GENETIC RELATIONSHIPS BETWEEN SELECTED ITALIAN AND SPANISH TRADITIONAL TOMATO CULTIVARS AS REVEALED BY (GATA)₄ MARKERS

The long period of common history between Naples and Spain, as well as several apparent morphological similarities between traditional cultivars from Southern Spain and the Campania Region, whose capital is Naples, initiated this study of the possible relationship between Italian and Spanish traditional cultivars.
In this work, a set of 26 accessions of the traditional cultivar types ‘Muchamiel’ and the ‘De la Pera’ from the southeast of Spain and ‘Sorrento’ and ‘San Marzano’ from the south of Italy, were evaluated using a (GATA)₄ oligonucleotide probe.
The number of DNA fragments found in the hybridization pattern of ‘Muchamiel’ and ‘De la Pera’ accessions was higher than that obtained in the accessions of ‘Sorrento’ and ‘San Marzano’. In addition, the genetic variability among the accessions of ‘Muchamiel’ proved to be higher than the variability found among the accessions of ‘De la Pera’. Similarly, ‘Sorrento’ accessions showed larger variability than ‘San Marzano’ accessions.
The evidenced DNA polymorphism was used to evaluate the genetic distances among the analyzed samples.
The dendrogram obtained showed a good clustering of the accessions belonging to the respective traditional cultivar.
Our data confirm that the polymorphism of GATA fragment is a useful tool to highlight genetic relationships between traditional tomato cultivars.

XXVIII International Horticultural Congress on Science and Horticulture for People (IHC2010): III International Symposium on Plant Genetic Resources

S. García-Martínez, G. Corrado, J.J. Ruiz, R. Rao

oligonucleotide probe, landraces, Solanum lycopersicum

https://doi.org/10.17660/ActaHortic.2011.918.41