Selection
Estimates of repeatability coefficients and the number of the optimum measure to select superior genotypes in Annona muricata L.
Authors: C.F.B. Sanch?©z, R.S. Alves, A.d.P. Garcia, P.E. Teodoro, L.A. Peixoto, L.A. Silva, L.L. Bhering and M.D.V. Resende
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 compon.. Read More»
- Genet. Mol. Res. 16(3):
- gmr16039753
- DOI:
- 10.4238/gmr16039753
Genetic parameters and selection of soybean lines based on selection indexes
Authors: F.G. Teixeira, O.T. Hamawaki, A.P.O. Nogueira, R.L. Hamawaki, G.L. Jorge, C.L. Hamawaki, B.Q.V. Machado and A.J.O. Santana
Defining selection criteria is important to obtain promising genotypes in a breeding program. The objective of this study was to estimate genetic parameters for agronomic traits and to perform soybean line selection using selection indices. The experiment was conducted at an experimental area located at Capim Branco farm, belo.. Read More»
- Genet. Mol. Res. 16(3):
- gmr16039750
- DOI:
- 10.4238/gmr16039750
Genotypic gain with simultaneous selection of production, nutrition, and culinary traits in cowpea crosses and backcrosses using mixed models
Authors: D.G. Oliveira, M.M. Rocha, K.J. Damasceno-Silva, F.V. S?¡, L.R.L. Lima, and M.D.V. Resende
The aim of this study was to estimate the genotypic gain with simultaneous selection of production, nutrition, and culinary traits in cowpea crosses and backcrosses and to compare different selection indexes. Eleven cowpea populations were evaluated in a randomized complete block design with four replications. Fourteen traits .. Read More»
- Genet. Mol. Res. 16(3):
- gmr16039736
- DOI:
- 10.4238/gmr16039736
Evaluation of genotype x environment interactions in cotton using the method proposed by Eberhart and Russell and reaction norm models
Authors: R.S. Alves, P.E. Teodoro, F.C. Farias, F.J.C. Farias, L.P. Carvalho, J.I.S. Rodrigues, L.L. Bhering and M.D.V. Resende
Cotton produces one of the most important textile fibers of the world and has great relevance in the world economy. It is an economically important crop in Brazil, which is the world’s fifth largest producer. However, studies evaluating the genotype x environment (G x E) interactions in cotton are scarce in this country... Read More»
- Genet. Mol. Res. 16(3):
- gmr16039726
- DOI:
- 10.4238/gmr16039726
Artificial neural networks as auxiliary tools for the improvement of bean plant architecture
Authors: V.Q. Carneiro, G.N. Silva, C.D. Cruz, P.C.S Carneiro, M. Nascimento and J.E.S. Carneiro
lassification using a scale of visual notes is a strategy used to select erect bean plants in order to improve bean plant architectures. Use of morphological traits associated with the phenotypic expression of bean architecture in classification procedures may enhance selection. The objective of this study was to evaluate the .. Read More»
- Genet. Mol. Res. 16(2):
- gmr16029500
- DOI:
- 10.4238/gmr16029500
Phenotypic and genotypic correlations between soybean agronomic traits and path analysis
Authors: B.Q.V. Machado, A.P.O. Nogueira, O.T. Hamawaki, G.F. Rezende, G.L. Jorge, I.C. Silveira, L.A. Medeiros, R.L. Hamawaki and C.D.L. Hamawaki
The goals of this research were to evaluate the phenotypic and genotypic correlations between agronomic traits, to perform path analysis, having as main character grain yield, and to identify indirect selection criteria for grain yield. The experiment was carried out in an experimental area located at Capim Branco farm, which .. Read More»
- Genet. Mol. Res. 16(2):
- gmr16029696
- DOI:
- 10.4238/gmr16029696
Molecular detection of QTL controlling plant height components in a doubled haploid barley population
Authors: X.F. Ren, D.F. Sun, W.B. Dong, G.L. Sun and C.D. Li
Yield losses caused by lodging in barley can be partially controlled by reducing plant height. In order to understand dwarfing mechanisms and efficiently use new dwarf germplasms for a breeding program, it is important to identify QTL of plant height components. QTL analysis was performed for seven plant height component traits using a DH population of 12.. Read More»
- Genet. Mol. Res. 13(2):
- 2014.April.17.5
- DOI:
- 10.4238/2014.April.17.5
Marker-assisted selection in breeding silkworm strains with high silk production and resistance to the densonucleosis virus
Authors: C.X. Hou1, P.J. Sun1, X.J. Guo1,2, Y.P. Huang3 and M.W. Li1,2
In the silkworm (Bombyx mori), resistance to the Zhenjiang (China) strain of the densonucleosis virus (DNV-Z) is controlled by the recessive gene nsd-Z (non-susceptible to DNV-Z), which is linked to 7 simple-sequence repeat markers. Marker-assisted evaluation and selection of DNV-Z-resistant silkworms were used for predicting DNV-resistance in backcrossed.. Read More»
- Genet. Mol. Res. 12(4):
- 2013.October.7.3
- DOI:
- 10.4238/2013.October.7.3
A novel SCAR marker for detecting Psathyrostachys huashanica Keng chromatin introduced in wheat
Authors: W.L. Du, J. Wang, L.M. Wang, Y.H. Pang, J. Wu, J.X. Zhao, Q.H. Yang and X.H. Chen
In this study, we cloned and sequenced a 938-base pair polymorphic band, pHs27, in the tightly linked random amplified polymorphic DNA marker OPU10 and converted it into a sequence-characterized amplified region (SCAR) marker referred to as RHS141, which was specific for the Ns genome of Psathyrostachys huashanica. A GenBank basic local alignment search t.. Read More»
- Genet. Mol. Res. 12(4):
- 2013.October.18.16
- DOI:
- 10.4238/2013.October.18.16
â??Extended Fitnessâ? hypothesis: a link between individual and group selection
Authors: S.J. de Souza
What are the targets of natural selection remains a controversial issue in Biology. Here I propose the “Extended Fitness” hypothesis, in which extended phenotypes emerge as a link between individual and group selection. The basic premise of the extended fitness hypothesis is that extended phenotypes can be used by members of the same group sin.. Read More»
- Genet. Mol. Res. 12(4):
- 2013.October.17.5
- DOI:
- 10.4238/2013.October.17.5