الفهرس 
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Abstract
The study was implemented over two successive seasons, 2006 and 2007 in a private vineyard to study the impact of the nematode resistant rootstocks (Dogridge and Harmony) in addition to own-rooted plants on yield, fruit quality (physical and chemical) and the storability of Flame Seedless grapes. The physical (size, texture and color) and chemical properties (TSS, acidity and anthocianine) were improved in varieties grafted on Dogridge and Harmony compared with the own rooted plants. Furthermore, the fruits properties under storage conditions (0±1º and 90 - 95 H) for 60 days were better in the fruits of the own rooted plants than those of the non rooted plants.
Soil samples of different grape vine varieties (commercial or rootstocks) were collected randomly from their rhizosphere during summer season of 2008 to determine the plant parasitic nematode (PPN). Soil samples of Superior, Flame and King Ruby varieties and Harmony rootstocks contained the highest average number of (PPN) while the rootstocks of Freedom, Solt Creek and Dogridg contained the lowest number of (PPN). The most nematodes genera infesting grape vine plantation were root-knot nematode Meliodogyne spp. and Pratylenchus spp.
Stem cuttings (seedlings) of grape vine varieties, Flame seedless Superior, Repear & Cremson and rootstocks of Salt Creek, Dog ridge Freedom & Hrmony were planted in pots in the greenhouse and infected with J2s of M. icogneta. The highest numbers of galls, egg masses, females and J2s in soil or emerged from eggs were found in the Flame, Superior, Cremson and Repear while the lowest number of the same parameters were recorded in the Salt Creek, Freedom, Dog ridge and Harmony. Also the highest numbers of galls, egg masses, females, J2s in soil or emerged from eggs were found in Superior variety grafted on Harmony, Freedom and Salt creek.