The Indian peanut clump virus is highly infectious on graminaceous plants

The host range of Indian peanut clump virus (IPCV) was studied under natura l infectious conditions on pearl millet, finger millet, sorghum, maize, whe at, barley, rice and groundnut plants sown in a IPCV-infested field and sam pled at regular intervals. Plants were analyzed directly after sampling or transplanted in glasshouse for 6 weeks and than analyzed for virus presence in root and leaf apices by DAS-ELISA as well as for Polymyxa presence in r oots. IPCV infects all graminaceous species test-ed with infection being de tected already within 12 days of sowing. The mean rate of infection during the rainy season was respectively for wheat: 92 %, barley: 69 %, maize: 38 %, finger millet: 29 %, sorghum: 26 %, groundnut: 22 %, rice: 4 % and final ly pearl millet: 3 %. Depending on the species, the virus migrated from roo ts to shoots in all or only few infected plants or was never detected in le aves. Wheat, barley and groundnut presented symptoms.