Publications of : L.A. Silva
Microbial Genetics   Research Article

High concentrations of sacharose lead to metabolic changes that favor the formation of co-products in ethanolic fermentation by Zymomonas mobilis

Z. mobilis has attracted great biotechnology interest in recent decades due to its unique metabolism and the ability to produce bioethanol from simple sugars in an effectively and quickly way. Z. mobilis also produce other bioactive products as fructose, gluconic acid, sorbitol, levan, fructo-oligosaccharides. This study aimed to identify proteins differentially expressed by Z. mobilis ZAG-12 u.. Read More»

Genet. Mol. Res. 17(4): http://dx.doi.org/gmr16039929

DOI: http://dx.doi.org/10.4238/gmr16039929

Plant Genetics   Research Article

Path analysis and canonical correlations for indirect selection of Jatropha genotypes with higher oil yield

    L.A. Silva, L.A. Peixoto, P.E. Teodoro, E.V. Rodrigues, B.G. Laviola, L.L. Bhering

Jatropha is a species with great potential for biodiesel production, and the knowledge on how the main agronomic traits are correlated will contribute to its improvement. Therefore, the objectives of this study were to estimate the genetic parameters of the traits: plant height at 12 and 40 months, canopy projection on the row at 12 and 40 months, canopy projection .. Read More»

Genet. Mol. Res. 16(1): gmr16019562

DOI: 10.4238/gmr16019562

Plant Genetics   Research Article

Multivariate diallel analysis allows multiple gains in segregating populations for agronomic traits in Jatropha.

    P.E. Teodoro, E.V. Rodrigues, L.A. Peixoto, L.A. Silva, B.G. Laviola, L.L. Bhering

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. W.. Read More»

Genet. Mol. Res. 16(1): gmr16019545

DOI: 10.4238/gmr16019545

Plant Genetics   Research Article

Selection index using the graphical area applied to sugarcane breeding

    L.A. Silva, R.T. Resende, R.A.D.C. Ferreira, G.N. Silv, V. Kist, M.H.P. Barbosa, M. Nascimento and L.L. Bhering

This study aimed to develop a multivariate selection index based on the graphical area of a polygon formed by standardized values, also known as radar chart. This methodology may be used to assist selection of superior genotypes in sugarcane breeding programs. Seven technological traits in 37 sugarcane genotypes were evaluated. An area index (AI) was constructed and the resulting polygon areas .. Read More»

Genet. Mol. Res. 15(3): gmr.15038711

DOI: 10.4238/gmr.15038711

Plant Genetics   Research Article

Selection of sorghum hybrids grown under aluminum saturation

    C.B. Menezes, G.A. Carvalho Junior, L.A. Silva, K.C. Bernardino, J.V. Magalhães, C.T. Guimarães, L.J.M. Guimarães and R.E. Schaffert

The purpose of this study was to evaluate 165 hybrids derived from lines previously selected for aluminum (Al) tolerance. Nine check cultivars were used, eight commercial hybrids and one experimental hybrid. Hybrids were evaluated at three levels of Al saturation (0, 20 and 40% on average). The differences between the environments were significant. Environment with .. Read More»

Genet. Mol. Res. 13(3): 2014.August.7.12

DOI: 10.4238/2014.August.7.12

Plant Genetics   Research Article

Minimum number of measurements for evaluating soursop (Annona muricata L.) yield

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 soursop (Annona mu.. Read More»

Genet. Mol. Res. 16(2): gmr16029594

DOI: 10.4238/gmr16029594

Plant Genetics   Research Article

Selecting sugarcane genotypes by the selection index reveals high gain for technological quality traits

    L.A. Silva, P.E. Teodoro, L.A. Peixoto, C. Assis, K. Gasparini, M.H.P. Barbosa and L.L. Bhering

Sugarcane (Saccharum sp) is one of the most promising crops and researchers have sought for renewable alternative energy sources to reduce CO2 emission. The study of strategies, which allow breeders in the selection of superior genotypes for many traits simultaneously, is important. Therefore, the objectives of this study were: i) to apply path analysis to better un.. Read More»

Genet. Mol. Res. 16(2): gmr16029678

DOI: 10.4238/gmr16029678

Plant Genetics   Research Article

Estimates of repeatability coefficients and the number of the optimum measure to select superior genotypes in Annona muricata L.

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.. Read More»

Genet. Mol. Res. 16(3): gmr16039753

DOI: 10.4238/gmr16039753

Plant Genetics   Research Article

Selection of Jatropha full-sib families based on genotypic adaptability and stability via mixed models

The objectives of this study were to estimate the genetic parameters for Jatropha full-sib families and to select superior genotypes based on grain yield, adaptability, and stability simultaneously to be used for cloning and crossings. Grain yield was evaluated in thirteen full-sib families in a randomized block design for 5 years. The harmonic mean of the relative .. Read More»

Genet. Mol. Res. 16(3): gmr16039722

DOI: 10.4238/gmr16039722

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