Abstract
The relationship between tannin content of mature, intact, cured peanut seed and percent seed colonization byAspergillus parasiticus was examined. Tannin content in 9 cultivars, 7 of which were grown in both Tifton, Georgia and Puerto Rico, was significantly correlated with percent seed colonization. For data expressed as mg tannin/g intact seed and mg tannin/g seed coat, correlation coefficients with percent colonization were 0.74 and 0.76, respectively.
Seed coat tannin, methanol-extracted, water-soluble material from peanut seed coats, was testedin vitro for effects on growth ofA. parasiticus. As concentrations of tannins were increased to 7.5%, inhibition of fungal growth increased linearly to 88%; a concentration of 20% produced over 96% inhibition.
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Sanders, T.H., Mixon, A.C. Effect of peanut tannins on percent seed colonization and in vitro growth by aspergillus parasiticus. Mycopathologia 66, 169–173 (1979). https://doi.org/10.1007/BF00683966
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DOI: https://doi.org/10.1007/BF00683966