Phenology and viticultural performance of different fungus-resistant grapevine advanced selections at three different altitudes in southern Brazil

Abstract The objective of this work was to characterize the phenology and viticultural performance advanced selections grapevines resistant fungal diseases obtained by Julius Kühn Institute, Institute for Grapevine Breeding Geilweilerhof. experiment conducted in three different grape-growing regions Santa Catarina State, Brazil, municipalities Videira (840 m), São Joaquim (1110 m) Curitibanos (1000 during seasons 2018/2019 2019/2020. evaluated were reds Gf.2004-043-0010 (Gf.10), Gf.2004-043-0013 (Gf.13), Gf.2004-043-0021(Gf.21) white Gf.2004-043-0004 (Gf.04). We found that pyramided loci Rpv1+Rpv3.1 Run1+Ren3 present, which confer resistance downy mildew powdery mildew, respectively. phenological stages events budbreak, full bloom, veraison maturity. productive variables fertility index, number clusters, cluster weight yield. Technological maturity parameters soluble solids, total acidity pH. To understand relationship between whether these relationships changed depending on cultivation environment Multi-Trait Genotype–Ideotype Distance Index used rank genotypes based analyzed traits. For most selections, budbreak occurred second half September; bloom from late October mid-November; end December mid-January; January February. earliest vineyard located at highest altitude m - Joaquim), while lowest – Videira). All produced grapes with adequate concentrations pH produce quality wines. Except Gf.13, all levels solids suitable Based (MGIDI) Gf.13 Gf.10 are promising region is genotype higher altitude, 1000 1110 m.