|
|
|
|
|
| Viana,José Marcelo Soriano. |
| The objectives of this work were to analyze theoretical genetic gains of maize due to recurrent selection among full-sib and half-sib families, obtained by Design I, Full-Sib Design and Half-Sib Design, and genotypic variability and gene loss with long term selection. The designs were evaluated by simulation, based on average estimated gains after ten selection cycles. The simulation process was based on seven gene systems with ten genes (with distinct degrees of dominance), three population classes (with different gene frequencies), under three environmental conditions (heritability values), and four selection strategies. Each combination was repeated ten times, amounting to 25, 200 simulations. Full-sib selection is generally more efficient than half-sib... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Design I; Full-sib families; Half-sib families; Tandem selection; Genetic gains. |
| Ano: 2007 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-204X2007001000003 |
| |
|
|
| Dalbosco,Edinéia Zulian; Krause,Willian; Neves,Leonarda Grillo; Araújo,Dejânia Vieira de; Hiega,Kemely Mara Ramalho; Silva,Cintia Graciele da. |
| Abstract Several traits must be observed in the selection of sour passion fruit progenies. For such, selection indices could be used for gradually increasing the frequency of favorable genotypes for the set of the traits of interest. This study aimed to compare parametric and non-parametric selection indices to be used in the selection of passion fruit progenies and identify the best economic weights. Thus, 118 full-sib families and three controls were assessed for days regarding flowering, productivity in kg ha-1 year, fruit mass in g, number of fruits, average length of fruits in mm, average fruit diameter in mm, fruit shape, average shell thickness in mm, pulp yield, pulp color, total soluble solids, titratable acidity and SS/ATT ratio. The... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Genetic gains; Recurrent selection; Passiflora edulis. |
| Ano: 2018 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-29452018000100801 |
| |
|
|
| Lopes,Rodrigo Ramos; Franke,Lucia Brandão; Souza,Cleber Henrique Lopes de; Bertoncelli,Patricia; Graminho,Larissa Arnhold; Ávila,Mariana Rockenbach de; Pereira,Emerson André; Motta,Eder Alexandre Minski da. |
| ABSTRACT This study aimed to estimate the genetic parameters, genetic correlations, genetic dissimilarity, and predicted gains with the selection of interspecific apomictic Paspalum plicatulum × Paspalum guenoarum hybrids in relation to seed yield traits. Nineteen genotypes that showed increased forage yield in previous studies were planted in a randomized complete block design with ten blocks. Traits evaluated in this study were: number of tillers/plant, number of reproductive tillers/plant, number of racemes/inflorescence, number of seeds/inflorescence, weight of a thousand seeds, and seed yield. Data were analyzed using a mixed model approach. The genotypes evaluated in our study showed improvement potential in relation to high heritability (H a 2... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Clustering analysis; Genetic correlation; Genetic gains; Genetic parameters; REML/BLUP. |
| Ano: 2019 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-35982019000100402 |
| |
|
|
| Cortes,Diego Fernando Marmolejo; Santa-Catarina,Renato; Azevedo,Alinne Oliveira Nunes; Poltronieri,Tathianne Pastana de Sousa; Vettorazzi,Julio Cesar Fiorio; Moreira,Nádia Fernandes; Ferreguetti,Geraldo Antônio; Ramos,Helaine Christine Cancela; Viana,Alexandre Pio; Pereira,Messias Gonzaga. |
| ABSTRACT: The selection of superior Carica papaya (L) genotypes depends on the availability of genetic variability and on the favorable and simultaneous response of the genotypes to those traits of most interest. However, manual phenotyping (MP) demands intensive labor, is time-consuming and expensive. The aim of the current study is to access the efficiency of image-based phenotyping (IBP) in estimating genetic parameters and in selecting F4 recombinant inbred lines. The genetic parameters and values were estimated in accordance with the REML/BLUB procedure and combined selection using the selection index based on standardized genetic values. The majority of traits accessed through IBP showed experimental coefficients of variation similar to those found... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Carica papaya; Digital phenotyping; Genetic gains; Genetic parameters. |
| Ano: 2018 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-90162018000300208 |
| |
|
|
| Santos, Fabrício Santana; UENF; Amaral Júnior, Antonio Teixeira do; UENF; Freitas Júnior, Silvério de Paiva; UENF; Rangel, Ramon Macedo; UENF; Scapim, Carlos Alberto; UEM; Mora, Freddy; UEM. |
| Although Brazil has reduced its importation of popcorn grain in recent years, the availability of improved varieties is still rare. In order to improve a popcorn population and to estimate the prediction of genetic gains, the third cycle of intrapopulation recurrent selection was carried out. One hundred ninety two half-sib families were obtained from the second cycle of the UNB-2U population and tested in a randomized complete block design with two replications within sets in two locations. The presence of statistical significance for sets for grain yield, poorly husked ear and broken plants proved the efficiency and the necessity for the use of the hierarchical statistical model by sets. Except for the poorly husked ear, there was significance for... |
| Tipo: Método |
Palavras-chave: 5.02.01.03-4 Genética e Melhoramento Florestal Zea mays; Produção de grãos; Melhoramento; Capacidade de expansão Melhoramento Vegetal Zea mays; Popcorn breeding; Genetic gains; Yield; Popping expansion. |
| Ano: 2008 |
URL: http://periodicos.uem.br/ojs/index.php/ActaSciAgron/article/view/3174 |
| |
|
|
| Guimarães, Isaías Porfírio; DoVale, Júlio César; Antônio, Rafaela Priscila; Aragão, Fernando Antônio Souza de; Nunes, Glauber Henrique de Sousa. |
| The aims of this study were to i) identify the influence of the GxE interaction in the selection of inbred lines of melon, and ii) test the efficiency of different indexes in the selection of inbred lines with a higher yield potential and better quality fruit. For these purposes, 98 inbred lines of yellow melon and two commercial controls, Vereda and AF-646, were evaluated in a randomized block design with two replications, at the conditions present in Mossoró and Baraúna. Analyses of the following traits were performed: fruit yield, mean fruit weight, pulp thickness, pulp firmness and soluble solids content. A complex portion of the GxE interaction was predominantly detected for all traits. The recommendation in this case is to promote selection in each... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: 5.01.03.05-9 Cucumis melo L; Segregant populations; Genetic gains; Inbred lines extraction; Hybrids; Selection indexes Melhoramento Vegetal. |
| Ano: 2016 |
URL: http://periodicos.uem.br/ojs/index.php/ActaSciAgron/article/view/26045 |
| |
|
|
|
