Deconvoluting effects of vine and soil properties on grape berry composition. (21st May 2014)

• Record Type: Journal Article
• Authors: Zerihun, Ayalsew; McClymont, Lexie; Lanyon, Dean; Goodwin, Ian; Gibberd, Mark
• Is Part Of: Journal of the science of food and agriculture. Volume 95:Number 1(2015:Jan. 15)
• Page Start: 193
• Page End: 203
• Publication Date: 2014-05-21
• Subjects: Food -- Periodicals; Agriculture -- Periodicals; 664
• DOI: 10.1002/jsfa.6705
• Languages: English
• ISSNs: 0022-5142

Abstract

<abstract abstract-type="main" id="jsfa6705-abs-0001"> <title>Abstract</title> <sec id="jsfa6705-sec-0001" sec-type="section"> <title>BACKGROUND</title> <p id="jsfa6705-para-0001">Grape berry composition is influenced by several factors including grapevine and soil properties and their interactions. Understanding how these factors interact to determine berry composition is integral to producing berries with desired composition. Here we used extensive spatio‐temporal data to identify significant vine and soil features that influence Shiraz berry composition.</p> </sec> <sec id="jsfa6705-sec-0002" sec-type="section"> <title>RESULTS</title> <p id="jsfa6705-para-0002">The concentrations of berry flavonoids (anthocyanins, tannin and total phenolics), total soluble solids and pH were typically negatively associated with <italic>canopy</italic>, <italic>crop</italic> and <italic>berry size factors</italic> whereas titratable acidity was positively associated. The strengths of the associations, however, were generally greater with the <italic>crop</italic> and <italic>berry size factors</italic> than with the <italic>canopy size factor</italic>. The analyses also resolved separate influences of <italic>berry</italic> and <italic>crop size</italic> on berry composition. Soil properties had significant influences on berry composition; however, when influences of <italic>soil factors</italic> on vine‐attributes were accounted for, the apparent effects of <italic>soil factors</italic> on berry composition were largely non‐existent.</p> </sec> <sec id="jsfa6705-sec-0003" sec-type="section"> <title>CONCLUSION</title> <p id="jsfa6705-para-0003">At each site, variations in berry composition were more strongly associated with <italic>crop</italic> and <italic>berry size</italic> than with <italic>canopy size</italic> factors. Apparent influences of soil properties on berry composition are indirect, being mediated via their effects on vine attributes (<italic>canopy</italic>, <italic>crop</italic> and <italic>berry sizes</italic>). © 2014 Society of Chemical Industry</p> </sec> </abstract>