Data/hora: 13/06/2024 02:47:57

Provedor de dados: | 82
País: | Brazil
Título: | Caracterização molecular e divergência genética de Bemisia tabaci (Genn.) (Hemiptera: Aleyrodidae) em diferentes culturas e locais de cultivo
Autores: | Fontes,Fernanda Von H M; Colombo,Carlos A; Lourenção,André L.
Data: | 2010-04-01
Ano: | 2010
Palavras-chave: | Silverleaf whitefly; RAPD-PCR; Biotype; Genetic diversity; Squash silvering.
Resumo: | Knowledge on the genetic variation of populations of Bemisia tabaci (Genn.) can improve the understanding of genetic diversity found in their biotypes and, consequently, offer guidelines for its management. In this study, the molecular characterization was performed and genetic diversity data were obtained for this insect from three regions of Brazil on different crops [cotton and soybean (Mato Grosso - MT); cabbage (Distrito Federal - DF); soybean and potato (São Paulo - SP)], using RAPD markers. RAPD analysis indicated 80.6% polymorphic loci and the average genetic similarity obtained by the Jaccard coefficient was 0.67. The whitefly populations collected on potato (SP) and soybean (MT) had higher genetic diversity values (0.75 and 0.72, respectively). Shannon's index (Ho) showed higher values for potato and soybean (SP e MT), and a smaller value for cabbage (DF). A high genetic divergence within and among the collected populations occurred, structured according to the regions of collection. Moreover, the great genetic similarity observed between potato (SP) and soybean (SP) populations suggested that both belong to the same biotype B and reinforces the polyphagous behavior of the species.
Tipo: | Info:eu-repo/semantics/article
Idioma: | Português
Identificador: | http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1519-566X2010000200012
Editor: | Sociedade Entomológica do Brasil
Relação: | 10.1590/S1519-566X2010000200012
Formato: | text/html
Fonte: | Neotropical Entomology  v.39 n.2 2010
Fonte: | info:eu-repo/semantics/openAccess