
Authors: B.P. Brasileiro, C.D. Marinho, P.M.A. Costa, E.F.A. Moreira, L.A. Peternelli and M.H.P. Barbosa
We evaluated the genetic diversity of 77 clones of sugarcane used in crosses made by the Brazilian interuniversity network for the development of the sugar/energy sector (RIDESA) breeding program. Characterization of the genotypes was carried out at the ratoon stage, based on eight morphological traits and seven agronomic trai.. Read More»
Authors: Y.N. Sun, Y. Qin, Z.H. Zhu and D.Q. Sun
Microsatellite markers for the half-fin anchovy Setipinna taty were developed from the enriched (CA)15 genomic library, and they were used for the population genetic studies of the half-fin anchovy from Chinese coastal areas. Samples were collected from five localities of the East China Sea and the Yellow S.. Read More»
Authors: F.P. Li, Y.S. Lee, S.W. Kwon, G. Li and Y.J. Park
This study analyzed 394 Korean rice landrace accessions, including 93 waxy varieties, for polymorphisms using 29 simple sequence repeat (SSR) markers. In total, 381 alleles served as raw data for estimating the genetic diversity (GD) and population structure. The number of alleles per locus ranged from 3 to 44 (average = 13.14.. Read More»
Authors: R.F. Missio, E.T. Caixeta, E.M. Zambolim, G.F. Pena, L. Zambolim, L.A.S. Dias and N.S. Sakiyama
Coffee is one of the main agrifood commodities traded worldwide. In 2009, coffee accounted for 6.1% of the value of Brazilian agricultural production, generating a revenue of US$6 billion. Despite the importance of coffee production in Brazil, it is supported by a narrow genetic base, with few accessions. Molecular differentiation and diversity of a coffee b.. Read More»
Authors: J.D. Souza Neto, T.C.B. Soares, L.B. Motta, P.D.S. Cabral and J.A. Silva
We characterized single primer amplification reaction (SPAR) molecular markers from 20 genotypes of Anthurium andraeanum Lind., including 3 from commercial varieties and 17 from 2 communities in the State of Espírito Santo, Brazil. Twenty-four SPAR, consisting of 7 random amplified polymorphic DNA and 17 inter-.. Read More»
Authors: L.C. Valentini, C.A. Mangolin, S.A.O. Collet and M.F.P.S. Machado
We used native polyacrylamide gel electrophoresis to identify polymorphism levels in a- and b-esterase loci from leaf tissues of Brazilian soybean cultivars for the analysis of population genetic diversity and structure, and to investigate relationships between conventional and genetically modified cultivars. The cultivars inc.. Read More»
Authors: R. Domingues, M.A. Machado, R.C. Forzza, T.D. Melo, S. Wohlres-Viana and L.F. Viccini
Pitcairnia albiflos is a Bromeliaceae species endemic to Brazil that has been included as data-deficient in the extinction risk list of Brazilian flora. We analyzed genetic variability in P. albiflos populations using RAPD markers to investigate population structure and reproductive mechanisms and also to evaluate the actual e.. Read More»
Authors: R.B. Miz, L.O. Tacuati�¡, F.W. Cidade, A.P. de Souza, F. Bered, L. Eggers and T.T. de Souza-Chies
Recent phylogenetic studies on Sisyrinchium strongly suggest that species classified in section Hydastylus and section Viperella belong to a single group of plants in recent adaptive radiation (Clade IV). These species neither present clear morphological differentiation among them nor show clear identification using DNA barcode markers. Thus, the main goa.. Read More»
Authors: J.E. Hern�¡ndez-Salmer�³n, C.M. Prieto-Barajas, E. Valencia-Cantero, G. Moreno-Hagelsieb and G. Santoyo
In the present study, we analyzed the frequency of hemolytic and antifungal activities in bacterial isolates from the rhizosphere of Medicago truncatula plants. Of the 2000 bacterial colonies, 96 showed β-hemolytic activities (frequency, 4.8 x 10-2). Hemolytic isolates were analyzed for their genetic diversity by.. Read More»
Authors: F.B. Souza-Sobreira, G.B. Souza, C.C.G. Rosado, F.D. Miranda, T.C.B. Soares, A.B.P.L. Gontijo
Bromeliads are greatly represented in the Atlantic Forest, although many species are threatened with extinction owing to habitat fragmentation and intense extraction for ornamental purposes. Therefore, it is necessary to conduct studies generating knowledge about genetic diversity and the distribution of this diversity among a.. Read More»