01487nas a2200181   4500008004100000020001400041245015300055210006900208260000900277300001000286490000600296520086700302653002301169100002301192700002101215700001901236856005001255       2007                        eng d  a1676-568000aGenetic diversity of Brazilian natural populations of Anthonomus grandis Boheman (Coleoptera: Curculionidae), the major cotton pest in the New World0 aGenetic diversity of Brazilian natural populations of Anthonomus  c2007  a23-320 v63 aTwenty-five RAPD loci and 6 isozyme loci were studied to characterize the genetic variability of natural populations of Anthonomus grandis from two agroecosystems of Brazil. The random-amplified polymorphic DNA data disclosed a polymorphism that varied from 52 to 84% and a heterozygosity of 0.189 to 0.347. The index of genetic differentiation (GST) among the six populations was 0.258. The analysis of isozymes showed a polymorphism and a heterozygosity ranging from 25 to 100% and 0.174 to 0.277, respectively. The genetic differentiation (FST) among the populations obtained by isozyme data was 0.544. It was possible to observe rare alleles in the populations from the Northeast region. The markers examined allowed us to distinguish populations from large-scale, intensive farming region (cotton belts) versus populations from areas of small-scale farming.10aAnthonomus grandis1 aMartins, W., F. S.1 aAyres, C., F. J.1 aLucena, W., A.  uhttp://www.funpecrp.com.br/GMR/all_issues.htm