An investigation of the Susceptibility of 10 Iranian Grape Cultivars to Lobesia botrana (Lep.: Tortricidae)

European grapevine moth, Lobesia botrana (Lep: Tortricidae), is one of the most significant pests in Iran and the world. This research was conducted in three parts; the first part aims to measure nutritional indices of L. botrana on ten Iranian grapes cultivars, the second part of this study is dedicated to investigating the physical and chemical characteristics of fruit cultivars, and the third part is related to larval host preference and moth egg laying preference. The results illustrated a significant difference between nutritional indices between grape cultivars. The cultivars Sefid Angoor Ghoochan and Sahebi Siah revealed antixenotic and antibiotic properties against larval feeding, and also showed ovipositional antixenosis, demonstrating their relatively high resistance against the aforementioned pest. The cultivars Rotabi Sefid Zarghan and Keshmeshi Bavanat were found to be relatively susceptible cultivars. The findings of the present research offer fundamental information on susceptible and resistant cultivars of grape against the pest L. botrana.