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Agricultura Técnica
Instituto de Investigaciones Agropecuarias, INIA
ISSN: 0365-2807
EISSN: 0365-2807
Vol. 64, No. 4, 2004, pp. 426-430
Bioline Code: at04049
Full paper language: Spanish
Document type: Note
Document available free of charge

Agricultura Técnica, Vol. 64, No. 4, 2004, pp. 426-430

 en Accumulation of nitrogen compounds as related to the "soft berry" problem in table grapes
Ruiz, Rafael S.; Moyano, Stella A. & Navia, Tania P.

Abstract

With the objective of evaluating a probable association between N metabolic disorders and the problem known as "soft berry" at the beginning of 2002 rachis and berries of bunches from a vineyard, Vitis vinifera check for this species in other resources L. cv. Thompson Seedless, of the VI Region, Chile (34°15' S. lat, 72°25' W. long) with the presence of "soft", "intermediate", and "firm" berries were collected The results indicated that soft or intermediate berries had higher levels of N in the pulp and skin, and higher arginine and putrescine levels in berries and rachis. Evaluations of the fruit indicated that soft berries showed less firmness, less than 190 g-strength mm-1, less weight and less soluble solids (°Brix). The results indicated some similarity with factors that have been associated to the disorder known as "bunch stem necrosis" or "waterberry".

Keywords
putrescine, physiological disorders, nitrogen, arginine, berry firmness, Vitis vinifera, bunch stem necrosis.

 
 es Acumulación de compuestos nitrogenados en relación al problema de baya blanda en uva de mesa
Ruiz, Rafael S.; Moyano, Stella A. & Navia, Tania P.

Resumen

Con el objeto de evaluar la probable incidencia de trastornos del metabolismo del N en el problema denominado "baya blanda" de la vid ( Vitis vinifera check for this species in other resources L.), a inicio de la cosecha 2002 se recolectaron muestras de bayas y raquis de racimos procedentes de un parronal Vitis vinifera L. cv. Thompson Seedless de la VI Región, Chile (34°15' lat. Sur, 72°25' long. Oeste) con presencia de bayas "blandas", "intermedias" y "firmes". Los análisis indicaron que las bayas incluidas en las categorías blanda y/o intermedia presentaron una concentración mayor de N en la pulpa y en la piel, mayores niveles de arginina y de putrescina. Evaluaciones en la fruta indicaron que las bayas blandas presentaron además menor firmeza (menos de 190 g-fuerza mm-1), menor peso y menor concentración de sólidos solubles (°Brix). Los resultados indicaron una similitud con los factores que se han asociado al trastorno conocido como "palo negro".

Palabras-clave
putrescina, desórdenes fisiológicos, nitrógeno, arginina, firmeza de bayas, Vitis vinifera, palo negro

 
© Copyright 2004 - Instituto de Investigaciones Agropecuarias, INIA (Chile).
Alternative site location: http://www.inia.cl/at/agritec.htm

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