Predicting Berry Quality Attributes in cv. Xarel·lo Rain-Fed Vineyards Using Narrow-Band Reflectance-Based Indices / (Record no. 3236)

000 -LEADER
fixed length control field 03089nma a2200253 4500
008 - FIXED-LENGTH DATA ELEMENTS--GENERAL INFORMATION
fixed length control field 2013 eng
022 ## - INTERNATIONAL STANDARD SERIAL NUMBER
ISSN 0002-9254
040 ## - CATALOGING SOURCE
Transcribing agency Sonoma County Wine Library
041 ## -
-- eng
100 0# - MAIN ENTRY--PERSONAL NAME
Personal name Cristina González-Flor.
245 10 - TITLE STATEMENT
Title Predicting Berry Quality Attributes in cv. Xarel·lo Rain-Fed Vineyards Using Narrow-Band Reflectance-Based Indices /
Statement of responsibility, etc by Cristina González-Flor; Lydia Serrano Porta; Gil Gorchs Altarriba.
260 ## - PUBLICATION, DISTRIBUTION, ETC. (IMPRINT)
Name of publisher, distributor, etc American Society for Enology and Viticulture,
Date of publication, distribution, etc 2013.
300 ## - PHYSICAL DESCRIPTION
Type Journal article
490 0# - JOURNAL TITLE
Title of the journal American Journal of Enology and Viticulture
520 ## - ABSTRACT
Abstract In rain-fed vineyards, water availability strongly influences vegetative and reproductive growth and, thus, berry quality. Narrow-band spectral indices might provide information on vine structure and physiological status and might be a useful tool for predicting berry quality. The present study tested the feasibility of using the normalized difference vegetation index (NDVI) and the photochemical reflectance index (PRI) to assess berry quality in five commercial vineyards (cv. Xarel·lo) in 2009 and 2010. Measurements of predawn water potential (Ψpd), canopy to air temperature difference, fractional intercepted photosynthetic active radiation (fIPAR), exposed leaf area, and canopy reflectance were taken at veraison. Berry weight, total soluble solids (TSS), and titratable acidity (TA) were determined at harvest. Values of Ψpd indicated mild to moderate water deficits. NDVI characterized the effects of water availability on vine vigor (fIPAR), while PRI was related to water status (Ψpd). The extent of water deficits was a key factor in determining the aptitude of spectral indices at estimating berry quality attributes. Thus, consistent with the influence of vine vigor and water status on berry quality attributes, NDVI was related to both TA (r2 = 0.46) and IMAD (the ratio of TSS to TA; r2 = 0.27), whereas PRI was related to both TSS and IMAD (r2 = 0.23 and r2 = 0.34, respectively). In addition, PRI was positively related to berry weight (r2 = 0.68). The results suggest the potential of reflectance indices of canopy vigor (i.e., NDVI) and photosynthetic functioning (i.e., PRI) at estimating berry quality attributes in vineyards experiencing mild to moderate water deficits.
700 0# - ADDED ENTRY-PERSONAL NAME
PERSONAL NAME Gil Gorchs Altarriba.
700 0# - ADDED ENTRY-PERSONAL NAME
PERSONAL NAME Lydia Serrano Porta.
710 2# - ADDED ENTRY-CORPORATE NAME
CORPORATE NAME Lecturer, Departament d’Enginyeria Agroalimentària i Biotecnologia, Universitat Politècnica de Catalunya, c/ Esteve Terradas 8, 08860 Castelldefels, Barcelona, Spain.
710 2# - ADDED ENTRY-CORPORATE NAME
CORPORATE NAME Assistant Professor Departament d’Enginyeria Agroalimentària i Biotecnologia, Universitat Politècnica de Catalunya, c/ Esteve Terradas 8, 08860 Castelldefels, Barcelona, Spain.
773 0# - SOURCE JOURNAL
Journal title American Journal of Enology and Viticulture.
Related parts (Vol.) 64. (No.) 1. 2013. (Pages.) 88-97.
Page numbers 88-97
Volume number 64
856 42 - ELECTRONIC LOCATION & ACCESS
URI http://ajevonline.org/content/64/1/88.abstract
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OAI set code AJEV
OAI set name American Journal of Enology and Viticulture
100 0# - MAIN ENTRY--PERSONAL NAME
-- 12071
700 0# - ADDED ENTRY-PERSONAL NAME
-- 12072
700 0# - ADDED ENTRY-PERSONAL NAME
-- 12073
710 2# - ADDED ENTRY-CORPORATE NAME
-- 12074
710 2# - ADDED ENTRY-CORPORATE NAME
-- 12075
856 42 - ELECTRONIC LOCATION & ACCESS
-- Link to original article.

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