2001/06/01 by G Savage Dangl, Gerald S. Dangl, Mary Lou Mendum +8 · 1 citation
Agricultural and Biological Sciences · Business, Management and Accounting · #Fermentation and Sensory Analysis #Horticultural and Viticultural Research #Wine Industry and Tourism
paper · doi:10.1139/g01-026
openalex publication_date 2001/06/01 · openalex created_date 2016/06/24 · openalex updated_date 2026/06/11
The USDA germplasm repositories help to preserve the genetic variability of important crop species by collecting and maintaining representative cultivars and related germplasm. Simple sequence repeat markers with high allelic diversity were used to type 41 grapevines from 40 accessions. All vines were either seedless table grape cultivars or cultivars with names similar to table grape cultivars. The proportion of shared alleles was selected as the most appropriate statistical measure of genetic distance for this population. In conjunction with morphological traits, known synonyms were confirmed and a previously unknown synonym was discovered. An alleged synonym in the literature was disproved by the DNA data. The data were consistent with known parentage, where such data were available. Two mislabeled vines in the USDA collection were identified. UPGMA grouped the cultivars loosely into three groups: a group of nine mostly Middle Eastern cultivars, a group of 22 accessions mostly from Russia and Afghanistan that were morphologically similar to 'Thompson Seedless', and a third very loose group of 11 accessions consisting mostly of eastern European wine grape cultivars. The limitations and usefulness of this type of analysis are discussed.