
Authors: J.R. Ramos, M.P.C. Telles, J.A.F. Diniz-Filho, T.N. Soares, D.B. Melo and G. Oliveira
The random amplified polymorphic DNA (RAPD) technique is often criticized because it usually shows low levels of repeatability; thus it can generate spurious bands. These problems can be partially overcome by rigid laboratory protocols and by performing repeatability tests. However, because it is expensive and time-consuming to obtain genetic data twice f.. Read More»
Authors: P. Yang, C. Hua, F. Zhou, B.-J. Zhang, X-N. Cai, Q.-Z. Chen and R.-L. Wang
The high-affinity K+ transporter (HKT) family comprises a group of multifunctional cation transporters widely distributed in organisms ranging from Bacteria to Eukarya. In angiosperms, the HKT family consists primarily of nine types, whose evolutionary relationships are not fully understood. The available sequences from 31 plant species were used to perfo.. Read More»
Authors: M.W. Li, H.J. Yu, X.L. Yi, J. Li, F.Y. Dai and C.X. Hou
In the silkworm (Bombyx mori), tolerance to fluoride and scaleless wings are controlled by the dominant gene Dtf (dominant tolerance to fluoride) and recessive gene nlw (no Lepidoptera wings), respectively, and these genes have been mapped by using simple sequence repeat and sequence tag site markers. Marker-assisted evaluation and selection of silkworms .. Read More»
Authors: H. Chai, H.H. Huang, H.K. Jiang, Y. Liang and L.Y. Xia
Identifying biomarker genes and characterizing interaction pathways with high-dimensional and low-sample size microarray data is a major challenge in computational biology. In this field, the construction of protein-protein interaction (PPI) networks using disease-related selected genes has garnered much attention. Support vector machines (SVMs) are commo.. Read More»
Authors: S. Arlud, G.X. E and S.C. Zeng
Microsatellite DNA markers, which are assumed to drift, have been widely used to assess genetic diversity in all major domestic animal species. These markers provide insight into the arrival and dispersion history of a species, with regard to their content or management history. However, no direct evidence supports current standard microsatellite markers .. Read More»
Authors: D.R. Ayres, F.R.P. Souza, M.E.Z. Mercadante, L.F.S. Fonseca, H. Tonhati, J.N.S.G. Cyrillo, S.F.M. Bonilha and L.G. Albuquerque
We analyzed the polymorphisms TFAM HaeIII, TFAM MboI and FABP4 MspA1I in three Nellore lines selected for growth in order to evaluate how selection affects the frequencies of these polymorphisms and evaluate their association with growth and carcass traits in Zebu cattle. Birth, weaning and yearling weights, rump height, longi.. 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»
Authors: K.S.C. Galv�£o, H.C.C. Ramos, P.H.A.D. Santos, G.C. Entringer, J.C.F. Vettorazzi and M.G. Pereira
This study aimed to improve grain yield in the full-sib reciprocal recurrent selection program of maize from the North Fluminense State University. In the current phase of the program, the goal is to maintain, or even increase, the genetic variability within and among populations, in order to increase heterosis of the 13th cycle of reciprocal recurrent se.. Read More»
Authors: L.F. Brito, F.G. Silva, A.L.P. Melo, G.C. Caetano, R.A. Torres, M.T. Rodrigues and G.R.O. Menezes
Data from 1279 lactations of 783 Alpine and Saanen goats of the herd of our university in Minas Gerais, Brazil, were used to study environmental effects on and to estimate genetic parameters for milk production until 270 days of lactation (MP270) and for production and percentages of fat (PFAT and %FAT), protein (PPROT and %PR.. Read More»
Authors: Basualdo M, RodrÃ?Âguez EM, Bedascarrasbure E and De Jong D
We selected honey bee colonies (Apis mellifera L.) with a high tendency to collect sunflower pollen and estimated the heritability of this trait. The percentage of sunflower pollen collected by 74 colonies was evaluated. Five colonies that collected the highest percentages of sunflower pollen were selected. Nineteen colonies h.. Read More»