OBSERVATION OF THREE VIRUSES DISEASE OF THE CEREAL BY ELECTRON MICROSCOPE First evidence for occurrence of Sweet potato virus disease (SPVD) caused by dual infection of  Sweet potato feathery mottle virus and Sweet potato chlorotic stunt  virus in China EVALUATION FOR LOSSES CAUSED BY THE MOSAIC VIRUS DISEASES IN TOBACCO Detection of pathogenic organisms in Medicago sativa in Zhangye, Gansu Province ELISA Detection of Infectious Pathogenic Viruses and Variation of CMV from Squash in Chongqing ELISA Detection of Infectious Pathogenic Viruses and Variation of CMV from Squash in Chongqing THE RELATIONSHIP BETWEEN MIGRATION DYNAMICS OF APHID VECTORS AND EPIDEMIC OF PEPPER VIRUS DISEASES REVIEW OF VIRUS DISEASES TRANSMITTED BY ERIOPHYID MITES OCCURRENCE OF VIRUS DISEASES OF PASSIFLORA SPP.AND SUBGROUPING OF CUCUMBER MOSAIC CVCUMOVIRVS IN FUJIAN MAIN FACTORS AND THE MODEL FOR FORECASTING OF TOBACCO VIRAL DISEASES TRANSMITTEDBY APIHDS Methodology for identification of disease resistance of sweet potato cultivars to sweet potato virus disease and yield loss estimation Study on virus diseases of Dioscorea opposita Preliminary Identification and Analyses of Viruses Causing Pepper Virus Disease in Chongqing,China STUDIES ON ECOLOGICAL CONTROL OF VIRUS DISEASES ON WEIQING RADISH STUDY ON THE EFFICACIES OF WHEAT-PEPPER INTERPLANTATION TO EVADE APHID DAMAGE AND ALLEVIATE VIRUS DISEASE Study on virus identification and controlled effect on some virus diseases in vegetable of Cucurbitaceae THE OCCURRENCE OF A POTYVIRUS IN AILANTHUS ALTISSIMA MILL,IN CHINA Preliminary Identification and Analyses of Viruses Causing Pepper Virus Disease in Chongqing,China ISOTOPIC DIAGNOSIS AND MOLECULAR IDENTIFICATION OF CUCUMBER MOSAIC VIRUS AND SATELLITE RNA INFECTING TOMATO IN SHANGHAI IDENTIFICATION OF THE PATHOGEN AND CONTROL OF THE WHEAT SPINDLE STREAK MOSAIC DISEASE IN ANHUI PROVINCE IDENTIFICATION AND CONTROL OF MUSKMELON VIRUS DISEASES IN XINJIANG AND GANSU PROVINCE OF CHINA CONTROL OF PEANUT VIRUS DISEASES IN BEIJING AREAS Marker-assisted Selection for Stv-bi Gene Controlling Resistance to Rice Stripe Disease Rice Breeding for Resistance to Stripe Virus Disease