Publications of : R.F. Daher
Animal Genetics   Research Article

Estimative of genetic diversity in germ-plasm of elephant grass using the Gower algorithm

This work aimed at estimating the genetic divergence among 85 accessions of elephant-grass using the Gower algorithm for the joint study of quantitative and qualitative traits. The experiment was conducted in the city of Campos dos Goytacazes, Rio de Janeiro state, Brazil, with of 85 elephant-grass genotypes. It was applied a randomized block experimental design with two replications. The exper.. Read More»

Genet. Mol. Res. 17(4):


Plant Genetics   Research Article

Biplot analysis of strawberry genotypes recommended for the State of Espírito Santo

    A.F. Costa, P.E. Teodoro, L.L. Bhering, N.R. Leal, F.D. Tardin and R.F. Daher

Most strawberry genotypes grown commercially in Brazil originate from breeding programs in the United States, and are therefore not adapted to the various soil and climatic conditions found in Brazil. Thus, quantifying the magnitude of genotype x environment (GE) interactions serves as a primary means for increasing average Brazilian strawberry yields, and helps provide specific recommendations.. Read More»

Genet. Mol. Res. 15(3): gmr.15038919

DOI: 10.4238/gmr.15038919

Plant Genetics   Research Article

Stability and adaptability of grain sorghum hybrids in the off-season

    J.E. Almeida Filho, F.D. Tardin, R.F. Daher, T.C. Barbé, C.M. Paula, M.J. Cardoso and V.P.C. Godinho

We analyzed productivity data obtained from experiments on grain sorghum conducted in 7 locations of its cultivation in Brazil. A total of 25 hybrids were analyzed, of which 22 were pre-commercial and 3 were cultivars. The Wricke and Purchase et al. methods were highly consistent in identifying individuals with low contributions to genotype x environment interaction.. Read More»

Genet. Mol. Res. 13(3): 2014.March.24.24

DOI: 10.4238/2014.March.24.24

Plant Genetics   Research Article

Identification of sorghum hybrids with high phenotypic stability using GGE biplot methodology

    P.E. Teodoro, J.E. Almeida Filho, R.F. Daher, C.B. Menezes, M.J. Cardoso, V.P.C. Godinho, F.E. Torres and F.D. Tardin

The aim of this study was to identify sorghum hybrids that have both high yield and phenotypic stability in Brazilian environments. Seven trials were conducted between February and March 2011. The experimental design was a randomized complete block with 25 treatments and three replicates. The treatments consisted of 20 simple pre-commercial hybrids and five witnesse.. Read More»

Genet. Mol. Res. 15(2): gmr.15027914

DOI: 10.4238/gmr.15027914

Plant Genetics   Research Article

RAPD and ISSR markers in the evaluation of genetic divergence among accessions of elephant grass

    R.S.N de Lima, R.F. Daher, L.S.A. Gonçalves, D.A. Rossi, A.T. do Amaral Júnior, M.G. Pereira and F.J.S. Lédo

Considering the expected genetic variability of elephant grass (Pennisetum purpureum), due to its cultivation in different continents, we characterized and estimated the genetic divergences between 46 accessions of elephant grass with different edaphoclimatic adaptations, using RAPD and ISSR markers. We evaluated, comparatively, the consistency of the information ac.. Read More»

Genet. Mol. Res. 10(3): vol10-3gmr1107

DOI: 10.4238/vol10-3gmr1107

Plant Genetics   Research Article

Use of elephant grass for energy production in Campos dos Goytacazes-RJ, Brazil

    R.F. Daher, L.B. Souza, G.A. Gravina, J.C. Machado, H.C.C. Ramos, V.Q.R. Silva, B.R.S. Menezes, L.S.A. Schneider, M.L.F. Oliveira and R.D. Gottardo

Elephant grass is a tropical forage plant widely distributed throughout Brazil. It was first exclusively used in the livestock sector as cattle feed. The grass is characterized by its high productivity and photosynthetic capacity and is considered as an alternative source of renewable energy. Here, we estimated the general combining ability of the parents and specific combining ability of the h.. Read More»

Genet. Mol. Res. 13(4): 2014

DOI: 10.4238/2014

Microbial Genetics   Research Article

Snap bean recommendation based on different methods of phenotypic stability

    C.D. Marinho G.A. Gravina L.C. Araújo S.N.C. Almeida A.T. Amaral Júnior R.F. Daher L.S.A. Gonçalves

In order to recommend the best strains of snap beans from the Universidade Estadual do Norte Fluminense (UENF) breeding program, different methods of analysis of phenotypic stability were adopted to evaluate the performance of 14 lines (F9 and F10) of indeterminate growth habit, which were compared with 3 controls, namely, 2 commercial varieties (Feltrin and Top Seed Blue Line) and 1 parent (UE.. Read More»

Genet. Mol. Res. 12(1): 2013.January.30.11

DOI: 10.4238/2013.January.30.11

Human Genetics   Research Article

Selection of progenies of snap beans using mixed models (REML/BLUP)

The purpose of this research was to select the development of superior genotypes of snap beans adapted to edaphoclimatic conditions of the North and Northwest of Rio de Janeiro State, Brazil, applying the mixed model methodology. The test was installed and carried out in the experimental area of the Instituto Federal Fluminense (IFF), located in the municipality of .. Read More»

Genet. Mol. Res. 17(2): gmr16039914

DOI: 10.4238/gmr16039914

Plant Genetics   Research Article

Indices estimated using REML/BLUP and introduction of a super-trait for the selection of progenies in popcorn

Selection indices commonly utilize economic weights, which become arbitrary genetic gains. In popcorn, this is even more evident due to the negative correlation between the main characteristics of economic importance - grain yield and popping expansion. As an option in the use of classical biometrics as a selection index, the optimal procedure restricted maximum lik.. Read More»

Genet. Mol. Res. 16(3): gmr16039769

DOI: 10.4238/gmr16039769

Plant Genetics   Research Article

Diversity among elephant grass genotypes using Bayesian multi-trait model

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 expe.. Read More»

Genet. Mol. Res. 16(3): gmr16039803

DOI: 10.4238/gmr16039803

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