Research Article

Related GMR Articles

09/21/2017
Flowers; Genes, Dominant; Genetic variation; Phaseolus; Plant breeding; Quantitative trait loci; Quantitative Trait, Heritable; seeds

This article aimed to study the genetic control of some flowers and pod set of common bean and to verify if its estimate varies with environmental conditions and gene pool. A complete diallel was used among six lines, but no reciprocal ones. The treatments were evaluated in three harvests/generations - F, F, and F - in 2015/2016, in a randomized complete block design with four replications. ... more

E.S. Martins; R.A.Pinto Júnior; A.F.B. Abreu; M.A.P. Ramalho
09/27/2017
Analysis of variance; Bertholletia; Dimensional Measurement Accuracy; Fruit; Genetic variation; Genotype; Phenotype; Plant breeding; Principal component analysis; Quantitative Trait, Heritable

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 Brazil nut tree (Bertholletia excelsa) ... more

A.B. Baldoni; H. Tonini; F.D. Tardin; S.C.C. Botelho; P.E. Teodoro
2017 Sep 27
Gene-Environment Interaction; Genetic variation; genomic instability; Glycine max; Hypocotyl; Models, Genetic; Plant breeding; Plant Leaves; Quantitative Trait, Heritable; Selective breeding

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
09/27/2017
Chimera; Chromosome banding; DNA fingerprinting; Genes, Dominant; Genetic variation; Genotype; Gossypium; Heterozygote; Hybridization, Genetic; Microsatellite Repeats; Plant breeding

Molecular identification of hybrid purity is difficult in regional trials of cotton varieties and hybrid trials. In particular, the molecular detection of hybrid purity has not yet been reported in the case of unknown parentage. In this study, we screened 5000 pairs of primers and chose 17 pairs of core simple sequence repeat (SSR) primers to determine the F1 purity of Han6402. The results ... more

X.Q. Fu; F.X. Yang; X.K. Lu; X.G. Wang; B.X. Yang; F.J. Liu; Y. Liu; J. Peng
12/19/2016
Plant breeding; Quantitative trait loci; Quantitative Trait, Heritable; Selection, Genetic; Zea mays

A challenge faced by popcorn breeding programs is the existence of a negative correlation between the two main traits, popping expansion and yield, which hinders simultaneous gains. The objective of this study was to investigate the use of a new variable or super trait, which favors the reliable selection of superior progenies. The super trait 'expanded popcorn volume per hectare' was ... more

A.T. do Amara Junior; D. Santos; I.F.S. Gerhardt; R.N.F. Kurosawa; N.F. Moreira; M.G. Pereira; deA. Gravina; F.H. de L. Silva
4/13/2017
Models, Genetic; Plant breeding; Quantitative Trait, Heritable; Sample Size; Zea mays

The objective of this study was to assess the sample size required for estimating the direct effects of explanatory variables on the grain yield of corn in the combinations formed by three types of hybrids x two harvests x nine scenarios of explanatory variables x two types of path analyses x four levels of accuracy. A total of 6340 plants were evaluated (361, 373, and 416 plants from single ... more

M. Toebe; C. Filho; L. Storck; A.D. Lúcio
05/25/2017
Flowers; Genotype; Plant breeding; Plant Development; Polymorphism, Genetic; Quantitative Trait, Heritable; Selection, Genetic; Zea mays

The aims of this study were to assess the linear relationships between agronomic and nutritional traits and to identify promising traits for indirect selection in early and super-early maturing maize genotypes. Two trials were run in the 2009/2010 agricultural year, each consisting of a randomized block design with three replications. One trial was run on 36 early maturing maize genotypes and ... more

B.M. Alves; C. Filho
06/29/2017
Fungi; Microsatellite Repeats; Plant breeding; Plant Immunity; Polymorphism, Genetic; Quantitative Trait, Heritable; Zea mays

Knowledge of genetic diversity among genotypes and relationships among elite lines is of great importance for the development of breeding programs. Therefore, the objective of this study was to evaluate genetic variability based on the morphoagronomic and molecular characterization of 18 elite popcorn (Zea mays var. everta) lines to be used by Universidade Estadual de Maringá breeding programs ... more

J.F.Dos Santos; C.A. Mangolin; M.F.P.S. Machado; C.A. Scapim; W. Giordani; L.S.A. Gonçalves
09/27/2017
Edible Grain; Models, Genetic; Plant breeding; Quantitative Trait, Heritable; Selection, Genetic; Selective breeding; Zea mays

Selection indices commonly utilize economic weights, which become arbitrary genetic gains. In popcorn, this is even more evident due to the negative correlation between the main characteristics of economic importance - grain yield and popping expansion. As an option in the use of classical biometrics as a selection index, the optimal procedure restricted maximum likelihood/best linear unbiased ... more

C. Vittorazzi; A.T.Amaral Júnior; A.G. Guimarães; A.P. Viana; F.H.L. Silva; G.F. Pena; R.F. Daher; I.F.S. Gerhardt; G.H.F. Oliveira; M.G. Pereira
12/02/2016
DNA, Plant; Edible Grain; Genetic variation; Hordeum; Minerals; Plant breeding; Quantitative trait loci; Selection, Genetic

Mineral elements in barley (Hordeum vulgare) play an important physiological role in global human health. In this study, quantitative trait loci (QTLs) for concentration of nine mineral elements in barley grain and grass powder were detected in a population of 193 recombinant inbred lines of the barley cross Ziguangmangluoerling x Schooner and the parents. We observed large genetic variation ... more

Y.W. Zeng; J. Du; X.M. Yang; X.Y. Pu; L.X. Wang; J.Z. Yang; L.J. Du; T. Yang; S.M. Yang; Z.H. Sun

Pages