Authors: J.A.E. Amorim, L.R. Mata, A.S. L�©do, V.C.R. Azevedo andA.V.C. Silva
In this study, we analyzed the genetic diversity and structure of remnants of mangaba populations in states of northeastern Brazil by applying 9 microsatellite markers previously developed to establish conservation strategies for germplasm and species preservation. Six to 20 individuals per population were analyzed, with a total of 94 individuals and 6 po.. Read More»
Authors: Vozzi PA, Marcondes CR, Bezerra LAF and Lobo RB
Parameters based on the probability of gene origin were used to describe genetic variability in three reproductive groups from the Breeding Program for Nellore Cattle (PMGRN). The three reproductive populations (cows in reproductive age, bulls from artificial insemination centers and young bulls in progeny test) generated medi.. Read More»
Authors: A.S. Oliveira, J.B. Miranda Filho and E.F. Reis
Three semiexotic populations (CRE-01, CRE-02, CRE-03) obtained by incorporation of exotic germplasm (lines from CIMMYT, Colombia; selected for resistance to corn stunt complex) were evaluated in two cycles of recurrent selection with half-sib families. In cycle-I, samples comprising 50, 70, and 50 half-sib families were evaluated at Jataí (GO) and .. Read More»
Authors: A.L. Campos, T.N. Marostega, N.S.S. Cabral, K.L. Ara�ºjo, M.E. Serafim, S. Seabra-J�ºnior, C.P. Sudr�©, R. Rodrigues and L.G. Neves
The genus Capsicum ranks as the second most exported vegetable in Brazil, which is also considered to be a center of diversity for this genus. The aim of this study was to rescue genetic variability in the genus Capsicum in the southwest region of Mato Grosso, and to characterize and estimate the genetic diversity of accessions based on morphoagronomic de.. Read More»
Authors: G.M. Yazbeck, R.L. Brand�£o, H.M. Cunha and A.P. Paglia
The cursor complex is a group within the Akodon genus of South American rodents, formed by Akodon cursor and A. montensis. Correct distinction between these two species is of great importance since they can harbor different Hantavirus strains. These species are only distinguishable by means of karyotypic or internal anatomic f.. Read More»
Authors: A.T.B. Lima, V.A.B. de Souza, R.L.F. Gomes and P.S.C. Lima
The arboreal species Spondias mombin L. (Anacardiaceae) is widely distributed in Brazil, where the fruits, known by the common name of cajá, are an important commercial commodity. We evaluated genetic variability among 32 cajá accessions of the Germplasm Collection of Embrapa Meio-Norte using RAPD technique. Reac.. Read More»
Authors: P.R.O. Silva, O.N.J. Jesus, S. Creste, A. Figueira, E.P. Amorim and C.F. Ferreira
Microsatellite markers have been widely used in the quantification of genetic variability and for genetic breeding in Musa spp. The objective of the present study was to evaluate the discriminatory power of microsatellite markers derived from ‘Calcutta 4’ and ‘Ouro’ genomic libraries, and to analyze the genetic variability among 30.. Read More»
Authors: C.B.M. Cerqueira-Silva, C.B. Cardoso-Silva, E.S.L. Santos, L.D.H.C.S. Concei�§�£o, A.S. Pereira, A.C. Oliveira and R.X. Corr�ªa
In spite of the importance of and the considerable variability observed in Passiflora (Passifloraceae), little is known about the genetic diversity of most of the species of this genus. We evaluated the genetic diversity by RAPD markers in 18 genotypes of Passiflora trintae. The 15 primers generated 112 markers, 84% of which w.. Read More»
Authors: L.M. Santos, R.A. Gama, A.E. Eiras and C.G. Fonseca
Anopheles darlingi is the most important malaria vector in Central and South America. After a dramatic reduction of malaria cases in the whole Brazilian territory, with the lowest abundance being attained by 1970, the disease resurged in the Amazon region, where it is now a great public health concern. Consequently, better kno.. Read More»
Authors: I. Gatti, M.A. Esp�³sito, P. Almir�³n, V.P. Cravero and E.L. Cointry
We characterized 13 accessions of dry peas of different origins from various growing regions in Argentina, based on three replications of 20 plants cultivated in 2009 and 2010 in a greenhouse, with the objective of selecting those with favorable characteristics for use in breeding programs. Significant differences were found f.. Read More»