Stability of Ampelometric Characteristics of Vitis vinifera L. cv. ‘Syrah’ and ‘Sauvignon blanc’ Leaves: Impact of Within-vineyard Variability and Pruning Method/Bud Load

  • P. Bodor Department of Viticulture, Institute of Viticulture and Oenology, Corvinus University of Budapest, 29-43 Villányi Street, H-1118 Budapest, Hungary
  • L. Baranyai Department of Physics and Automatization, Faculty of Food Sciences, Corvinus University of Budapest, 14-16 Somlói Street, H-1118 Budapest, Hungary
  • M. Ladányi Department of Mathematics, Faculty of Horticultural Sciences, Corvinus University of Budapest, 29-43 Villányi Street, H-1118 Budapest, Hungary
  • B. Bálo Róbert Károly College, Research Institute of Viticulture and Enology, KÅ‘lyuktetÅ‘ Pf.: 83. Eger, H-3300, Hungary
  • A.E. Strever Department of Viticulture and Oenology, Stellenbosch University, Private Bag X1, Matieland, 7602, Stellenbosch, South Africa
  • Gy.D. Bisztray Department of Viticulture, Institute of Viticulture and Oenology, Corvinus University of Budapest, 29-43 Villányi Street, H-1118 Budapest, Hungary
  • J.J. Hunter Department of Viticulture and Oenology, Stellenbosch University, Private Bag X1, Matieland, 7602, Stellenbosch, South Africa ARC Infruitec-Nietvoorbij1, Private Bag X5026, 7599, Stellenbosch, South Africa
DOI: https://doi.org/10.21548/34-1-1088

Abstract

Historically, grapevine (Vitis vinifera L.) leaf characterisation has been a driving force in the identification
of cultivars. In this study, ampelometric (foliometric) analysis was done on leaf samples collected from
hand-pruned, mechanically pruned and minimally pruned ‘Sauvignon blanc’ and ‘Syrah’ vines to estimate
the impact of within-vineyard variability and a change in bud load on the stability of leaf properties.
The results showed that within-vineyard variability of ampelometric characteristics was high within a
cultivar, irrespective of bud load. In terms of the O.I.V. coding system, zero to four class differences were
observed between minimum and maximum values of each characteristic. The value of variability of each
characteristic was different between the three levels of bud load and the two cultivars. With respect to bud
load, the number of shoots per vine had a significant effect on the characteristics of the leaf laminae. Single
leaf area and lengths of veins changed significantly for both cultivars, irrespective of treatment, while angle
between veins proved to be a stable characteristic. A large number of biometric data can be recorded on a
single leaf; the data measured on several leaves, however, are not necessarily unique for a specific cultivar.
The leaf characteristics analysed in this study can be divided into two groups according to the response to
a change in bud load, i.e. stable (angles between the veins, depths of sinuses) and variable (length of the
veins, length of the petiole, single leaf area). The variable characteristics are not recommended to be used
in cultivar identification, unless the pruning method/bud load is known.

Downloads

Download data is not yet available.
Published
2016-11-01
Issue
Vol. 34 No. 1 (2013)
Section
Articles

A copyright form will be e-mailed to the corresponding author when the manuscript has been accepted for publication.

 

In principle, the Author agrees to the following when he/she signes the copyright agreement:

I hereby assign to the SOUTH AFRICAN SOCIETY FOR ENOLOGY AND VITICULTURE (SASEV) the copyright of the text, tables, figures, supplementary material, illustrations and other information (the Material) submitted with the manuscript to be published in SOUTH AFRICAN JOURNAL OF ENOLOGY AND VITICULTURE (SAJEV) (the "Article"). The copyright becomes effective from the date the Article has been accepted for publication in SAJEV.

 

This is an open access journal, and the authors and journal should be properly acknowledged, when works are cited.

Author's may use the publishers version for teaching purposes, in books, theses, dissertations, conferences and conference papers.

A copy of the authors' publishers version may also be hosted on the following websites:

  • Non-commercial personal webpage or blog.
  • Institutional webpage.
  • Authors Institutional Repository.

The following notice should accompany such a posting on the website: This is an electronic version of an article published in SAJEV, Volume XXX, number XXX, pages XXX - XXX, DOI.   Authors should also supply a hyperlink to the original paper or indicate where the original paper (www.journals.ac.za/index.php/sajev/) may be found.

Authors publishers version, affiliated with the Stellenbosch University will be automatically deposited in the University's Institutional Repository SUNScholar.

Articles as a whole, may not be re-published with another journal.

The following license applies:

Attribution CC BY-NC-ND 4.0