Preliminary Clonal Characterization of Malvasia Volcanica and Listan Prieto by Simple Sequence Repeat (SSR) Markers in Free-Phylloxera Volcanic Vineyards (Lanzarote and Fuerteventura (Canary Island, Spain))

Identificador:  imarina:9463526

Handle:  https://hdl.handle.net/20.500.11797/imarina9463526

Autors:  Fort, Francesca; Suarez-Abreu, Luis Ricardo; Lin-Yang, Qiying; Deis, Leonor; Canals, Joan Miquel; Zamora, Fernando

Resum:
Climate change is usually recognized as the most significant challenge facing viticulture in the 21st century. As a result, experts are increasingly emphasizing the need to explore the biodiversity within the species Vitis vinifera L. In this context, the present study investigated the intra-varietal biodiversity of two widely cultivated grapevine varieties on the Canary Islands of Lanzarote and Fuerteventura (Spain). These islands, characterized by desert-like climates, strong winds, volcanic soils, and phylloxera-free conditions, have presented uninterrupted grapevine cultivation for the past three to five centuries. Intra-varietal variability was detected in 93.46% of the 107 accessions analyzed. The most divergent samples were a Malvasia Dubrovacka (LNZ-87) and a Listan prieto (FTV-8), each exhibiting five distinct variations. Another Listan prieto accession (FTV-13) showed four variations. A group of seven individuals displayed three variations including two Malvasia volcanica accessions (LNZ-12, LNZ-72) and five Listan prieto accessions (FTV-1, FTV-2, FTV-7, FTV-9, FTV-12). A set of 100 SSR markers was used to analyze this grapevine collection, of which 17 revealed variability. The most informative markers were VChr15b, VVIp34, VVMD32, VChr9b, VVMD5, VVMD28, and VMC4F3, while the least informative was VVNTM1, which detected no variation. The parentage of Malvasia volcanica (Malvasia Dubrovacka x Bermejuela) was supported by all SSR markers, assuming that three of them may involve a mutated parent.