Anais da Sociedade Entomológica do Brasil (1998) 27, 299-302

I. Cruz, J.D. Vendramim and A.C. Oliveira (1998)
Determinação do Período de Avaliação de Não-Preferência de Sorgo ao Pulgão-Verde, Schizaphis graminum (Rond.) (Homoptera: Aphididae)
[Determination of the evaluation period of non-preference of sorghum to the greenbug, Schizaphis graminum (Rond.) (Homoptera: Aphidoidea)]
Anais da Sociedade Entomológica do Brasil 27 (2), 299-302
Abstract: To determine the evaluation period of preference of the greenbug, Schizaphis graminum (Rond.) to sorghum (Sorghum bicolor) genotypes, a study was conducted at the Embrapa/National Corn and Sorghum Research Center, Sete Lagoas, MG, using different sources of resistance. Cultivars were randomized within pots and 11-d after planting five apterous adult greenbugs/ plant were released in the center of the pot. Evaluations based on the number of insects in each genotype, after 24, 48, 72 and 96 hours of the insects release indicated that 72 hours after infestation was the ideal period to evaluate the non-preference of S. graminum to sorghum.
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(original language: Portuguese)
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Database assignments for author(s): Ivan Cruz, José Djair Vendramim

Research topic(s) for pests/diseases/weeds:
resistance/tolerance/defence of host

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Pest and/or beneficial records:

Beneficial	Pest/Disease/Weed	Crop/Product	Country	Quarant.
	Schizaphis graminum	Sorghum (crop)	Brazil (south)