Research Article

Related GMR Articles

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
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
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 Aug 31
Alleles; Genotype; Hybridization, Genetic; Models, Genetic; Plant breeding; Polymorphism, Genetic; Quantitative Trait, Heritable; seeds; Zea mays

Genetic improvement is essential to achieve increments in maize (Zea mays L.) grain yield components. It may be obtained through crosses, which enable to exploit the effects of intervarietal heterosis, allelic complementarity, as well as gene actions and effects. This study estimated the components of variance and genetic parameters (REML/BLUP) of an intervarietal diallel to select and predict ... more

I.R. Carvalho; A.J. de Pelegrin; V.J. Szareski; M. Ferrari; T.C. da Rosa; T.S. Martins; N.L.Dos Santos; M. Nardino; V.Q. de Souza; A.C. de Oliveira; L.C. da Maia
2017 Jun 29
Adaptation, Physiological; environment; Gene-Environment Interaction; Genetic variation; Genotype; Plant breeding; Quantitative Trait, Heritable; Saccharum; Selection, Genetic

The recommendation of sugarcane clones depends on several factors, as the response or performance of the clones over different cuts or harvests. The clone by harvest interaction might be difficult to identify superior clones in the final stages of the sugarcane breeding program. Thus, the objective of this study was to investigate and describe the implications of the genotype by harvest ... more

D.N.A. Cabral; J.A.R. Nunes; P.D.S. Cabral; J. Zuchi; A.J. Raizer; T.O.M. De Paula
2017 Apr 13
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
2017 May 25
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
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 Jul 06
environment; Gene-Environment Interaction; Genotype; Plant breeding; Soybeans

Stratification of environments is a strategy to capitalize genotype x environment (GxE) interaction, which can optimize the process of assessment and cultivar recommendation, increasing productivity in a target environmental population. The objective of this study was to assess environmental stratification methods based on the analysis of GxE interaction, to identify consistent agronomic zones ... more

R.M. Pacheco; J.B. Duarte; R.G. Branquinho; P.I.D.M. Souza
2016 Dec 19
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

Pages