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Analysis of Genome Differentiation Between High Toxin and Low Toxin Accessions of Lathyrus sativus Using RAPD Markers

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Author(s): M. Qayyum Khan | S. Abdul Majid

Journal: Pakistan Journal of Biological Sciences
ISSN 1028-8880

Volume: 4;
Issue: 12;
Start page: 1526;
Date: 2001;
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Keywords: RAPD | genome | differentiation | L. sativus | phylogenetic tree

ABSTRACT
The random amplified polymorphic DNA (RAPD) markers were used to study the nature of genome differentiation between natural populations of L. sativus. The degree of band sharing was used as a criterion to calculate the genetic distance and to construct phylogenetic trees. The 28 populations from Pakistan, India and Ethiopia differed in the amount of β- N - oxalyl -L- a, β- diamino propionic acid (β-ODAP) in their kernels. Irrespective of their geographical diversity high toxin and low toxin varieties clustered into genetic groups in the phylogenetic tree. The results would suggest that the variation between populations in the neurotoxin content is governed by genetic factors and has occurred for this trait during evolution

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