Abstract

Rehydrated, mature, undamaged seed of 502 peanut (Arachis hypogaea L.) genotypes were scarified, inoculated with an aflatoxigenic strain of Aspergillus flavus Link, and tested for aflatoxin B₁ production after incubation at 25 C for 10 days. All genotypes supported production of aflatoxin B₁ but significant genotypic differences in levels of aflatoxin B₁ production were found. Genotypes U 4-7-5 and VRR 245 supported the lowest levels of aflatoxin B₁ (< 10 μg/g seed), whereas the commonly grown Indian cultivar TMV 2 supported production of aflatoxin B₁ at levels of over 150 μg/g seed. Eight genotypes with low, moderate or high capacity to support aflatoxin B₁ production were further tested using seed from one rainy season crop, and two irrigated postrainy season crops. Genotypic differences in levels of aflatoxin B₁ production were consistent over seasons. Production levels were slightly lower in seed from the rainy season crop than in seed from the two postrainy season crops.

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Keywords: Groundnuts, Aspergillus flavus Link, Arachis hypogaea L., mycotoxins

How to Cite:

Mehan, V. & McDonald, D. & Ramakrishna, N., (1986) “Varietal Resistance in Peanut to Aflatoxin Production¹”, Peanut Science 13(1), p.7-10. doi: https://doi.org/10.3146/i0095-3679-13-1-3

Author Notes

¹Submitted as Journal Article No. 548 by the International Crops Research Institute for the Semi-Arid Tropical (ICRISAT).