Caracterização molecular e divergência genética de Bemisia tabaci (Genn. ) (Hemiptera: Aleyrodidae) em diferentes culturas e locais de cultivo / Molecular characterization and genetic divergence of Bemisia tabaci (Genn. ) (Hemiptera: Aleyrodidae) on different crops and growing areas
Neotrop. entomol
; 39(2): 221-226, mar.-abr. 2010. ilus, tab
Article
in Portuguese
| LILACS
| ID: lil-547684
Responsible library:
BR1.1
ABSTRACT
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 percent 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.
Full text:
Available
Collection:
International databases
Database:
LILACS
Main subject:
Genetic Variation
/
Crops, Agricultural
/
Hemiptera
Limits:
Animals
Language:
Portuguese
Journal:
Neotrop. entomol
Journal subject:
Biology
/
ZOOLOGIA
Year:
2010
Document type:
Article
Affiliation country:
Brazil
Institution/Affiliation country:
Instituto Agronômico/BR