Research Article

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2017 Jun 29
Glycine max; Hypocotyl; Models, Genetic; Neural Networks, Computer; Phenotype; Plant breeding; Quantitative Trait, Heritable

Classification using a scale of visual notes is a strategy used to select erect bean plants in order to improve bean plant architectures. Use of morphological traits associated with the phenotypic expression of bean architecture in classification procedures may enhance selection. The objective of this study was to evaluate the potential of artificial neural networks (ANNs) as auxiliary tools ... more

V.Q. Carneiro; G.N. Silva; C.D. Cruz; P.C.S. Carneiro; M. Nascimento; J.E.S. Carneiro
06/29/2017
Droughts; environment; genomic instability; Hybridization, Genetic; Models, Genetic; Plant breeding; Quantitative Trait, Heritable; Stress, Physiological; Zea mays

In several crops, the water deficit is perhaps the main limiting factor in the search for high yields. The objective of this study was to evaluate the phenotypic stability of maize hybrids in environments with and without water restriction using the analytical factor (AF) approach. We evaluated 171 maize hybrids in 14 environments, divided into environments with (A1, A2, A3, A4, A5, A6, and A7 ... more

A.O. Santos; J.J. Nuvunga; C.P. Silva; L.P.M. Pires; R.G. Von Pinho; L.J.M. Guimarães; M. Balestre
07/06/2017
Capsicum; Fruit; Microsatellite Repeats; Polymorphism, Genetic; Quantitative Trait, Heritable; Seed Bank

Characterization studies provide essential information for the conservation and use of germplasm in plant breeding programs. In this study, 103 Capsicum frutescens L. accessions from the Active Germplasm Bank of Embrapa Hortaliças, representative of all five Brazilian geographic regions, were characterized based on morphological characteristics and microsatellite (or simple sequence repeat - ... more

S.I.C. Carvalho; L.B. Bianchetti; C.F. Ragassi; C.S.C. Ribeiro; F.J.B. Reifschneider; G.S.C. Buso; F.G. Faleiro
08/17/2017
Brazil; Ecosystem; Genetic variation; Manihot; Quantitative Trait, Heritable

Genetic variability of cassava (Manihot esculenta Crantz) in Brazil is wide, being this the result of natural and cultural selection during pre- and post-domestication of the species in different environments. Given the number of species of the genus found in the region (38 of a total of 98 species), the central region of Brazil was defined as the primary center of cassava diversity. Therefore ... more

B.W. Zago; M.A.A. Barelli; E.S.S. Hoogerheide; C.L. Corrêa; G.I.S. Delforno; C.J. da Silva
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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
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
09/27/2017
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
09/27/2017
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
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

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