PT - JOURNAL ARTICLE AU - Fernando Martínez De Toda AU - Juan Carlos Sancha TI - Characterization of Wild Vines in La Rioja (Spain) AID - 10.5344/ajev.1999.50.4.443 DP - 1999 Jan 01 TA - American Journal of Enology and Viticulture PG - 443--446 VI - 50 IP - 4 4099 - http://www.ajevonline.org/content/50/4/443.short 4100 - http://www.ajevonline.org/content/50/4/443.full SO - Am J Enol Vitic.1999 Jan 01; 50 AB - The largest population of wild vines located to date in La Rioja is studied, with the following objectives: (1) application of the criteria proposed by Levadoux for the characterization of material: foliar and seed morphology and the sex of the individual plants; and (2) determination of the wild vine types to which they belong: post cultivated, sub-spontaneous or spontaneous, and within this last group, whether they are colonials, autochthonous, or hybrids. Although the population shows a marked sylvestris character, it cannot be concluded that it is purely autochthonous, and should be considered as spontaneous and of hybrid type — that is, the result of the hybridization of autochthonous wild vines with other post-cultivated or subspontaneous forms.