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Species relationships within the genus Vitis based on molecular and morphological data

Jean-Pierre Péros, Amandine Launay, André Peyrière, Gilles Berger, Catherine Roux, Thierry Lacombe and Jean-Michel Boursiquot

PLOS ONE, 2023, vol. 18, issue 7, 1-24

Abstract: The grape genus Vitis L. includes the domesticated V. vinifera, which is one of the most important fruit crop, and also close relatives recognized as valuable germplasm resources for improving cultivars. To resolve some standing problems in the species relationships within the Vitis genus we analyzed diversity in a set of 90 accessions comprising most of Vitis species and some putative hybrids. We discovered single nucleotide polymorphisms (SNPs) in SANGER sequences of twelve loci and genotyped accessions at a larger number of SNPs using a previously developed SNP array. Our phylogenic analyses consistently identified: three clades in North America, one in East Asia, and one in Europe corresponding to V. vinifera. Using heterozygosity measurement, haplotype reconstruction and chloroplast markers, we identified the hybrids existing within and between clades. The species relationships were better assessed after discarding these hybrids from analyses. We also studied the relationships between phylogeny and morphological traits and found that several traits significantly correlated with the phylogeny. The American clade that includes important species such as V. riparia and V. rupestris showed a major divergence with all other clades based on both DNA polymorphisms and morphological traits.

Date: 2023
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Persistent link: https://EconPapers.repec.org/RePEc:plo:pone00:0283324

DOI: 10.1371/journal.pone.0283324

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