alleles detected for the Glu-B1 have not previously been described. A higher level of variability was observed in rivet wheat, with the detection of 20 allelic variants, five alleles at the Glu-A1 loci, two of them new, and 15 allelic variants at the Glu-B1 loci, six of these being novel. The khorasan wheat accessions derived from 22 different origins, while there were 39 origins for the rivet wheat accessions. Genetic diversity was lower among the khorasan (Ht = 0.395) than among the rivet wheat accessions (Ht = 0.545). Nevertheless, in both species, most of this diversity appeared between origins, with very low diversity observed within origins. The detected variation could be used for transfer new quality genes to durum wheat, thus enlarging the genetic pool of this species.
Additional keywords: electrophoresis, genetic diversity, glutenin, morphological traits.
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