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Maize silk-browning, maysin content, and antibiosis to the corn earworm, Helicoverpa zea (Boddie)


, : Maize silk-browning, maysin content, and antibiosis to the corn earworm, Helicoverpa zea (Boddie). Maydica 41(1): 13-18

Silks of some maize (Zea mays) genotypes turn brown after wounding, while those of other genotypes do not change colour. The browning response involves the oxidation of flavones to quinones and is believed to be controlled by the p1 locus. A flavone glycoside known as maysin occurs in silks of many genotypes, is a growth retardant to the corn earworm (CEW; Helicoverpa zea) and is among the compounds that undergo a browning reaction.

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Related references

Guo, B.Z.; Widstrom, N.W.; Wiseman, B.R.; Snook, M.E.; Lynch, R.E.; Plaisted, D., 1999: Comparison of silk maysin, antibiosis to corn earworm larvae (Lepidoptera: Noctuidae), and silk browning in crosses of dent x sweet corn. Sweet corn is one of the highest ranking vegetable crops in the United States in terms of both market value and total acreage; it also ranks among the top vegetable crops in terms of pesticide usage. Ear damage caused by insects is the most signif...

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Byrne, P.F.; Mcmullen, M.D.; Wiseman, B.R., 1998: Maize silk maysin concentration and corn earworm antibiosis: QTLs and genetics mechanisms. Crop Science 38(2): 1-71

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