Abstract
Recently, new maize hybrids have been introduced in northern Mexico to reduce importations of grain, which is mainly directed for the production of flour and animal feed. This represents a potential risk to both human and animal health because of the development of fungal pathogens under the local weather conditions; thus, the identification of tolerant hybrids has become a priority. In this way, the objective of this study was to observe the mycoflora development in maize. There were 12 yellow and 10 white seed maize hybrids randomly planted. At harvest time, a grain sample of each plot was collected, surface-sterilized, plated in culture media, and incubated. After 7 days, colonies were observed and analyzed. The major fungi encountered were Fusarium spp., Penicillium spp., and Aspergillus spp. When compared with the yellow hybrids, white hybrids had 34, 52 and 22% less infection by F. verticillioides, Aspergillus flavus, and Aspergillus niger, respectively, and almost the double infection with Penicillium spp. White hybrids presented 51% more healthy grains than the yellow hybrids.
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