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	Provedor de dados Genet. Mol. Biol. (2) Autor Lima,L.H.C. (2) Návia,D. (2) Oliveira,M.R.V. de (2) Campos,L. (1) Inglis,P.W. (1) Moretzsohn,M.C. (1) Mais... Palavra-chave AMOVA (1) Molecular markers (1) UPGMA (1) Whitefly (1) Tipo do documento Info:eu-repo/semantics/article (2) Ano 2002 (1) 2000 (1) País Brazil (2) Idioma Inglês (2)		Ordenar por:  Relevância Autor Título Ano Registros recuperados: 2 Primeira ... 1 ... Última Genetic diversity of Bemisia tabaci (Genn.) Populations in Brazil revealed by RAPD markers Genet. Mol. Biol. Lima,L.H.C.; Campos,L.; Moretzsohn,M.C.; Návia,D.; Oliveira,M.R.V. de. Bemisia tabaci (Genn.) was considered a secondary pest in Brazil until 1990, despite being an efficient geminivirus vector in beans and soybean. In 1991, a new biotype, known as B. tabaci B biotype (=B. argentifolii) was detected attacking weed plants and causing phytotoxic problems in Cucurbitaceae. Nowadays, B. tabaci is considered one of the most damaging whitefly pests in agricultural systems worldwide that transmits more than 60 different plant viruses. Little is known about the genetic variability of these populations in Brazil. Knowledge of the genetic variation within whitefly populations is necessary for their efficient control and management. The objectives of the present study were to use RAPD markers (1) to estimate the genetic diversity of B.... Tipo: Info:eu-repo/semantics/article Palavras-chave: Whitefly; Molecular markers; UPGMA; AMOVA. Ano: 2002 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-47572002000200016 Survey of Bemisia tabaci (Gennadius) (Hemiptera: Aleyrodidae) biotypes in Brazil using RAPD markers Genet. Mol. Biol. Lima,L.H.C.; Návia,D.; Inglis,P.W.; Oliveira,M.R.V. de. In 1991, the poinsettia strain, silverleaf whitefly or B biotype of Bemisia tabaci was detected in Brazil. This variant is a far more serious agricultural pest than the previously prevalent non-B (BR) biotype. The correct identification of B. tabaci is problematic since it is highly polymorphic with extreme plasticity in key morphological characters that vary according to the host. RAPD-PCR was used to survey the B biotype and other biotypes of B. tabaci in Brazil. Whiteflies were collected from cultivated plants and weeds from 57 different localities and on 27 distinct crops. RAPD analyses using two selected 10-mer primers reliably identified the BR biotype and the B biotype of B. tabaci and also differentiated other whitefly species. The presence of the... Tipo: Info:eu-repo/semantics/article Ano: 2000 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-47572000000400012 Registros recuperados: 2 Primeira ... 1 ... Última

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