Research Article

Related GMR Articles

2017 Sep 21
Genotype; Plant breeding; Quantitative Trait, Heritable; Selection, Genetic; Selective breeding; Soybeans

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, belonging to the Federal University of Uberlândia. A total of 37 soybean ... more

F.G. Teixeira; O.T. Hamawaki; A.P.O. Nogueira; R.L. Hamawaki; G.L. Jorge; C.L. Hamawaki; B.Q.V. Machado; A.J.O. Santana
2017 Sep 21
Annona; Genotype; Plant breeding; Polymorphism, Genetic; Selection, Genetic; Selective breeding

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 components and the prediction of the permanent phenotypic value were ... more

C.F.B. Sánchez; R.S. Alves; A.D.P. Garcia; P.E. Teodoro; L.A. Peixoto; L.A. Silva; L.L. Bhering; M.D.V. Resende
2017 Sep 27
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
2017 Sep 27
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
2017 Sep 27
Dietary Fiber; Hybridization, Genetic; Plant breeding; Polymorphism, Genetic; Quantitative Trait, Heritable; Saccharum; Selective breeding; Sucrose

The forecast of a growing energy demand in the coming years has aroused particular interest in biomass for energy cogeneration, to diversify the energy matrix by using clean and renewable sources. To meet the new demands of the sugarcane industry, this study evaluated the agronomic performance and estimated genetic parameters for yield traits in sugar- and energy cane families derived from ... more

A.R.Fernande Júnior; A.A.C. de Azeredo; R.A. de Oliveira; J.C.Bespalho Filho; O.T. Ido; E. Daros; B.P. Brasileiro
2017 Sep 27
Models, Genetic; Pennisetum; Plant breeding; Polymorphism, Genetic; Quantitative Trait, Heritable; Selective breeding

Genetically improved cultivars of elephant grass need to be adapted to different ecosystems with a faster growth speed and lower seasonality of biomass production over the year. This study aimed to use selection indices using mixed models (REML/BLUP) for selecting families and progenies within full-sib families of elephant grass (Pennisetum purpureum) for biomass production. One hundred and ... more

V.B. Silva; R.F. Daher; M.S.B. Araújo; Y.P. Souza; S. Cassaro; B.R.S. Menezes; L.M. Gravina; A.A.C. Novo; F.D. Tardin; A.T.Amaral Júnior
2017 Sep 27
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
Brazil; Edible Grain; environment; genomic instability; Genotype; Plant breeding; Quantitative Trait, Heritable; Selection, Genetic; Selective breeding; Soybeans

Biplot analysis has often been used to recommend genotypes from different crops in the presence of the genotype x environment interaction (GxE). The objective of this study was to verify the association between the AMMI and GGE biplot methods and to select soybean genotypes that simultaneously meet high grain yield and stability to the environments belonging to the Edaphoclimatic Region 402, ... more

E.U.Ramos Junior; R.L. Brogin; V.P.C. Godinho; F.J.E. Botelho; F.D. Tardin; P.E. Teodoro
2017 Sep 27
Ascomycota; Capsicum; Disease resistance; Fruit; Genotype; Models, Genetic; Plant breeding; Plant Diseases; Plant Leaves; Potyvirus; Quantitative Trait, Heritable; Selective breeding; Xanthomonas

This study aimed to identify Capsicum genotypes with resistance to bacterial spot (BS), anthracnose and Pepper yellow mosaic virus (PepYMV). Fifty-four genotypes of Capsicum spp were evaluated. Resistance reaction against BS was evaluated using three replicates, testing hypersensitivity and quantitative resistance in leaves. After evaluation, inoculated leaves were detached from the plants, ... more

C.S. Bento; A.G. de Souza; C.P. Sudré; S. Pimenta; R. Rodrigues
2017 Sep 27
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

Pages