IDENTIFICATION AND CHARACTERIZATION OF AN ORIGINAL GRAPEVINE CULTIVAR (Vitis vinifera) FOUND IN CHILE

Abstract

Currently, many monovarietal vineyards present a minority of mixed cultivars. Some of these cultivars are unknown and could represent an opportunity to discover new and potentially useful genotypes both for research and production purposes. In a 'Carmenère' vineyard planted in 1994 in Palmilla (Colchagua Valley, Chile), a minority presence of other cultivars was found. The present work covers for the first time the identification and characterization of one of these cultivars, which presented a very poor fruit set. Through classic ampelography, it was not possible to associate the studied cultivar with any known cultivar in Chile. However, through a simple sequence repeats (SSR) comparison against the database of the INRA Germplasm Repository "Domaine de Vassal" in France, the cultivar was identified as a triploid accession named 'Folle Blanche Faux' (Vitis vinifera L.) that was previously found in Chile during the season of 1950-1951. This cultivar presents earlier bud breaking than 'Carmenère', has morphologically complete flowers, and shows a physiological disorder around the fruit set, leading to partial or complete bunch necrosis under the environmental conditions of Palmilla. This cultivar contributes to the genotypic richness present in Chile and might be an interesting tool for physiological and molecular studies. It also could become productive under other environmental conditions (i.e., environmental conditions that favor a good fruit set) or by the application of adequate vineyard practices, such as cane girdling at bloom time.

Caracterización de la latencia invernal de cepas antiguas de vid (Vitis vinifera L.) País, Gros Colman y Torrontés Riojano, establecidas en el desierto de Atacama, Chile

“…El ápice del brote joven de esta cepa es muy abierto, con un nivel medio de pelos postrados en la punta y con escasos pelos erectos (Tabla 3), entre las características principales, diferenciándose de la variedad redescubierta por González et al, (2016). El brote se caracteriza por presentar una posición erecta y el color de la cara dorsal del entrenudo La hoja joven se caracteriza por tener un color verde con zonas antociánicas y presenta escasos pelos postrados entre las nervaduras principales del envés del limbo, al igual que los pelos erectos sobre las nervaduras principales (Tabla 3).…”

“…Los dientes de la hoja evidencian una mezcla de ambos lados rectilíneos y ambos lados convexos (Tabla 3). Las flores presentan estambres y gineceo bien formados (Figura 2), al igual que la variedad antigua redescubierta por González et al (2016). Sin embargo, esta cepa presenta una cuaja normal.…”