Transmission and Host Range of Papaya Ring Spot Virus

Papaya belongs to the family Caricaceae.The papaya ring spot virus disease (PRSV) is a well-known aphid and sap transmissible plant pathogenic virus in the genus and family .Among viral diseases, papaya ring spot virus is a wide spread pathogen Potyvirus Potyviridae that can cause up to 90% yield losses in papaya .The symptoms on mechanical transmission were characterized by vein clearing followed by chlorosis, yellow mosaic, blistering and leaf distortion.Later on necrotic spots developed leading to complete necrosis of leaves, petioles and stem.The result on aphid transmission revealed that, three aphid spp.and transmit the viz.Aphis gossypii, Aphis craccivora Myzus persicae virus in non -persistent manner from papaya ( ) to papaya.was more efficient (90 %) than (80%). Carica papayaMyzus persicae Aphis gossypii The, papaya ring spot virus was easily mechanically transmitted in papaya, cucurbits and some other plants.Experimental findings showed that the virus was successfully transmitted by the sap inoculation method in plants belonging to families Caricaceae ( ), viz.Carica papaya cucurbitaceae ( , with C. sativus, Cucurbita moschata C. pepo,