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  • 1
    Electronic Resource
    Electronic Resource
    Combining ability in maize for fall armyworm and southwestern corn borer resistance based on a laboratory bioassay for larval growth (1995)
    Springer
    Theoretical and applied genetics 90 (1995), S. 275-278 
    Details
    ISSN: 1432-2242
    Keywords: Combining ability ; Host plant resistance Maize ; Fall armyworm ; Southwestern corn borer
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Abstract The fall armyworm, Spodoptera frugiperda (J. E. Smith), and southwestern corn borer, Diatraea grandiosella Dyar, are major insect pests of maize, Zea mays L., in the southern USA. Both insects feed extensively on leaves of plants in the whorl stage of growth. A diallel cross of seven inbred lines with different levels of susceptibility to leaf feeding damage in the field was evaluated in a laboratory bioassay for fall armyworm and southwestern corn borer larval growth. Diets were prepared from lyophilized leaf tissue of field-grown plants of the inbred lines and their 21 F1 hybrids. One inbred line, Tx601, exhibited heavy leaf damage in field tests but showed moderate resistance in the laboratory bioassay. Both general and specific combining ability were highly significant sources of variation in the inheritance of fall armyworm and south-western corn borer larval growth in the laboratory bioassay. Tx601 showed excellent general combining ability for reduced larval growth of both species.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00222214
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  • 2
    Electronic Resource
    Electronic Resource
    Identification of the sex attractant pheromone of the southwestern corn borerDiatraea grandiosella Dyar (1986)
    Springer
    Journal of chemical ecology 12 (1986), S. 2051-2063 
    Details
    ISSN: 1573-1561
    Keywords: Southwestern corn borer pheromone ; Diatraea grandiosella Dyar ; Lepidoptera ; Pyralidae ; (Z)-9-hexadecenal ; (Z)-11-hexadecenal ; (Z)-13-octadecenal ; Zea mays L.
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Chemistry and Pharmacology
    Notes: Abstract We report the identification of the southwestern corn borer,Diatraea grandiosella Dyar (Lepidoptera: Pyralidae), female sex attractant pheromone as a mixture of (Z)-9-hexadecenal, (Z)-11-hexadecenal, and (Z)-13-octadecenal in the ratio 21.5∶70.6∶7.9. Initially, six 16- and 18-carbon aldehydes includingn-hexadecanal, (Z)-9-octadecenal, (Z)-11-octadecenal, and the three above were isolated from female gland rinses and evaluated as potential pheromone components by GLC-MS and laboratory bioassays. By laboratory flight chamber and field tests, the stated mixture of (Z)-9-hexadecenal, (Z)-11-hexadecenal, and (Z)-13-octadecenal was shown to be as effective as the female for male attraction. Electrophysiological studies confirmed the requirement for these three compounds, but not forn-hexadecanal, (Z)-9-octadecenal, and (Z)-11-octadecenal.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01041996
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    Paper (German National Licenses)
    Fulltext
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