Comparative Studies on Properties of Five Cucumber M Osaic Virus Isolates Infecting Passiflora in Chin

Comparative studies on biological properties, physical and biochemical properties, morphology and serological relationships of five cucumber mosaic virus (CMV) isolates (PE,PE2,PEf,PC,PF) infecting Passiflora edulis, P. edulis P.edulis var. flavicarpa, P.edulis var. flavicarpa, P.caerulea, P.foetida were carried out. There were differences in host reactions and serological relationships of five CMV isolates. However, similarities were found in viral particle morphology, stability in sap, aphid transmission, molecular weight of coat protein of five CMV isolates. According to the host reactions and serological relationships, these five isolates could be divided into two CMV subgroups, among which PE, PE2,PC,PF belonged to subgroup I and PEf to subgroupII.