Research Article

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The aim of this study was to select morphoagronomic descriptors to characterize cassava accessions representative of Eastern Brazilian Amazonia. It was characterized 262 accessions using 21 qualitative descriptors. The multiple-correspondence analysis (MCA) technique was applied using the criteria: contribution of the descriptor in the last factorial axis of analysis in successive cycles (SMCA ... more

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Using commercial cultivars to compose crossing blocks in cotton is a promising strategy, because these materials have desirable agronomic and technological characteristics. The objective of this study was to evaluate the genetic diversity among 16 cotton cultivars cultivated in two environments in the State of Mato Grosso, the largest national producer, using agronomical and technological ... more

I.G. Santos; P.E. Teodoro; F.C. Farias; F.J.C. Farias; L.P. Carvalho; J.I.S. Rodrigues; C.D. Cruz
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Alleles; Biodiversity; Brazil; Bromeliaceae; Forests; Genetic Loci; Inbreeding; Polymorphism, Genetic

The Bromeliaceae family includes a range of species used for many purposes, including ornamental use and use as food, medicine, feed, and fiber. The state of Espírito Santo, Brazil is a center of diversity for this family in the Atlantic Forest. We evaluated the genetic diversity of five populations of the Bromeliaceae family, including specimens of the genera Aechmea, Billbergia (subfamily ... more

Y. Sheu; A.S. Cunha-Machado; A.B.P.L. Gontijo; F.C. Favoreto; T.B.C. Soares; F.D. Miranda
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Lasiodiplodia theobromae is a plant pathogen with a worldwide distribution, with low host specificity, causing stem cankers, dieback diseases, and fruit rot in several species of plants. In coconut, this pathogen is reported as the etiological agent of "coconut leaf blight" (CLB) disease, causing several losses in fruit production. The CLB is an important disease for this crop in Brazil. In ... more

P.H.D. Santos; B.M. Carvalho; K.P. Aguiar; F.A.S. Aredes; T.P.S. Poltronieri; J.M.S. Vivas; M. Dias; G.A. Bezerra; D.B. Pinho; M.G. Pereira; S.F. Silveira
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Sexually transmitted infections are an important cause of morbidity among sexually active women worldwide, and have been implicated as cofactors in the pathogenesis of cervical cancer. We investigated the prevalence of human papillomavirus (HPV), Chlamydia trachomatis (CT), and Trichomonas vaginalis (TV), and accessed the diversity of HPV in women with normal and abnormal cytology in Manaus, ... more

E. Costa-Lira; A.H.V.L. Jacinto; L.M. Silva; P.F.R. Napoleão; R.A.A. Barbosa-Filho; G.J.S. Cruz; S. Astolfi-Filho; C.M. Borborema-Santos
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Brazil; Forests; Gene flow; Genotype; Lecythidaceae; Linkage disequilibrium; Microsatellite Repeats; seeds

Cariniana estrellensis is one of the largest trees found in Brazilian tropical forests. The species is typical of advanced stages of succession, characteristic of climax forests, and essential in genetic conservation and environmental restoration plans. In this study, we assessed Mendelian inheritance, genetic linkage, and genotypic disequilibrium in nine microsatellite loci for a C. ... more

T.Y.K. Kubota; A.M. Silva; J. Cambuim; A.A. Silva; S. Pupin; M.S. Silva; M.A. Moraes; M.L.T. Moraes; A.M. Sebbenn
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The Amazon region has the largest hydrographic basin on the planet and 
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Hepatitis B virus (HBV) infection is a serious public health problem worldwide. The progression of the disease depends on several host and viral factors and may result in fulminant hepatitis (very rare), acute hepatitis with spontaneous clearance, and chronic hepatitis B infection. Previous studies demonstrated that variations in the human leukocyte antigen (HLA) class II (HLA-DPB1 and HLA- ... more

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The genetic diversity of epiphytic yeasts from grape carposphere is susceptible to environmental variations that determine the predominant carposphere microbiota. Understanding the diversity of yeasts that inhabit grape carposphere in different environments and their pectinolytic activity is a way to understand the biotechnological potential that surrounds us and help improve winemaking. ... more

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