Research Article

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Hypocotyl; Models, Genetic; Neural Networks, Computer; Phenotype; Plant breeding; Quantitative Trait, Heritable; Soybeans

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
2017 Jun 29
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

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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
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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

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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

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Dietary Fiber; Hybridization, Genetic; Plant breeding; Polymorphism, Genetic; Quantitative Trait, Heritable; Saccharum; Selective breeding; Sucrose

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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
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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
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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

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