TY - JOUR N2 - Potato virus Y (PVY) is one of the most destructive viruses infecting potato in Egypt and worldwide. Recent research has shown that a necrotic PVY-NTN strain is infecting potato in Upper Egypt. Chemical control is not effective to control this viral pathogen. An alternative to control PVY infecting potato is using a mild PVY strain to elicit systemic cross protection in potato plants against infection with a severe necrotic strain of PVY. Results of this study showed that a PVY necrotic strain produced a significant lesser number of local lesions on diagnostic plants (Robinia pseudoacacia L.) when these plants were treated first with a mild PVY strain. Data obtained from greenhouse and field experiments indicated that treatment of potato plants (variety Burna) with a mild PVY strain significantly protected potato from infection with a severe necrotic PVY strain, and resulted in a significant increase in tuber yield compared with infected plants without prior treatment with a mild PVY strain. The highest increase in potato tuber yield was obtained when potato plants were inoculated with a mild PVY strain 3 days before challenging with the severe necrotic PVY strain. This study proved that using a mild strain of PVY can significantly protect potato plants from infection with a severe strain of this virus under both greenhouse and field conditions and can present a potential method to reduce losses due to infection of this virus in Assiut governorate and Upper Egypt. L1 - http://www.journals.pan.pl/Content/103668/PDF/JPPR_58_2_04_Abdalla.pdf L2 - http://www.journals.pan.pl/Content/103668 PY - 2018 IS - No 2 DO - 10.24425/119130 KW - cross protection KW - mild strain KW - potato KW - Potato virus Y (PVY) KW - severe strain A1 - Abdalla, Osama A. A1 - Eraky, Amal I. A1 - Mohamed, Safynaz A. A1 - Fahmy, Fikry G. PB - Committee of Plant Protection PAS PB - Institute of Plant Protection – National Research Institute VL - vol. 58 DA - 2018.07.31 T1 - Management of Potato virus Y (PVY–NTN) causing potato tuber necrotic ringspot disease (PTNRD) in potato by prior treatment with a mild PVY strain UR - http://www.journals.pan.pl/dlibra/publication/edition/103668 T2 - Journal of Plant Protection Research ER -