+ Site Statistics
+ Search Articles
+ PDF Full Text Service
How our service works
Request PDF Full Text
+ Follow Us
Follow on Facebook
Follow on Twitter
Follow on LinkedIn
+ Subscribe to Site Feeds
Most Shared
PDF Full Text
+ Translate
+ Recently Requested

The effect of leaf removal and canopy height on whole-vine gas exchange and fruit development of Vitis vinifera L. sauvignon blanc



The effect of leaf removal and canopy height on whole-vine gas exchange and fruit development of Vitis vinifera L. sauvignon blanc



Functional Plant Biology 30(6): 711-717



Canopy topping and leaf removal are management practices commonly used in New Zealand vineyards to increase light and pesticide penetration to the fruit zone, thus, reducing disease incidence. Previous research has suggested that an increase in photosynthesis occurs when leaves are removed, and this may compensate for the reduced leaf area. However, it is difficult to extrapolate single-leaf photosynthesis measurements to a whole-plant scale. Therefore the extent of the compensation is unknown. To evaluate the impact of leaf removal and canopy height on whole-vine photosynthesis, treatments were imposed during the lag phase of berry growth. Leaves were removed from the lower quarter of the canopy, or vines were topped to three quarters of the height of control plants, in a two-by-two-factorial design. Both topping and leaf removal caused a decrease in whole-vine photosynthesis immediately after the treatments were imposed. Leaf removal, but not topping height, reduced photosynthesis on a per unit leaf area basis. This suggests that the lower portion of the canopy contributes more than the upper portion of the canopy to whole-vine photosynthesis. When measurements were made again approximately two months later, tall vines without leaf removal had a higher photosynthesis rate than the other treatments. Fruit yield, sugar content, vine carbohydrate reserves and pruning weights followed trends similar to those observed for photosynthesis, suggesting that although some photosynthetic compensation occurred, the defoliation treatments had a negative effect on vine growth.

Please choose payment method:






(PDF emailed within 0-6 h: $19.90)

Accession: 011495412

Download citation: RISBibTeXText

DOI: 10.1071/fp02188


Related references

The effect of early leaf removal on whole-canopy gas exchange and vine performance of Vitis vinifera L. 'Sangiovese'. Vitis: 1, 1-6, 2008

Effect of Early Fruit-Zone Leaf Removal on Canopy Development and Fruit Quality in Riesling and Sauvignon blanc. American Journal of Enology and Viticulture 66(4): 424-434, 2015

Effects of shoot girdling and/or periodic leaf removal on inflorescence primordia initiation and development in Vitis vinifera L. cv. Sauvignon Blanc. Australian Journal of Grape and Wine Research 21(1): 118-122, 2015

The effect of partial defoliation, leaf position and developmental stage of the vine on leaf chlorophyll concentration in relation to the photosynthetic activity and light intensity in the canopy of Vitis vinifera L. cv. Cabernet Sauvignon. South African Journal of Enology and Viticulture 10(2): 67-73, 1989

The effect of partial defoliation leaf position and developmental stage of the vine on leaf chlorophyll concentration in relation to the photosynthetic activity and light intensity in the canopy of vitis vinifera l. cultivar cabernet sauvignon. South African Journal for Enology and Viticulture 10(2): 67-73, 1989

The Influence of Two Methods of Crop Removal at Different Leaf Areas on MATURATION OF SAUVIGNON BLANC (VITIS VINIFERA L.). Journal International Des Sciences de la Vigne Et Du Vin 48(1): 43-50, 2014

Use of fruit zone leaf removal with Vitis vinifera L. cv. Riesling grapevines. I. Effects on canopy structure, microclimate, bud survival, shoot density, and vine vigor. American Journal of Enology and Viticulture 45(2): 123-132, 1994

Distribution of carbon 14 photosynthetate in the shoot of vitis vinifera l. cultivar cabernet sauvignon i. the effect of leaf position and development stage of the vine. South African Journal for Enology and Viticulture 9(1): 3-9, 1988

Effect of Different Irrigation Strategies on Vine Physiology, Yield, GRAPE COMPOSITION AND SENSORY PROFILE OF SAUVIGNON BLANC (VITIS VINIFERA L.) IN A COOL CLIMATE AREA. Journal International Des Sciences de la Vigne Et Du Vin 47(3): 159-181, 2013

The Effect of Leaf Area to Yield Ratio on Secondary Metabolites in GRAPES AND WINES OF VITIS VINIFERA L. CV. SAUVIGNON BLANC. Journal International Des Sciences de la Vigne Et Du Vin 47(2): 83-97, 2013

Effects of Soil Parent Material and Climate on the Performance of Vitis vinifera L. cvs. Sauvignon blanc and Cabernet Sauvignon -PartI.SoilAnalysis,SoilWaterStatus,RootSystemCharacteristics, Leaf Water Potential, Cane Mass and Yield. South African Journal of Enology and Viticulture 33(2): 161-173, 2012

Differential effects of canopy manipulation and shading of Vitis vinifera L. cv. Cabernet Sauvignon. Leaf gas exchange, photosynthetic electron transport rate and sugar accumulation in berries. Vitis 34(4): 201-206, 1995

Effect of vine nitrogen status on grape aromatic potential: Flavor precursors (S-cysteine conjugates), glutathione and phenolic content in Vitis vinifera L. cv. Sauvignon blanc grape juice. Journal International des Sciences de la Vigne et du Vin 40(1): 1-6, 2006

The effect of pre-budbreak cane girdling on the physical and phenological development of the inner and outer arm in Vitis vinifera L. 'Sauvignon blanc' inflorescence structures. Vitis 53(1): 21-28, 2014

The effect of partial defoliation leaf position and developmental stage of the vine on the photosynthetic activity of vitis vinifera l. cultivar cabernet sauvignon. South African Journal for Enology and Viticulture 9(2): 9-15, 1988