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GrainGenes Reference Report: GNM-36-512

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Reference	GNM-36-512
Title	Geographical distribution of isozyme alleles for phosphogluconate dehydrogenase in barley
Journal	Genome
Year	1993
Volume	36
Pages	512-516
Author	Konishi T Yoshimi R
Abstract	The Ak and Tj alleles at the Pgdl locus and the Ps and Tn alleles at the Pgd2 locus were detected for phosphogluconate dehydrogenase in barley. The Ak allele at the Pgdl locus was widely distributed around the world, while the Tj allele was found only in two accessions from Nepal and one from India. At the Pgd2 locus, the Ps allele was abundant everywhere, whereas the Tn allele was occasionally found in Caucasus, Turkey, and Europe, and scarcely or none in Korea, China, Nepal, India, and Ethiopia. The Tn allele was also detected in Japanese accessions. Among them, six-rowed varieties carrying the Tn allele were principally grown in northern parts of Japan and characterized by covered kernel, the Occidental type for nonbrittleness of rachis, and resistance to Japanese races of powdery mildew. However, the loci responsible for these characteristics were independent of the Pgd2 locus.
Keyword	[ Hide all but 1 of 20 ] ak-allele allele-frequency alleles east-asia ethiopia europe gene-frequency geographical-distribution hordeum vulgare isoenzyme japan loci pgd1-locus pgd2-locus phosphogluconate-dehydrogenase ps-allele south-asia tj-allele tn-allele west-asia

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