Authors
Zagrai Ioan¹, Luminita Zagrai¹, Ligia Ion^2
1Fruit Research and Development Station Bistrita, 3, Drumul Dumitrei Nou Street, 420127, Bistrita, Romania
²University of Agricultural Science and Veterinary Medicine, Marasti Street,no. 59, Bucuresti, Romania


Abstract
Three genotypes of Prunus (Mirobolan BN 4Kr – a mutant of Prunus cerasifera, Local de Drăgăsani – a selection of Prunus insititia, and Čačanska Najbolia cv. - Prunus domestica) were evaluated for PPV resistance based on their response to PPV-D and PPVRec strains, after inoculation by budding. Both PPV-D and PPV-Rec strains were translocated from the inoculum buds to Myrobolan BN 4Kr but the virus was able to induce only a limited infection, indicating a possible inhibition of virus replication. The response of Local de Dragasani to inoculation with the two PPV strains revealed a typical hypersensitivity reaction which could be a promising natural resistance source to PPV. The infection with both D and Rec strains became systemic in Čačanska Najbolia and no evidence of an effective inhibition of virus replication.