Absence of an acid phosphatase isozyme locus as a marker candidate for true to typeness in woodland grape (Vitis vinifera L. ssp. sylvestris Gmelin)

The quest and conservation of existing populations of woodland grape (Vitis vinifera L. ssp. sylvestris Gmelin), the supposed progenitor of the European grapevine (Vitis vinifera L. ssp. sativa) and a significant actor in the evolution of grapevine, has great importance in preserving biodiversity. The proof of true-to-typeness is highly important in ex-situ conservation, because the contamination risk of the woodland grape populations is very high. Some characteristic “sylvestris” simple sequence repeats (SSR) alleles were identified, but they are only characteristic in a specific population. In our recent study, the SSR profiles of 32 woodland grapes were compared to those of 16 European grapevine varieties and 20 rootstocks. Morphology and SSR analyses suggested that the analysed Vitis vinifera ssp. sylvestris Gmelin accessions were true-to-type. In this report, the results of the acid phosphatase isoenzyme analyses of the same woodland grape accessions are presented and a new marker for true-to-typeness is suggested