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Genetic diversity of some accessions of Cucurbita maxima from Spain using RAPD and SBAP markers

Abstract

Increasing the knowledge of the molecular diversity of a crop is essential for extending its genetic base, identifying cultivars and selecting parental varieties for breeding programs. In this sense, Cucurbita maxima Duch. is poorly characterised. Nineteen accessions of this species and 8 related Cucurbita accessions were included in a genetic diversity analysis. For this purpose, Random Amplified Polymorphic DNA markers (RAPDs), which analyse neutral variability, and Sequence-Based Amplified Polymorphism (SBAPs), which preferentially amplify coding regions of the genome, were used. While the UPGMA cluster and the principal coordinates analysis obtained using RAPDs did not group the different accessions according either to fruit morphological criteria or to passport data (origin and agro-climatic conditions), the principal coordinates analysis obtained using SBAPs grouped the different pumpkin accessions fundamentally according to the type of use (human consumption, animal fodder or ornamental). This passport trait is reported to be associated with agronomic breeding characters of interest. The usefulness of both types of markers for discriminating accessions of breeding interest is discussed.

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Ferriol, M., Belén Picó, M. & Nuez, F. Genetic diversity of some accessions of Cucurbita maxima from Spain using RAPD and SBAP markers. Genetic Resources and Crop Evolution 50, 227–238 (2003). https://doi.org/10.1023/A:1023502925766

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  • DOI: https://doi.org/10.1023/A:1023502925766

  • Cluster analysis
  • Cucurbitaceae
  • PCR-based markers
  • Principal coordinates analysis