Biotype diversity within the autochthonous ‘Bobal’ grapevine variety
Bobal is the second most widely grown Spanish red grape variety (54,165 has), mainly cultivated in the Valencian Community and especially, in Utiel-Requena region (about 67% of 34,000 has). In this study, agronomic and enological parameters were determined in 98 biotypes selected during 2018 and 2019 in more than 50 vineyards over 50 years-old in the Utiel-Requena region. Moreover, a multi-criteria approach considering temperature and rainfall (Fig. 1A), among other parameters, was made to establish three different zones within the region (Fig. 1B), where in the future the selected biotypes will evaluated. In fact, in 2020, 4 replicates and 12 vines per biotype were planted in an experimental vineyard to preserve this important intra-cultivar diversity. The results from 2021 and 2022 seasons confirmed a wide range of variation among biotypes for important agronomic and oenological parameters. In 2023, a selection of biotypes from the established zones were grafted in different rootstocks (Fig 1B) and a first genetic and physiological characterization of the most interesting biotypes is being performed.
Acknowledgements: The authors would like to acknowledge D.O Utiel-Requena (Valencia, Spain) and AEI-FEDER PID2021-123305OB-C31 for their financial and technical support.
Issue: ICGWS 2023
1Department of Ecology, Desertification Research Centre (CIDE-CSIC-UV-GV), Moncada, 46113 Valencia, Spain.
2Universidad de las Islas Baleares (UIB), Departamento de Biología, Ctra. Valldemossa km 7.5, Balearic Islands, Palma, 07122, Spain.
3Centro para el Desarrollo de la Agricultura Sostenible, Instituto Valenciano de Investigaciones Agrarias (IVIA), 46113 Moncada, Valencia, Spain.