SciELO - Scientific Electronic Library Online

vol.70 número3Evaluación de la Resistencia de Ciruelo Transgénico C5 (Prunus domestica L.) contra Cuatro Aislamientos Chilenos del Virus Pox del Ciruelo a través de MicroinjertosEfecto de los Fungicidas sobre el Desarrollo del Hongo Entomopatógeno Metarhizium anisopliae var. anisopliae índice de autoresíndice de materiabúsqueda de artículos
Home Pagelista alfabética de revistas  

Servicios Personalizados




Links relacionados


Chilean journal of agricultural research

versión On-line ISSN 0718-5839


FREDES, Claudio; VON BENNEWITZ, Eduardo; HOLZAPFEL, Eduardo  y  SAAVEDRA, Felipe. Relation between Seed Appearance and Phenolic Maturity: A Case Study Using Grapes cv. Carménère. Chilean J. Agric. Res. [online]. 2010, vol.70, n.3, pp.381-389. ISSN 0718-5839.

Sensory evaluation of grapes (Vitis vinifera L.) plays a key role in determining the harvest time in grapevine varieties. The harvest time of cv. Carménère is one of the latest of Chile. During the season 2007-2008, the evolution of the appearance of ’Carménère’ seeds was evaluated as a harvest criterion, comparing it with the chemical and phenolic ripening. The samples were obtained from an organic vineyard located in Curicó Valley, Chile. Starting at 16 °Brix, 100 seed berries samples were collected weekly from medium vigor vines in order to register photographically the ventral and dorsal sides of each seed. In addition to the seed tannins percentage, the extractable anthocyanins, total anthocyanins and total polyphenols index, as well as the titratable acidity, soluble solids and pH were registered. A color wheel of seed coat with a description of 12 digital colors was proposed for this cultivar. When the color number exceeded 10 (very dark brown), the soluble solids had already reached 24 °Brix 1 month earlier. Two inverse correlations between seed coat color vs. seed phenols percentage and vs. total polyphenol index were found. The proper phenolic maturation (maximum anthocyanins and minimum seed tannins percentage) occurred 177 d post flowering. The observation of seed coat color can be a reliable, simple and low-cost parameter to determine the correct ripeness of phenols in ’Carménère’ grapevines.

Palabras clave : seed development; harvest index; seed color; phenols.

        · resumen en Español     · texto en Inglés     · Inglés ( pdf )


Creative Commons License Todo el contenido de esta revista, excepto dónde está identificado, está bajo una Licencia Creative Commons