Research Article

Related GMR Articles

05/18/2017
Ecosystem; Genotype; Phenotype; Plant breeding; Polymorphism, Genetic; Quantitative Trait, Heritable; Selection, Genetic; Vigna

Estimating genetic parameters in plant breeding allows us to know the population potential for selecting and designing strategies that can maximize the achievement of superior genotypes. The objective of this study was to evaluate the genetic potential of a population of 20 cowpea genotypes by estimating genetic parameters and path analysis among the traits to guide the selection strategies. ... more

K.V. Lopes; P.E. Teodoro; F.A. Silva; M.T. Silva; R.L. Fernandes; T.C. Rodrigues; T.C. Faria; A.M. Corrêa
05/25/2017
Genetic variation; Hybridization, Genetic; Plant breeding; Quantitative Trait, Heritable; Silage; Zea mays

We assessed the impact of genetic divergence and the ability to combine corn hybrids used for the production of silage on the agronomic and bromatological traits of silage quality. We evaluated 18 corn hybrids used as genitors in a circulant diallel scheme in which each genitor hybrid participated in 9 hybrid combinations, and evaluated 100 treatments [18 genitor hybrids, 81 diallelic hybrids ... more

E. Gralak; M.V. Faria; A.S.T. Figueiredo; D.A. Rizzardi; M. Neumann; M.C. Mendes; C.A. Scapim; S. Galbeiro
07/06/2017
Fusarium; Gene Expression Regulation, Plant; Genetic markers; Genetic variation; Heat-shock proteins; Inbreeding; Lipoxygenase; maternal inheritance; Plant breeding; Plant Immunity; Plant Proteins; Selection, Genetic; Zea mays

In recent years, there has been a large incidence of fungi causing "ear rot" in maize in Brazil, the main fungus being Fusarium verticillioides. The most efficient and competitive alternative for control of this disease consists of using maize hybrids resistant to this pathogen. Thus, the aims of this study were to analyze the genetic variability of maize inbred lines in regard to resistance ... more

G.S. Pereira; R.G.V. Pinho; E.V.R.V. Pinho; L.P.M. Pires; L.A.Y.Bernar Junior; J.L.A. Pereira; M.P. Melo
09/27/2017
Edible Grain; environment; Genetic variation; Phosphorus; Plant breeding; Selective breeding; Soil; Stress, Physiological; Zea mays

The expansion of agriculture, coupled with the need for sustainable cropping, is one of the greatest challenges of the scientific community working on the generation of new cultivars adapted to abiotic stress conditions. The aim of this study was to evaluate the variability of popcorn lines as to responsiveness and efficiency in phosphorus use, as a first step towards the implementation of a ... more

I.F.S. Gerhardt; A.T.Amaral Júnior; L.J.M. Guimarães; I.A. Schwantes; A. Santos; S.H. Kamphorst; V.J. Lima; F.M. Poblete; G.O. Myers
09/27/2017
Gene-Environment Interaction; Genetic variation; genomic instability; Hypocotyl; Models, Genetic; Plant breeding; Plant Leaves; Quantitative Trait, Heritable; Selective breeding; Soybeans

In order to obtain the certificate of cultivar protection, it is necessary to prove its distinctiveness, homogeneity, and stability. Currently, there are 37 descriptors for differentiating soybeans cultivars. However, they are still not enough and, as a result, it is necessary to create, identify, and evaluate new descriptors. This study was aimed at evaluating the genotypic and environment ... more

M.V.A. Chaves; N.S. Silva; R.H.O. Silva; G.L. Jorge; I.C. Silveira; L.A. Medeiros; R.L. Hamawaki; O.T. Hamawaki; A.P.O. Nogueira; C.D.L. Hamawaki
02/08/2017
Alleles; Brazil; Genetic variation; Genotype; Phenotype; Quantitative Trait, Heritable; Saccharum; Selection, Genetic; Time Factors

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 varieties RB92579 and RB867515 as ... more

R.P. Barbosa; A. Neto; L.M. Gravina; G.A. Gravina; M.G.T. Portela; A.A.C. Bezerra
02/08/2017
cluster analysis; Disease resistance; Genetic variation; Genotype; Gossypium; Phenotype; Plant Diseases; Quantitative Trait, Heritable

In Pakistan, cotton crop has been under enormous threat of cotton leaf curl disease (CLCuD) over the last four decades. In order to estimate genetic diversity in cotton germplasm CLCuD resistance, we assessed 100 cotton genotypes for their CLCuD resistance/tolerance and other related agronomical traits. Various statistical analytical tools, including correlation analysis, cluster analysis, and ... more

M. Javed; S.B. Hussain; M. Baber
02/08/2017
Breeding; Crosses, Genetic; Disease resistance; Genetic variation; Genotype; Gossypium; Phenotype; Quantitative Trait, Heritable

Studying genetic diversity among a group of genotypes is important in genetic breeding because identifying hybrid combinations of greater heterotic effect also increases the chance of obtaining plants with favorable allele combinations in an intra-population selection program. The objective of this study was to compare different types of long and extra-long staple cotton and their genetic ... more

L.P. de Carvalho; F.J.C. Farias; J.I.S. Rodrigues; N.D. Suassuna; P.E. Teodoro
03/16/2017
Animals; Base Sequence; Conserved sequence; Disease resistance; Evolution, Molecular; Genetic markers; Genetic variation; Genotype; Microsatellite Repeats; Phylogeny; Plant Diseases; Plant Proteins; Psidium; Tylenchoidea

Guava (Psidium guajava L.) crop is severely affected by the nematode Meloidogyne enterolobii. Native Psidium species have been reported as sources of resistance against this nematode. Knowledge on the molecular relationship between Psidium species based on plant resistance gene analogs (RGA) can be useful in the genetic breeding of guava for resistance to M. enterolobii. In this study, RGA ... more

L.R. Noia; A.C. Tuler; A. Ferreira; M.F.S. Ferreira
03/16/2017
Animals; Disease resistance; Genotype; Host-Parasite Interactions; Multivariate analysis; Phaseolus; Plant Diseases; Plant Roots; Random Allocation; seeds; Tylenchoidea

The availability of common bean cultivars tolerant to Meloidogyne javanica is limited in Brazil. Thus, the present study aimed to evaluate the reactions of 33 common bean genotypes (23 landrace, 8 commercial, 1 susceptible standard and 1 resistant standard) to M. javanica, employing multivariate statistics to discriminate the reaction of the genotypes. The experiment was conducted in a ... more

L.N.S. Santos; P.D.S. Cabral; G.A.R. Neves; F.R. Alves; M.B. Teixeira; F.N. Cunha; N.F. Silva

Pages