Research Article

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Cytogenetics; Magnoliopsida; Meiosis; Plant breeding; Pollen; Recombination, Genetic

The analysis of meiotic behavior has been widely used in the study of plants as they provide relevant information about the viability of a species. Meiosis boasts a host of highly conserved events and changes in genes that control these events will give rise to irregularities that can alter the normal course of meiosis and may lead to complete sterility of the plant. The recombination of genes ... more

M.P. Lavinscky; M.M. Souza; G.S. Silva; C.A.F. Melo
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
09/21/2017
Brazil; Flour; Food Industry; Glutens; Plant breeding; Protein Subunits; Triticum

Industrial wheat quality flour is related to gluten amount in grain. This study aimed to evaluate the relationship between high molecular weight (HMW) glutenins obtained by SDS-PAGE and gluten strength (W) obtained by the alveograph test and cropping environmental effect on wheat flour quality for Brazilian industry. Fifty-one cultivars/breeding lines were evaluated in three environments. The ... more

P.I. Chapla; E.S.N. Vieira; F.A. Franco; G.A. Linde; G.J. Silva; N.B. Colauto; V.S. Marchioro; I. Schuster
02/28/2021
Grain Production Physiology; Phaseolus vulgaris; Plant breeding; Quantitative genetics

A possible strategy to increase grain yield in common beans (Phaseolus vulgaris) is to obtain lines with earlier flowering and a longer grain filling period, associated with a higher dry matter accumulation rate. We examined the genetic control of these traits to investigate whether it is possible to select lines with earlier flowering, a longer period of ... more

S.R. Guilherme; A.F.B. Abreu; R.R. da Silva; M.A.P. Ramalho
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The insulin-like growth factor, IGF-I, plays an important role in the development of growth and reproductive traits. Single-strand conformation polymorphism analysis was used to detect and analyze polymorphisms and expression profiles of the IGF-I gene and its association with growth and reproductive traits of Jinghai yellow chickens. A point mutation g.295T>C was detected in the IGF-I gene ... more

M.A. Abdalhag; T. Li; L. Duan; T. Zhang; G. Zhang; J. Wang; Y. Wang
2/08/2017
Alleles; Brazil; Genetic variation; Genotype; Phenotype; Quantitative Trait, Heritable; Saccharum; Selection, Genetic; Time Factors

The aim of this study was to analyze sugarcane (Saccharum officinarum) biometric and technological data, obtained at different timepoints, using path analysis. The experiment was conducted in União, PI, Brazil, and evaluated 12 sugarcane genotypes (RB036066, RB9438, RB935744, RB021764, RB021754, RB021534, RB966229, RB977540, RB863129, and RB987935, and the varieties RB92579 and RB867515 as ... more

R.P. Barbosa; A. Neto; L.M. Gravina; G.A. Gravina; M.G.T. Portela; A.A.C. Bezerra
3/22/2017
Animals; Bayes Theorem; Breeding; Genetic markers; Genomics; Genotype; Models, Genetic; Polymorphism, Single Nucleotide; Predictive Value of Tests; Quantitative trait loci; Regression Analysis; Selection, Genetic

Genomic selection (GS) is a variant of marker-assisted selection, in which genetic markers covering the whole genome predict individual genetic merits for breeding. GS increases the accuracy of breeding values (BV) prediction. Although a variety of statistical models have been proposed to estimate BV in GS, few methodologies have examined statistical challenges based on non-normal phenotypic ... more

M. Nascimento; F.F.E. Silva; M.D.V. de Resende; C.D. Cruz; A.C.C. Nascimento; J.M.S. Viana; C.F. Azevedo; L.M.A. Barroso
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Capsicum; Fruit; Genetic markers; Genotype; Microsatellite Repeats; Polymorphism, Genetic; Quantitative Trait, Heritable

Capsicum peppers are native to the Americas, with Brazil being a significant diversity center. Capsicum baccatum accessions at Instituto Federal (IF) Goiano represent a portion of the species genetic resources from central Brazil. We aimed to characterize a C. baccatum working collection comprising 27 accessions and 3 commercial cultivars using morphological traits and molecular markers to ... more

A.L.A. Martinez; J.S.P. Araújo; C.F. Ragassi; G.S.C. Buso; F.J.B. Reifschneider
09/21/2017
Capsicum; Genetic variation; Genotype; Germination; Hypocotyl; Quantitative Trait, Heritable

The objective of this study was to estimate the genetic effects on in vitro germination and development of chili peppers. For this, four genotypes (UFPB-132, -134, -137, and -390) were used as parents. They were crossed in a complete diallel scheme. The parents (4) and hybrid (12) seeds were germinated in glass bottles containing MS media. The following variables were evaluated: seed ... more

P.A. Barroso; M.M. Rêgo; E.R. Rêgo; K.T.C. Ferreira
09/27/2017
Arecaceae; environment; Gene frequency; Genotype; Microsatellite Repeats; Phenotype; Polymorphism, Genetic; Selection, Genetic

This study uses ISSR molecular markers to characterize the demographic pattern, and spatial genetic structure (SGS) at different life stages of development (cohorts) in a natural population of Copernicia prunifera in the Rio Grande do Norte State, Brazil. All individuals were sampled and georeferenced in a 0.55-ha plot. The demographic analyses showed a clustered pattern in the first-distance ... more

L.G. Pinheiro; K.P.T. Chagas; A.S.M. Freire; M.C. Ferreira; C.G. Fajardo; F.A. Vieira

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