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Abstract
Tetranychus ludeni damages the sweet potato. Pest development can vary between plant genotypes. The objective was to identify the preference of Tetranychus ludeni for Ipomoea batatas genotypes, from the germplasm bank at the Universidade Federal dos Vales do Jequitinhonha e Mucuri (UFVJM). Natural infestations of this mite were observed on 54 sweet potato genotypes in potted, in a greenhouse. Three mite-infested leafs of each genotype were collected and analyzed. The red mite showed different population density rate in genotypes. The BD 29 genotype was found to be highly susceptible, the BD 08, BD 57, BD i7 and Espanhola genotypes were moderately susceptible, and the others forty-nine genotypes showed low susceptibility to the mite.
Tetranychus ludeni danifica plantas de batata-doce. O desenvolvimento de pragas pode variar entre genótipos de plantas. O objetivo foi identificar a preferencia de T. ludeni para genótipos de Ipomoea batatas do banco de germoplasma da Universidade Federal dos Vales do Jequitinhonha e Mucuri (UFVJM). Infestações naturais deste acaro foram observadas em 54 genótipos de batata doce plantados em vasos e mantidos em estufa. Tres folhas infestadas por ácaros, de cada genótipo, foram coletadas e analisadas. Tetranychus ludeni mostrou diferentes taxas de crescimento populacional entres os genótipos. O genótipo BD 29 foi altamente suscetível, os BD 08, BD 57, BD 17 e Espanhola foram moderadamente suscetíveis e os outros 49 genótipos mostraram baixa suscetibilidade ao ácaro.
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Details
1 Departamento de Fitotecnia, Universidade Federal de Viçosa - UFV, Av. Peter Henry Rolfs, s/n, Campus Universitario, CEP 36570-900, Viçosa, MG, Brasil
2 Departamento de Agronomia, Universidade Federal do Vale do Jequitinhonha e Mucuri - UFVJM, Campus JK, Rodovia MGT 367, Km 583, 5000, Alto da Jacuba, CEP 39i00-000, Diamantina, MG, Brasil
3 Departamento de Agricultura, Universidade Federal de Lavras - UFLA, Campus Universitario, Caixa Postal 3037, CEP 37200-000, Lavras, MG, Brasil
4 Departamento de Entomologia/ Instituto de Biotecnología Aplicada å Agropecuaria (BIOAGRO), Universidade Federal de Viçosa - UFV, Av. Peter Henry Rolfs, s/n, Campus Universitario, CEP 36570-900, Viçosa, MG, Brasil