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Changes in the genetic diversity of barley of Nordic and Baltic origin, studied by isozyme electrophoresis

Published online by Cambridge University Press:  27 June 2007

Agnese Kolodinska Brantestam ,
Roland von Bothmer ,
Isaak Rashal  and
Jens Weibull
Agnese Kolodinska Brantestam*
Affiliation:
Swedish University of Agricultural Sciences, Department of Crop Science, PO Box 44, SE-230 53 Alnarp, Sweden
Roland von Bothmer
Affiliation:
Swedish University of Agricultural Sciences, Department of Crop Science, PO Box 44, SE-230 53 Alnarp, Sweden
Isaak Rashal
Affiliation:
Laboratory of Plant Genetics, Institute of Biology, University of Latvia, LV-2169 Salaspils, Latvia
Jens Weibull
Affiliation:
Swedish University of Agricultural Sciences, Department of Crop Science, PO Box 44, SE-230 53 Alnarp, Sweden
*
*Corresponding author. E-mail: [email protected]
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Abstract

In this study an evaluation was made of changes in the genetic variation of barley (Hordeum vulgare L.) of Nordic and Baltic origin, from the end of the 19th century until today. A comparison of Nordic and Baltic material with exotic material that has not been subjected to intense selection was also made. A total of 293 accessions, including 160 Nordic and 80 Baltic landraces, cultivars and breeding lines, and another 53 landraces of exotic origin (Central Asia), were surveyed using isozyme starch gel electrophoresis. For the four isozymes studied, 28 alleles at 11 loci were observed. The average total genetic diversity value (HT) for individual loci ranged between 0 and 0.519. In the exotic material nine loci were polymorphic and two monomorphic, compared to seven polymorphic and four monomorphic loci in the Nordic and Baltic material. Some of the rare alleles were detected only in the exotic material. The studied isozyme loci of Nordic and Baltic material indicated that modern cultivars have a lower average genetic diversity value compared to the landraces, old and exotic material.

Keywords

cultivated barleygenetic erosionHordeum vulgare Lisozyme variation
Type
Research Article
Information
Plant Genetic Resources , Volume 1 , Issue 2-3 , August 2003 , pp. 143 - 149
Copyright
Copyright © NIAB 2003

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