Aflatoxin contamination has posed serious problems in commerce and international trade of chillies because of stringent quality standards imposed on aflatoxin contamination by many importing countries. One way to prevent the aflatoxin contamination is to identify the sources of resistance in chilli genotypes. A total of 99 chilli genotypes were screened under artificial conditions in the laboratory using pinprick method of inoculation against aflatoxin contamination caused by Aspergillusflavus. The reaction of fruit infection was graded on 0–5 scale. None of them showed immune reaction. However, one genotype BK-21-SPS-06 showed resistant reaction to A flavus infection. Genotypes IC-26, BK-32, BK X Kubinal, SH-KC-23, LCA-206 and VNK-3C showed moderately resistant reaction. Twenty one genotypes showed moderately susceptible, 31 showed susceptible and remaining 40 genotypes showed highly susceptible reaction. Such resistant source can be used to incorporate their resistant genes in the background of some of these popular varieties which have high demand for export purpose. In the host range studies, A. flavus AF1 isolate colonized all the different hosts used for the study with varied per cent of infection. The highest per cent infection (70.66) was recorded on fig fruit followed by onion (60.33), groundnut (52.00), maize (41.33), sesame (27.33) and the least infection was noticed on paddy grains (17.66%), indicating a wide host range among field and horticultural crops in elaborating aflatoxin contamination.
