EurekaMag.com logo
+ Site Statistics
References:
52,725,316
Abstracts:
28,411,598
+ Search Articles
+ Subscribe to Site Feeds
EurekaMag Most Shared ContentMost Shared
EurekaMag PDF Full Text ContentPDF Full Text
+ PDF Full Text
Request PDF Full TextRequest PDF Full Text
+ Follow Us
Follow on FacebookFollow on Facebook
Follow on TwitterFollow on Twitter
Follow on Google+Follow on Google+
Follow on LinkedInFollow on LinkedIn

+ Translate

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






Maydica 41(1): 13-18

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

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.


Accession: 002889125



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...

Guo, B.Z.; Widstrom, N.W.; Wiseman, B.R., 1999: Comparison of silk maysin, antibiosis to corn earworm larvae (Lepidoptera: Noctuidae), and silk browning in crosses of dent (times) sweet corn. Journal of Economic Entomology 92(3): 6-53

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

Byrne, P.F.; McMullen, M.D.; Wiseman, B.R.; Snook, M.E.; Musket, T.A.; Theuri, J.M.; Widstrom, N.W.; Coe, E.H., 1998: Maize silk maysin concentration and corn earworm antibiosis: QTLs and genetic mechanisms. Growth of the corn earworm (Helicoverpa zea Boddie), a major pest of maize (Zea mays L.), is inhibited by high concentrations of maysin, a C-glycosyl flavone, in maize silks. To advance understanding of the genetic control of silk maysin concentra...

Byrne, P.F.; Darrah, L.L.; Moellenbeck, D.J.; Barry, B.D.; Snook, M.E.; Wiseman, B.R.; Widstrom, N.W., 1994: Silk browning, maysin content, and corn earworm resistance. In populations from a maize breeding programme, selection for silks which do or do not brown on wounding resulted in subpopulations with high and undetectable levels of silk maysin, respectively. In a bioassay with Helicoverpa zea, the browning su...

Javaid, I.; Dadson, R.B.; Hashem, F.M.; Joshi, J.M.; Allen, A.L., 2005: Antibiosis to corn earworm, Helicoverpa zea Boddie by cowpea genotypes. Corn earworm (Helicoverpa zea Boddie) is a pest of cowpea in many regions of the United States. The larvae chew round holes in cowpea pods to feed on the developing grains, and thus, affect the yield and seed quality. Studies were conducted to ide...

Joshi, J.M.; Javaid, I.; Dadson, R.B.; Nobakht, M., 1992: Antibiosis to corn earworm (Helicoverpa zea (Boddie)) by vegetable soybean cultivars. In laboratory tests of 6 soyabean cultivars, Sanga, Peking and Oakland were comparatively susceptible to the noctuid Helicoverpa zea, and Fuji, Kim and Toano showed a moderate level of leaf feeding resistance.

Widstrom, N.; Waiss, A.J.1; Mcmillian, W.1; Wiseman, B.1; Elliger, C.1; Zuber, M.1; Straub, R.1; Brewbaker, J.1; Darrah, L.1; Henson, A.1; Arnold, J.1; Overman, J., 1982: Maysin content of silks of nine maize genotypes grown in diverse environments Flavone, Antibiosis, host plant resistance, corn earworm, Heliothis zea. Crop science 22(5): 953-955

Guo, B.Z.; Zhang, Z.J.; Li, R.G.; Widstrom, N.W.; Snook, M.E.; Lynch, R.E.; Plaisted, D., 2001: Restriction fragment length polymorphism markers associated with silk maysin, antibiosis to corn earworm (Lepidoptera: Noctuidae) larvae, in a dent and sweet corn cross. Maysin, a C-glycosylflavone in maize silk, has insecticidal activity against corn ear-worm, Helicoverpa zea (Boddie), larvae. Sweet corn, Zea mays L., is a vulnerable crop to ear-feeding insects and requires pesticide protection from ear damage. T...

Lee, E.A.; Byrne, P.F.; McMullen, M.D.; Snook, M.E.; Wiseman, B.R.; Widstrom, N.W.; Coe, E.H., 1998: Genetic mechanisms underlying apimaysin and maysin synthesis and corn earworm antibiosis in maize (Zea mays L.). C-glycosyl flavones in maize silks confer resistance (i.e., antibiosis) to corn earworm (Helicoverpa zea [Boddie]) larvae and are distinguished by their B-ring substitutions, with maysin and apimaysin being the di- and monohydroxy B-ring forms, re...