Comparison of Aflatoxin Production in Normal- and High-Oleic Backcross-Derived Peanut Lines

Xue, H. Q. and Isleib, T. G. and Payne, G. A. and et al, . (2003) Comparison of Aflatoxin Production in Normal- and High-Oleic Backcross-Derived Peanut Lines. Plant Disease, 87 (11). pp. 1360-1365.

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The effect of the high-oleate trait of peanut on aflatoxin production was tested by comparing normal oleic lines with high-oleic backcross-derived lines. Seeds were blanched, quartered, and inoculated with Aspergillus flavus conidia, placed on moistened filter paper in petri dishes, and incubated for 8 days. In one experiment, dishes were stacked in plastic bags in a Latin square design with bags and positions in stacks as blocking variables. High-oleic lines averaged nearly twice as much aflatoxin as normal lines. Background genotype had no significant effect on aflatoxin content, and interaction between background genotype and oleate level was not detected. In a second experiment, dishes were arranged on plastic trays enclosed in plastic bags and stacked with PVC spacers between trays. Fungal growth and aflatoxin production were greater than in the first experiment. Background genotype, oleate level, and their interaction were significant. The mean of high-oleic lines was almost twice that of normal lines, but the magnitude of the difference varied with background genotype. Special care should be taken with high-oleic lines to prevent growth of Aspergillus spp. and concomitant development of aflatoxin contamination.

Item Type: Article
Additional Information: We thank the Peanut Foundation for its financial support for this study, and Winston Hagler and Hunter Edwards of the NCSU Mycotoxin Laboratory for their help in conducting the aflatoxin assays.
Uncontrolled Keywords: Arachis hypogaea
Author Affiliation: Dept. of Crop Science, Box 7629, N.C. State Univ., Raleigh, NC 27695-7629
Subjects: Plant Protection
Divisions: Groundnut
Depositing User: Mr Siva Shankar
Date Deposited: 13 Aug 2012 12:09
Last Modified: 13 Aug 2012 12:10

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