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Agronomy 2012, 2(1), 28-39; doi:10.3390/agronomy2010028
Article

Evaluation of Maize Germplasm for Resistance to Aflatoxin Accumulation

1,* , 1
 and 2
Received: 12 February 2012; in revised form: 6 March 2012 / Accepted: 7 March 2012 / Published: 14 March 2012
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Abstract: Aflatoxin contamination of maize grain threatens human food and animal feed safety. Breeding for reduced grain aflatoxin accumulation is one of the best strategies presently available to lower grain aflatoxin accumulation. Previously identified sources of germplasm with reduced grain aflatoxin accumulation are excessively tall and late maturing. The objective of this research was to screen germplasm and identify potential sources of aflatoxin resistance. KO679Y and CUBA117:S15-101-001-B-B-B-B inbreds were evaluated for aflatoxin accumulation alongside resistant and susceptible checks with both performing well. These two lines were also evaluated in various crosses. KO679Y performed especially well in crosses with Mp494 and Mp717, resulting in low ear rot and very low aflatoxin levels, but not well in other crosses. A breeding cross including CUBA117:S15-101-001-B-B-B-B as a parent accumulated low levels of aflatoxin both years it was evaluated. Lines resulting from these crosses are being advanced for further evaluation and improvement. KO679Y and CUBA117:S15-101-001-B-B-B-B may prove useful for breeders seeking germplasm sources for ear rot and mycotoxin reduction, especially KO679Y which matures a week earlier and is approximately 25% shorter than current lines resistant to grain aflatoxin accumulation.
Keywords: Zea mays; Aspergillus flavus; aflatoxin; inbred; KO679Y; hybrid; single cross Zea mays; Aspergillus flavus; aflatoxin; inbred; KO679Y; hybrid; single cross
This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

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MDPI and ACS Style

Henry, W.B.; Windham, G.L.; Blanco, M.H. Evaluation of Maize Germplasm for Resistance to Aflatoxin Accumulation. Agronomy 2012, 2, 28-39.

AMA Style

Henry WB, Windham GL, Blanco MH. Evaluation of Maize Germplasm for Resistance to Aflatoxin Accumulation. Agronomy. 2012; 2(1):28-39.

Chicago/Turabian Style

Henry, W. Brien; Windham, Gary L.; Blanco, Michael H. 2012. "Evaluation of Maize Germplasm for Resistance to Aflatoxin Accumulation." Agronomy 2, no. 1: 28-39.

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