The role of berry skin traits in fungus-resistant PIWI grapevines Palma-Guerrero, Javier Riemann, Michael Eliseev, Ruslan Arribas, Ana Maria Peter, Nadine Zehnder, Miro Bieler, Eva Schärer, Hans-Jakob conference object https://orgprints.org/id/eprint/57230/ /id/eprint/57230/1/SGP-poster_%20Palma_et_al.pdf open access 2025 Plant diseases Fungi Pathogen Viticulture Abacus FiBL25134