Evaluation of Elite Maize Inbred Lines for ReducedAspergillus flavusInfection, Aflatoxin Accumulation, and Agronomic Traits
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Mycotoxins produced by the fungus Aspergillus flavus are harmful to humans and animals and result in large economic losses. Developing and disseminating resistant germplasm is a critical component to reduce or eliminate the accumulation of preharvest aflatoxins in maize (Zea mays L.). Ninetythree different inbred lines were evaluated for seven standard agronomic traits during the years of 2012 to 2016 in two locations (nine environments), and inoculated with A. flavus. Multiple inbreds were both lower accumulating for aflatoxins and higher yielding than aflatoxin tolerant and high yielding checks. The top seven inbred lines on average had an aflatoxin value of 14.1 ng g and an average yield of 3.2 Mg ha, while the susceptible checks were 185.9 ng g and 2.5 Mg ha, respectively. Several inbred lines evaluated in this study have high potential utility in future maize improvement research, such as breeding for resistance, segregating populations for genetic mapping as well as in direct use in hybrids with genetically improved resistance to A. flavus.
author list (cited authors)
Pekar, J. J., Murray, S. C., Isakeit, T. S., Scully, B. T., Guo, B., Knoll, J. E., ... Xu, W.
complete list of authors
Pekar, Jacob J||Murray, Seth C||Isakeit, Thomas S||Scully, Brian T||Guo, Baozhu||Knoll, Joseph E||Ni, Xinzhi||Abbas, Hamed K||Williams, Paul||Xu, Wenwei