Dilution Average number of local lesion /leaf*
undiluted 40
10-1 30
10-2 16
10-3 10
10-4 04
10-5 00
10-6 00
*Average number of local lesions/plant bases on three experiments with 3 plant of C. amaranticolor having 6 leaves each.
Table 2: Effect of dilution of crud sap on the infectivity of virus.