Evaluation of Different Grape Varieties for Resistance to Powdery Mildew Caused by Uncinula Necator
Powdery mildew is one of the most serious and destructive diseases of grapes around the world including Iran. Although the application of chemical pesticides is the most common control method, the use of resistant varieties may be the most effective and environmentally sound strategy for managing the disease. Fourteen grape varieties were evaluated for testing powdery mildew (Uncinula necator) resistance under natural infection conditions and artificial inoculation methods were used during 2007-2008 in Ardabil province of Iran. Disease severity on leaves and fruit (cluster) were evaluated using Voytovich (1987) procedure. Results of the experiments showed that Shahani, Yagothi and Tabrizkishmishi cultivars were immune, Sahibi cultivar was highly resistant, Agshilig and Tokoulgan were resistant, Kishmishi, Khalili and Tabarzeh cultivars were tolerant, Aldarag and Koupakbogan were susceptible and Garashilig, Seyrakpousteh and Rasmi cultivars were highly susceptible to the disease. In general, results of this study were promising and some immune, highly resistant and resistant cultivars to U. necator were identified and they may be used as a resistance genetic source for management of the disease in national and international programs.
Adam-Blondon A. F., Roux C., Claux D., Butterlin G., Merdinoğlu D., This P. 2004. Mapping 245 SSR makers on the Vitis vinifera genome: A tool for grape genetics. Theor. Appl. Genet. 109: 1017-1022.
Ahoonmanesh A. 1999. Principles of Plant Disease Control. Isfahan University of Technology Publication, 324 pp.
Behdad E. 1988. Pests and Diseases of Forest Trees, Shrubs and Ornamental Plants of Iran. Esfahan, Sepehr Publication, 806 pp.
Carisse O., Bacon R., Lasnier J., Mcfadden-Smith W. 2006. Identification guide to the major diseases of grape. Canada Publication. Cat. No. A Agriculture and Agri-Food: 52-74.
Doster M. A., Schnathorst W. C. 1985. Comparative susceptibility of various grapevines Cultivars to the powdery mildew fungus. Uncinula necator.Am. J. Enol. Vitic. 36: 101-104.
Eibach R. 1994. Investigation about the genetic resources of grapes with regard to resistance characteristics to powdery mildew (Oidium tuckeri). Vitis 33: 143-150.
Fang Z. 1979. Methods in Plant Pathology. Agricultural Press. Beijing P. R. China., 345 pp.
Gaunt R. E. 1995. The relationship between plant disease severity and yield. Ann. Rev. Phytopathol. 33: 119-144.
He P. 1993. Genetic studies of resistance to powdery mildew in the F1 generation of site-specific hybridization of Vitis. Intern. Symp. On Horticultural Crop Improvement and Utilization. Beijing P. R. China, September 1993.
Jarvis W. R., Gubler W. D. Grove G. G. 2002. Epidemiology of powdery mildew in agricultural pathosystems. p. 169-199. In: "The powdery mildew: A Comprehensive Treatise" (R. R. Belanger W. R. Bushnell A. J. Dik T. L. Carver, eds.). APS Press, St. Paul, MN, USA
Lenne J. M., Wood D. 1991. Plant disease and the use of wild germplasm. Ann. Rev. Phytopathol. 29: 35-63.
Nelson M. M., Gubler W. D., Shaw D. V. 1995. Inheritance of powdery mildew resistance in greenhouse grow versus field-grow California strawberry progenies. Phytopathology 85: 421-424.
Staudt G. 1997. Evaluation of grapevine powdery mildew (Uncinula necator, anamorph Oidium tuckeri) in accessions of Vitis Species. Bachelhurst. Merzhausen Germany. Vitis 36 (3): 151-154.
Voytovich K. A. 1987. Resistant New Edible Grapes Cultivars to Plant Pests and Diseases. Chisinau. Moldova. Kartya Moldovenyaske, 225 pp.
Wang Y., Liu Y., He P., Chen J., Lamikanra O., Lu J. 1995. Evaluation of foliar resistance to Uncinula necator in Chinese wild Vitis species. Vitis 34 (3): 159-164.
Wang Y. 1993. Genetic studies on resistance to powdery mildew Uncinula necator of wild Chinese Vitis species. Ph.D. Thesis. Northwestern Agriculture University Yangling. Shaanxi P. R. China, 85 pp.
Wayne F., Wilcox W. F. 2003. Grapevine Powdery Mildew Uncinula necator. Cornell University, Davis, Geneva NY.
Zhang F., Lou F., Gu D. 1989. Study on germplasm resources of wild Chinese species of Vitis. Proc. 5th Intern. Symp. On Grape Breeding. Sept. 12-16 1989. Germany. Vitis. Special Issue I, 50 pp.