Zea Mays
Inference of genetic diversity in popcorn S3 progenies
Authors: G.F. Pena, A.T. do Amaral Jr, R.M. Ribeiro, H.C.C. Ramos,M.S.B. Boechat, J.S. Santos, G.S. Mafra, S.H. Kamphorst, V.J. de Lima, M. Vivas and G.A. de Souza Filho
Molecular markers are a useful tool for identification of complementary heterotic groups in breeding programs aimed at the production of superior hybrids, particularly for crops such as popcorn in which heterotic groups are not well-defined. The objective of the present study was to analyze the genetic diversity of 47 genotype.. Read More»
- Genet. Mol. Res. 15(2):
- gmr.15028456
- DOI:
- 10.4238/gmr.15028456
Verification and characterization of chromosome duplication in haploid maize
Authors: E.G. de Oliveira Couto, E.V. Resende Von Pinho, R.G. Von Pinho, A.D. Veiga, M.R. de Carvalho, F. de Oliveira Bustamante and M.S. Nascimento
Doubled haploid technology has been used by various private companies. However, information regarding chromosome duplication methodologies, particularly those concerning techniques used to identify duplication in cells, is limited. Thus, we analyzed and characterized artificially doubled haploids using microsatellites molecular markers, pollen viability, .. Read More»
- Genet. Mol. Res. 14(2):
- 2015.June.26.9
- DOI:
- 10.4238/2015.June.26.9
Evaluation of the genotoxic activity of dicamba and atrazine herbicides in several Mexican and South American varieties of sweetcorn (Zea mays L.)
Authors: M.S. Reynoso, C.M. Alvarez, L. De la Cruz, M.D. Escoto and J.J.G. S�¡nchez
Corn is a major crop and various herbicides are used to maximize its production, which include a dicamba-atrazine mixture. This has great advantages, but can also induce DNA damage. Genotoxic activity was assessed by comet assay following application of two concentrations of dicamba-atrazine: 1000-2000 and 2000-4000 ppm. Apical meristem leaf nuclei from 1.. Read More»
- Genet. Mol. Res. 14(4):
- 2015.December.11.5
- DOI:
- 10.4238/2015.December.11.5
Effect of temperature on endogenous hormone levels and opposite phyllotaxy in maize leaf primordial
Authors: H. Ye, G.M. Han, Q. Ma, Y.Q. Tan, H.Y. Jiang, S.W. Zhu and B.J. Cheng
Newly identified maize (Zea mays) mutants with opposite leaf phyllotaxy are important in the study of the maize crop. Previous studies have revealed the developmental mechanism of opposite phyllotaxy on the physiological, cellular, and molecular levels. However, there have been few reports regarding the effects of changes in endogenous hormone levels in m.. Read More»
- Genet. Mol. Res. 14(4):
- 2015.December.16.2
- DOI:
- 10.4238/2015.December.16.2
Experimental optimization of the number of blocks by means of algorithms parameterized by confidence interval in popcorn breeding
Authors: T.O.M. Paula, C.D. Marinho, A.T. Amaral J�ºnior, L.A. Peternelli and L.S.A. Gon�§alves
The objective of this study was to determine the optimal number of repetitions to be used in competition trials of popcorn traits related to production and quality, including grain yield and expansion capacity. The experiments were conducted in 3 environments representative of the north and northwest regions of the State of Rio de Janeiro with 10 Brazilia.. Read More»
- Genet. Mol. Res. 12(2):
- 2013.June.27.2
- DOI:
- 10.4238/2013.June.27.2
Genetic diversity of popcorn genotypes using molecular analysis
Authors: F.S. Resh, C.A. Scapim, C.A. Mangolin, M.F.P.S. Machado, A.T. do Amaral Jr., H.C.C. Ramos and M. Vivas
In this study, we analyzed dominant molecular markers to estimate the genetic divergence of 26 popcorn genotypes and evaluate whether using various dissimilarity coefficients with these dominant markers influences the results of cluster analysis. Fifteen random amplification of polymorphic DNA primers produced 157 amplified fragments, of which 65 were mon.. Read More»
- Genet. Mol. Res. 14(3):
- 2015.August.19.16
- DOI:
- 10.4238/2015.August.19.16
Genetic analysis of maize kernel thickness by quantitative trait locus identification
Authors: S.S. Wen, G.Q. Wen, C.M. Liao and X.H. Liu
Kernel thickness is one of the most important traits in kernel structure, and is related to yield. To ascertain its genetic information more clearly, an immortal recombinant inbred line segregation population was used to map the quantitative trait loci (QTLs) for kernel thickness. As a result, two QTLs were identified on chromosome 9; both of them had neg.. Read More»
- Genet. Mol. Res. 14(3):
- 2015.August.19.19
- DOI:
- 10.4238/2015.August.19.19