RT Journal Article SR Electronic T1 Molecular Characterization of Grapevine Rootstocks Maintained in Germplasm Collections JF American Journal of Enology and Viticulture JO Am J Enol Vitic. FD American Society for Enology and Viticulture SP 75 OP 86 DO 10.5344/ajev.2007.58.1.75 VO 58 IS 1 A1 María Teresa de Andrés A1 José Antonio Cabezas A1 María Teresa Cervera A1 Joaquín Borrego A1 José Miguel Martínez-Zapater A1 Nicolás Jouve YR 2007 UL http://www.ajevonline.org/content/58/1/75.abstract AB Grapevine rootstocks are a complex group of plants, most of them hybrids derived from native North American Vitis species that are used to provide resistance against phylloxera and soilborne problems. A representative group of rootstock accessions and cultivars of the Vitis species commonly used in rootstock breeding (V. vinifera, V. berlandieri, V. riparia, and V. rupestris) and conserved in the largest European germplasm banks of Vitis were analyzed using sequence tagged microsatellite sites (STMS) and amplified fragment length polymorphism (AFLP) markers. The STMS analysis allowed assigning a microsatellite genotype to most of root-stock cultivars, although it revealed numerous misclassified accessions in the studied collections. Genetic similarity among the different genotypes was analyzed using AFLP, which provided information on the genetic relationships within and between hybrid groups.