Mechanism of resistance in sorghum variety AF-28 to Contarinia sorghicola (Diptera: Cecidomyiidae)

Counts of sorghum midge, C. sorghicola (Coquillett), adults visiting florets of the resistant sorghum, Sorghum bicolor (L.) Moench. (variety AF-28), and the susceptible variety Sart were not significantly different. More eggs (17-fold) were laid in "Sart" florets than in florets of AF-28....

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Veröffentlicht in:	Journal of economic entomology 1984-12, Vol.77 (6), p.1439-1440
Hauptverfasser:	Rossetto, C.J, Nagai, V, Overman, J
Format:	Artikel
Sprache:	eng
Schlagworte:	Agronomy. Soil science and plant productions Biological and medical sciences Cecidomyiidae CONTARINIA SORGHICOLA Control Fundamental and applied biological sciences. Psychology Generalities Genetics and breeding of economic plants OVIPOSITION Pest animals PEST RESISTANCE Phytopathology. Animal pests. Plant and forest protection Protozoa. Invertebrates SORGHUM Sorghum bicolor Varietal selection. Specialized plant breeding, plant breeding aims VARIETIES
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Zusammenfassung:	Counts of sorghum midge, C. sorghicola (Coquillett), adults visiting florets of the resistant sorghum, Sorghum bicolor (L.) Moench. (variety AF-28), and the susceptible variety Sart were not significantly different. More eggs (17-fold) were laid in "Sart" florets than in florets of AF-28. When eggs were artifically inserted into the florets of both varieties, there were no significant differences in numbers of adult midges that emerged, or in days for development from egg to adults between the two varieties. Thus, AF-28 showed resistance due to nonpreference for oviposition by the female sorghum midge.
ISSN:	0022-0493 1938-291X
DOI:	10.1093/jee/77.6.1439