2012
DOI: 10.1007/s10658-012-9938-z
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Effect of grapevine training systems on susceptibility of berries to infection by Erysiphe necator

Abstract: The effect of two training systems on the development of powdery mildew caused by Erysiphe necator in berries of Chardonnay and Cabernet Sauvignon grapevines was examined. Disease development was monitored on berries from vines trained to either vertical shoot positioning or as free-positioned, topped vines with no foliage support wires. No fungicides were applied and powdery mildew development was recorded following artificial inoculation of young berries. Disease incidence was higher in berries collected fro… Show more

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Cited by 10 publications
(8 citation statements)
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“…Shaded P. viticola infected leaves, besides showing the lower content of flavonoids compared to full light exposed ones, also displayed the highest disease severity [69]. A similar result was obtained with the artificial inoculation of detached berries with E. necator: in this case shaded berries showed the highest susceptibility to the pathogen [79].…”
Section: • Constitutive Compoundssupporting
confidence: 68%
“…Shaded P. viticola infected leaves, besides showing the lower content of flavonoids compared to full light exposed ones, also displayed the highest disease severity [69]. A similar result was obtained with the artificial inoculation of detached berries with E. necator: in this case shaded berries showed the highest susceptibility to the pathogen [79].…”
Section: • Constitutive Compoundssupporting
confidence: 68%
“…Other practices, such as thinning of old leaves, will decrease the photosynthesis of younger leaves, thereby potentially delaying their ontogenic resistance, whereas shoot topping of younger leaves does not impact leaf photosynthesis per unit of leaf area (Petrie et al, 2003). Consequently, thinning might be less favorable to increasing leaf resistance than shoot topping, without considering the potentially positive effect of light on tissue receptivity (Zahavi and Reuveni, 2012). Other cultural practices, such as minimal pruning, which results in increased shoot numbers, reduce leaf and shoot size, and more synchronous leaves emergence (Poni et al, 2000), could allow the plant to escape disease by simultaneously causing all leaves to behave as a source.…”
Section: Discussionmentioning
confidence: 99%
“…For powdery mildew, the process has been underscored for berries, on which infection stops when berry sugar content reaches 8% (Delp, 1954), and it is characterized by a low penetration rate of infectious structures following potential modification of the structure and chemical composition of the cuticle (Ficke et al, 2002). The level of irradiance received before inoculation can strengthen ontogenic resistance through modifications of berry physiology, such as decreases in pH and K concentration and increases in polyphenol and anthocyanin concentrations (Zahavi and Reuveni, 2012). Ontogenic resistance also exists in mature leaves, which suffer less infection (Doster and Schnathorst, 1985).…”
Section: Introductionmentioning
confidence: 99%
“…A good training system is an important foundation for manipulations of tree planting arrangement and canopy geometry to improve the penetration and distribution of photosynthetically active radiation ( PAR ) for the purpose of optimizing photosynthetic carbon fixation and fruit quality [ 1 ]. Canopy structure can alter microclimate conditions (temperature, humidity and other environmental factors) and thereby indirectly affect disease incidence [ 2 , 3 ]. Currently, there are various training systems used for growing pears, such as the spindle system, open vase system, trellis system and so on.…”
Section: Introductionmentioning
confidence: 99%