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The Aspergillus flavus and aflatoxins are known to be detrimental to plant and animalsaffecting their productivity and yield. This study evaluated effects of toxigenic A. flavus andaflatoxins on physical parameters like seed germination, seedling vigor, root length, shoot lengthand also biochemical parameters like chlorophyll content, protein, sugars and amylase activity insorghum seeds. The sorghum seeds were treated with 100, 250 and 500 μg ml-1 concentrations ofaflatoxins and likewise, A. flavus spore suspension adjusted to 1x108 spores ml-1 were alsotreated to seeds in different treatments. The experimental results revealed maximum inhibition ofseed germination, seedling vigor, chlorophyll, proteins, total sugars and α-amylase activity in thesorghum seedlings was observed at 500 μg ml-1 followed by 250 and 100 μg ml-1. But seedtreatment with toxigenic A. flavus spore suspension showed slight inhibition all the aboveparameters tested when compared to untreated control, but there was no significant decrease wasobserved. The study highlighted negative effects of the A. flavus and aflatoxins on the tested seedquality parameters tested there by necessitating need of monitoring of toxigenic fungi and theirmetabolites in sorghum seeds.

Effect of toxigenic Aspergillus flavus and aflatoxins on seed quality parameters of Sorghum bicolor (L.) Moench.