Research Article

Related GMR Articles

4/20/2017
Animals; Body weight; Chickens; Genotype; Polymorphism, Restriction Fragment Length; Quantitative Trait, Heritable; Receptors, Somatomedin

Growth traits are important economic traits in broiler chicken production. AluI and Hin1I loci are two restriction sites, which are respectively located in exons 2 and 3 of the IGF-1R gene. These two loci are significantly related to the growth traits in Jinghai Yellow chickens. In this study, a correlation analysis was performed between these two loci and the growth traits of Bian chickens. ... more

P.F. Wu; D. Wang; C.F. Jin; X.Q. Zhang; H.Q. Wu; L. Zhang; F.X. Ding; K.Z. Xie; G.X. Zhang
3/22/2017
Animals; Estradiol; Female; Follicle Stimulating Hormone; Geese; Gonadotropin-releasing hormone; Gonadotropins; Hormones; Luteinizing Hormone; Ovary; Photoperiod; Prolactin; Reproduction; Vasoactive Intestinal Peptide

The poor egg-laying rate of geese hinders the development of the goose industry; therefore, the reproductive performance of geese is an important area of investigation. To evaluate the relationship between photoperiod, reproductive hormones, and reproductive activity during the egg-laying cycle in geese under natural conditions, we collected blood samples from Sichuan white geese and Xupu ... more

X.Z. Zhao; G.L. Gao; H.W. Wang; Q. Li; K.S. Zhang; H. Zhong; Q.G. Wang
2/8/2017
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
2/16/2017
Animals; Brazil; Conservation of Natural Resources; Female; Gene frequency; Genotype; male; Microsatellite Repeats; Sexual Behavior, Animal; Turtles

The aim of the present study was to investigate the reproductive behavior of the giant Amazon River turtle (Podocnemis expansa) in the Amazon. This was carried out by estimating the degree of polymorphism in five DNA microsatellites in a sample of 359 hatchlings from 12 nests in the Mamirauá Sustainable Development Reserve in the municipality of Tefé, state of Amazonas, Brazil. An analysis of ... more

C. Fantin; J. Morais; R. Botero-Arias; C. Araújo; C. Camillo; I.P. Farias
5/18/2017
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
9/21/2017
Animals; Chromosomes; Female; Genotype; Hybridization, Genetic; Karyotype; Liver; male; Microsatellite Repeats; Polymorphism, Genetic; Quantitative Trait, Heritable; Transcriptome; Turtles

Chinese soft-shelled turtle Pelodiscus sinensis has been an important aquaculture species in Southeast Asian countries. To breed a new variety of soft-shelled turtle with excellent properties and to evaluate the effect of hybridization of two turtle strains with a highly different trait phenotype, inheritance, microsatellite loci, and transcriptome analysis were studied in the hybrid turtles ... more

H.Q. Zhang; X.J. Xu; Z.Y. He; J.Z. Shao; X.H. Zhang; Q.H. Meng; F.Y. Huang
9/27/2017
Arecaceae; environment; Gene frequency; Genotype; Microsatellite Repeats; Phenotype; Polymorphism, Genetic; Selection, Genetic

This study uses ISSR molecular markers to characterize the demographic pattern, and spatial genetic structure (SGS) at different life stages of development (cohorts) in a natural population of Copernicia prunifera in the Rio Grande do Norte State, Brazil. All individuals were sampled and georeferenced in a 0.55-ha plot. The demographic analyses showed a clustered pattern in the first-distance ... more

L.G. Pinheiro; K.P.T. Chagas; A.S.M. Freire; M.C. Ferreira; C.G. Fajardo; F.A. Vieira
4/28/2017
Animals; Fragaria; Phenotype; Plant breeding; Plant Immunity; Selection, Genetic; Tetranychidae

Tetranychus urticae Koch (Acari: Tetranychidae) is considered the main pest of strawberry. Several factors can favor its development, among them the genotype susceptibility and cropping system. The aims of this study were to evaluate the agronomic performance of strawberry cultivars under different managements and to identify strawberry cultivars that meet tolerance to T. urticae and high ... more

A.F. Costa; P.E. Teodoro; L.L. Bhering; M.J. Fornazier; J.S. Andrade; D.S. Martins; J.S.Zanuncio Junior
3/22/2017
Animals; Base Sequence; Cattle; Female; Fertility; Genome; male; Polymorphism, Single Nucleotide; Pregnancy; Puberty; RNA; Selection, Genetic; Sequence Analysis, RNA; Sexual Maturation

Fertility traits, such as heifer pregnancy, are economically important in cattle production systems, and are therefore, used in genetic selection programs. The aim of this study was to identify single nucleotide polymorphisms (SNPs) using RNA-sequencing (RNA-Seq) data from ovary, uterus, endometrium, pituitary gland, hypothalamus, liver, longissimus dorsi muscle, and adipose tissue in 62 ... more

M.M. Dias; A. Cánovas; C. Mantilla-Rojas; D.G. Riley; P. Luna-Nevarez; S.J. Coleman; S.E. Speidel; R.M. Enns; A. Islas-Trejo; J.F. Medrano; S.S. Moore; M.R.S. Fortes; L.T. Nguyen; B. Venus; I.S.D.P. Diaz; F.R.P. Souza; L.F.S. Fonseca; F. Baldi; L.G. Albuquerque; M.G. Thomas; H.N. Oliveira
4/5/2017
Alleles; Brazil; Gene frequency; Genetic association studies; Haplotypes; Humans; Huntingtin Protein; Huntington Disease; Mutation; Trinucleotide repeat expansion

Huntington's disease (HD) is an autosomal dominant progressive neurodegenerative disorder caused by a dynamic mutation due to the expansion of CAG repeats in the HTT gene (4p16.3). The considered normal alleles have less than 27 CAG repeats. Intermediate alleles (IAs) show 27 to 35 CAG repeats and expanded alleles have more than 35 repeats. The IAs apparently have shown a normal phenotype. ... more

T.A. Apolinário; C.L.A. Paiva; L.A. Agostinho

Pages