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Table 3 Percentage of leaves with galls (LWG) and galls per infested leaf (GIL), for five grape cultivars, in Juanicó and Progreso, Uruguay

From: Life history and assessment of grapevine phylloxera leaf galling incidence on Vitis species in Uruguay

Growing season Cultivar Juanicó Progreso
Mean LWG Mean GIL MeanLWG Mean GIL
2004–2005 3309C 58.10 a* 45.36 a     
Chardonnay 1.20 c 4.33 d 51.79 b 21.39 d
C. Sauvignon 31.81 b 16.16 d 67.70 ab 70.25 a
Viognier 37.05 ab 17.80 d 70.40 ab 55.94 b
Tannat** 0.00     0.00    
2005–2006 3309C 55.74 a 28.63 b     
Chardonnay 2.86 c 16.31 d 8.80 cd 14.36 e
C. Sauvignon 23.00 b 23.05 c 6.68 d 5.79 e
Viognier 14.51 bc 13.55 d 22.09 c 12.25 e
Tannat 0.00     0.00    
2006–2007 3309C         
Chardonnay      81.18 a 30.18 c
C. Sauvignon 43.99 a 30.63 b 54.05 b 33.08 c
Viognier 46.11 a 29.20 b 70.72 ab 32.12 c
Tannat 0.00     0.00    
  1. * Numbers in a column followed by the same letter are not statistically different (P > 0.05) according to the χ2 test when comparing the cultivars in each locality.
  2. ** Tannat was not included in the statistical analysis.