Abstract
This study was carried out during the years 2008 and 2009 at the Research and Agricultural Experimental Station in Dirab, King Saud University, Saudi Arabia in order to study the comparative effect of some grapevine cultivars grown under arid environments and irrigated with treated domestic wastewater on leaf petiole mineral and fruit heavy metals content. The data indicated that the leaf petiole N content of Thompson seedless Perlette, Des El-Anz and White Shatta were similar and lower than that of Flame seedless, King Ruby, Soltany, Halawany and Red Glop. Flame seedless had lower P content than all other cultivars, except Taify, Des El-Anz and Perlette. Flame seedless, Perlette and Thompson seedless had similar and significantly lower leaf petiole K content than all other cultivars. Flame seedless and Thompson seedless had similar and lower Ca2+ content than all other cultivars, except Des El-Anz and Halawany. Thompson seedless had significantly higher leaf petiole Mg than white Shatta, Perlette, Des El-Anz, Taify, Soltany and Red Glop cultivars. Sodium content in Red Glop, Perlette and King Ruby was similar and higher than all other cultivars. In addition, Taify had significantly higher Fe than King Ruby, Des El-Anz and Soltany cultivars. Flame seedless had significantly higher Zn and Mn than all other cultivars, except White Shatta and Soltany. The Des El-Anz, Taify, Kamaly, Soltany and White Shatta cultivars had similar and higher fruit Cu content than Thompson seedless, Flame seedless, Red Glop and King Ruby. Moreover, Des El-Anz had significantly higher fruit Cd content than all other cultivars, except Taify, Soltany and Halawany. Fruit NO3-of Flame seedless and Kamaly was similar and higher than those of all other cultivars, except Soltany and King Ruby. Kamaly, Flame seedless and Soltany had similar and higher fruit NO2- than King Ruby, Red Glop, Perlette and Thompson seedless. A significant interaction effect between the different cultivars and years on leaf petiole mineral (except Na and Cu) and fruit NO3, and Cd contents was obtained.

Key words: Grapevines, leaf petiole mineral, wastewater, arid environments, fruit heavy metals, comparative studies