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G.A. Gravina

Publications of : G.A. Gravina
Plant Genetics   Research Article

Stability of annual biomass energy production of elephant grass (Pennisetum purpureum Schum.) genotypes in the Northern region of the Rio de Janeiro State, Brazil

The objectives of this study were to estimate the stability of dry biomass production of elephant grass genotypes under an annual harvest regime, in soil-climatic conditions of the Northern region of the Rio de Janeiro State, Brazil, and to compare methodologies for stability analyses of Yates and Cochran (YC), Plaisted and Peterson (PP), Annicchiarico (ANN), Lin an.. Read More»

Genet. Mol. Res. 16(3): gmr16039041

DOI: 10.4238/gmr16039041

Plant Genetics   Research Article

Early selection of sugarcane using path analysis

    R.P. Barbosa, F. Alcântara Neto, L.M. Gravina, G.A. Gravina, M.G.T. Portela and A.A.C. Bezerra

The aim of this study was to analyze sugarcane (Saccharum officinarum) biometric and technological data, obtained at different timepoints, using path analysis. The experiment was conducted in União, PI, Brazil, and evaluated 12 sugarcane genotypes (RB036066, RB9438, RB935744, RB021764, RB021754, RB021534, RB966229, RB977540, RB863129, and RB987935, and the va.. Read More»

Genet. Mol. Res. 16(1): gmr16019038

DOI: 10.4238/gmr16019038

Plant Genetics   Research Article

Biometric analysis of arabica coffee grown in low potassium nutrient solution under greenhouse conditions

    W.M. Moura, Y.J.B. Soares, A.T. Amaral Júnior, G.A. Gravina, L.D. Barili and H.D. Vieira

Genetic parameters and associations between morpho-agronomic traits and nutritional efficiencies of arabica coffee cultivars were estimated to identify promising traits to assist in the selection of coffee genotypes efficient in potassium use, under limiting conditions of this nutrient. The experiment was conducted in a greenhouse with 20 arabica coffee cultivars grown in nutrient solution with.. Read More»

Genet. Mol. Res. 15(3): gmr.15038753

DOI: 10.4238/gmr.15038753

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