27 documents found, page 1 of 3
Minimum number of measurements for evaluating Bertholletia excelsa
Baldoni, A.B.; Tonini, H.; Tardin, F.D.; Botelho, S.C.C.; Teodoro, P.E.Repeatability studies on fruit species are of great importance to identify the minimum number of measurements necessary to accurately select superior genotypes. This study aimed to identify the most efficient method to estimate the repeatability coefficient (r) and predict the minimum number of measurements needed for a more accurate evaluation of Brazil nut tree (Bertholletia excelsa) genotypes based on fruit ...
Assessment of genetic divergence among coffee genotypes by Ward-MLM procedure i...
Rodrigues, W.P.; Vieira, H.D.; Teodoro, P.E.; Partelli, F.L.; Barbosa, D.H.S.G.Mixed linear models have been used for the analysis of the genetic diversity and provided further accurate results in crops such as eucalyptus, castor, and sugarcane. However, to date, research that combined this analysis with Ward-MLM procedure has not been reported. Therefore, the aim of the present study was to identify divergent coffee genotypes by Ward-MLM procedure, in association with the mixed-decision ...
Clustering of soybean genotypes via Ward- MLM and ANNs associated with mixed mo...
Teodoro, P.E.; Torres, F.E.; Corrêa, A.M.não consta número de páginas; The objectives of this study were to use mixed models to confirm the presence of genetic variability in 16 soybean genotypes, to compare clusters generated by artificial neural networks (ANNs) with those created by the Ward modified location model (MLM) technique, and to indicate parental combinations that hold promise for obtaining superior segregating populations of soybean. A fi...
Diversity among elephant grass genotypes using Bayesian multi-trait model
Rossi, D.A.; Daher, R.F.; Barbé, T.C.; Lima, R.S.N.; Costa, A.F.; Ribeiro, L.P.; Teodoro, P.E.; Bhering, L.L.Elephant grass is a perennial tropical grass with great potential for energy generation from biomass. The objective of this study was to estimate the genetic diversity among elephant grass accessions based on morpho-agronomic and biomass quality traits and to identify promising genotypes for obtaining hybrids with high energetic biomass production capacity. The experiment was installed at experimental area of t...
Selection of common bean (Phaseolus vulgaris L.) genotypes using a genotype plu...
Corrêa, A.M.; Teodoro, P.E.; Gonçalves, M.C.; Santos, A.; Torres, F.E.não consta números de página; Recently, the genotype plus genotype x environment interaction (GGE) biplot methodology has been used to investigate genotype x environment interactions in several crop species, but has not been applied to the common bean (Phaseolus vulgaris L.) crop in Brazil. The aim of this study was to identify common bean genotypes that exhibit high grain yield and stability in the State of Ma...
Estimates of repeatability coefficients and the number of the optimum measure t...
Sanchéz, C.F.B.; Alves, R.S.; Garcia, A.D.P.; Teodoro, P.E.; Peixoto, L.A.; Silva, L.A.; Bhering, L.L.; Resende, M.D.V.The aim of this study was to evaluate repeated measures over the years to estimate repeatability coefficient and the number of the optimum measure to select superior genotypes in Annona muricata L. The fruit production was evaluated over 16 years in 71 genotypes without an experimental design. The estimation of variance components and the prediction of the permanent phenotypic value were performed using REML/BL...
Mixed models identify physic nut genotypes adapted to environments with differe...
Teodoro, P.E.; Laviola, B.G.; Amaral, J.F.T.; Rodrigues, W.N.; L.D. Martins, L.D.The aim of this study was to screen physic nut (Jatropha curcas) genotypes that differ in their phosphorous (P) use, using mixed models. The experiment was conducted in a greenhouse located in the experimental area of the Centro de Ciências Agrárias of the Universidade Federal do Espírito Santo, in Alegre, ES, Brazil. The experiment was arranged in a randomized block design, using a 10 x 3-factorial scheme, inc...
Selection of strawberry cultivars with tolerance to Tetranychus urticae (Acari:...
Costa, A.F.; Teodoro, P.E.; Bhering, L.L.; Fornazier, M.J.; Andrade, J.S.; Martins, D.S.; Zanuncio Junior, J.S.Tetranychus urticae Koch (Acari: Tetranychidae) is considered the main pest of strawberry. Several factors can favor its development, among them the genotype susceptibility and cropping system. The aims of this study were to evaluate the agronomic performance of strawberry cultivars under different managements and to identify strawberry cultivars that meet tolerance to T. urticae and high fruit yield. Thirteen ...
Multivariate diallel analysis allows multiple gains in segregating populations ...
Teodoro, P.E.; Rodrigues, E.V.; Peixoto, L.A.; Silva, L.A.; Laviola, B.G.; Bhering, L.L.Jatropha is research target worldwide aimed at large-scale oil production for biodiesel and bio-kerosene. Its production potential is among 1200 and 1500 kg/ha of oil after the 4th year. This study aimed to estimate combining ability of Jatropha genotypes by multivariate diallel analysis to select parents and crosses that allow gains in important agronomic traits. We performed crosses in diallel complete geneti...
Simultaneous selection for cowpea (Vigna unguiculata L.) genotypes with adaptab...
Torres, F.E.; Teodoro, P.E.; Rodrigues, E.V.; Santos, A.; Corrêa, A.M.; Ceccon, G.The aim of this study was to select erect cowpea (Vigna unguiculata L.) genotypes simultaneously for high adaptability, stability, and yield grain in Mato Grosso do Sul, Brazil using mixed models. We conducted six trials of different cowpea genotypes in 2005 and 2006 in Aquidauana, Chapadão do Sul, Dourados, and Primavera do Leste. The experimental design was randomized complete blocks with four replications an...