Characterisation of peach (Prunus persica L.) cultivars using isozymes as molecular markers

Six enzyme systems were surveyed in 12 peach cultivars. using polyacrylamid e gel electrophoresis of leaf extracts. Variation between cultivars was obs erved in four enzymes: peroxidase, isocitrate dehydrogenase, acid phosphata se and alkaline phosphatase. Genetic variation parameters revealed that the maximum proportion of polymorphic loci was 46.1%. Out of 15 loci studied, 9 were monomorphic and 6 were polymorphic for 20 alleles. A dendrogram show ed the grouping of cultivars on the basis of genetic distance values. The u se of isozyme electrophoresis to find the inter-relationship of cultivars i s discussed. (C) 2001 Elsevier Science B.V. All rights reserved.