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| Registros recuperados: 28 | |
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| Andrade Júnior,Valter C de; Guimarães,Amanda G; Firme,Tiago D; Costa,Aline Aparecida A; Costa,Márcia Regina da; Lopes,Thabata Karoline; Souza,Rovilson José de; Resende,Francisco V. |
| ABSTRACT Correlations and path analysis between characteristics can aid the selection of important attributes in breeding programs. Thus, the objective of this work was to perform genotypic, phenotypic correlations and path analysis under commercial yield of garlic bulbs, depending on morphological and agronomic variables. The experiment was carried out in 2017 at the Universidade Federal dos Vales do Jequitinhonha e Mucuri and Universidade Federal de Lavras, using ten garlic genotypes, eight trials and two commercial cultivars, Caçador and Jonas. We evaluated: plant height; number of leaves, total bulb number; total bulb mass, total bulb yield, marketable bulb yield and number of cloves per bulb. The genotypic and phenotypic correlations were positive and... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Allium sativum; Genetic improvement; Indirect selection. |
| Ano: 2019 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-05362019000200204 |
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| SOARES, P.C.; SEDIYAMA, C.S.; CRUZ, C.D.; SILVA, J.C.. |
| Ensaios de competicao foram conduzidos em varzea, com e sem irrigacao controlada durante dois anos, entre linhagens F de arroz, oriundas de dois cruzamentos, selecionadas na geracao F. A partir da geracao F, as geracoes segregantes de cada cruzamento foram conduzidas, independemente, em cada um desses ambientes. Os objetivos foram verificar a possibilidade de se recomendar os mesmos genotipos de arroz para os sistemas de cultivo em varzea umida e sob irrigacao por inundacao continua e realizar, em apenas um dos ambientes, a selecao preliminar de linhagens de arroz que sejam promissoras para ambas as modalidades de cultivo, visando reduzir os custos operacionais dos programas de melhoramento genetico de arroz para as varzeas. Os resultados alcancados... |
| Tipo: Artigo em periódico indexado (ALICE) |
Palavras-chave: Oryza sativa; L; Melhoramento genetico; Selecao indireta; Genetic improvement; Indirect selection. |
| Ano: 1995 |
URL: http://www.alice.cnptia.embrapa.br/handle/doc/104207 |
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| da Silva, Alex Antonio; de Castro Carvalho, Regis; Carvalho Andrade, Marcela; Zeist, André Ricardo; Vilela Resende, Juliano Tadeu; Maluf, Wilson Roberto. |
| The aim of this study was to verify the resistance of tomato genotypes (crossed with Solanum galapagense) to the green peach aphid, Myzus persicae, and the association of this resistance with glandular trichomes. Leaf trichomes were quantified for seven F2 genotypes of the BPX-486 population derived from crossing S. lycopersicum ‘TOM-684’ and S. galapagense accession ‘LA-1401’, for the commercial controls ‘TOM-584’ and ‘Santa Clara’, and for the accession ‘LA-1401’. After this evaluation, the genotypes were subjected to two nonpreference resistance tests of the green peach aphid in the laboratory, one with choice and the other without choice. Five genotypes (BPX-486-17, BPX-486-62, BPX-486-10, BPX-486-46, and BPX-486-08) and the accession LA-1401... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Plant breeding; Insect pests; Leaf trichomes; Indirect selection plant breeding; Insect pests; Leaf trichomes; Indirect selection. |
| Ano: 2019 |
URL: http://periodicos.uem.br/ojs/index.php/ActaSciAgron/article/view/42704 |
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| Pandini,Fábio; Vello,Natal Antonio; Lopes,Ângela Celis de Almeida. |
| The objective of this research was to quantify heterosis of agronomic traits and evaluate direct and indirect correlations among seed yield and other traits. A diallel involving six parents was grown in two localities. Seed yield (PG), one-hundred seed weight (PCS), number of pods per plant (NV), weight of aerial part of the plant (PPA), harvest index (IC) and number of seeds per pod (NGV) were evaluated. Positive values of heterosis were detected for all traits. Estimates of heterosis components were significative for most traits, showing effects of aditivity and dominance. The specific heterosis was more important than the variety heterosis, mainly in the locality Anhembi. MTBR-95-123800 presented the best potential per se and as parent in crosses, but... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Breeding; Indirect selection; Correlations among traits; Path analysis; Glycine max. |
| Ano: 2002 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132002000600001 |
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| Paiva,José Teodoro de; Mourão,Gerson Barreto; Ferraz,José Bento Sterman; Mattos,Elisângela Chicaroni; Michelan Filho,Tércio; Campos,Bárbara Machado; Eler,Joanir Pereira; Gaya,Leila de Genova. |
| ABSTRACT: The intense selection process for economic traits conducted by the poultry breeding programs has been caused several changes in broiler meat quality. A database belonging to a selection program of a broiler male line was used to estimate heritability and genetic correlations for feed conversion ratio and meat quality traits, which were: initial and final pH, lightness, drip loss, thawing loss and shear force. Two-trait analyses were performed and the components of co(variance) and genetic parameters were determined using the Bayesian approach and the GIBBS3F90 software. The heritability estimate found for feed conversion ratio (0.52) showed high influence of direct additive genetic effects on the expression of this trait; therefore, this trait is... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Bayesian inference; Animal breeding; Genetic correlation; Indirect selection. |
| Ano: 2018 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-90162018000200129 |
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| Vandeputte, Marc; Puledda, Antonio; Tyran, Anne Sophie; Bestin, Anastasia; Coulombet, Celine; Bajek, Aline; Baldit, Gwenaelle; Vergnet, Alain; Allal, Francois; Bugeon, Jerome; Haffray, Pierrick. |
| Genetic parameters for carcass and fillet percentage were estimated in 760 European sea bass reared under commercial conditions and slaughtered at 573 days post fertilization (395 g mean body weight). Phenotyped fish were the offspring of 45 sires and 20 dams crossed in a factorial mating design. Pedigrees were re-constructed with 90.7% success using 12 microsatellites. The heritability of fillet yield was moderately low (0.21), while it was high for carcass yield (0.57). Both traits were poorly correlated (− 0.01 to 0.28) making space for their combined improvement. We investigated different predictors derived from measurement of surfaces on digital pictures and ultrasound measurements at several points of the body. The accuracy of the phenotypic... |
| Tipo: Text |
Palavras-chave: Ultrasound tomography; Genetics; Heritability; Indirect selection; Processing yields. |
| Ano: 2017 |
URL: http://archimer.ifremer.fr/doc/00361/47217/47173.pdf |
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| Donazzolo,Joel; Salla,Vanessa Padilha; Sasso,Simone Aparecida Zolet; Danner,Moeses Andrigo; Citadin,Idemir; Nodari,Rubens Onofre. |
| ABSTRACT: The objective of this paper was to identify the direct and indirect effects of feijoa fruits (Acca sellowiana) traitson pulp weight, in order to use these traits in indirect genotypes selection. Fruits of five feijoa plants were collected in Rio Grande do Sul, in the years of 2009, 2010 and 2011. Six traits were evaluated: diameter, length, total weight, pulp weight, peel thickness and number of seeds per fruit. In the path analysis, with or without ridge regression, pulp weight was considered as the basic variable, and the other traits were considered as explanatory variables. Total weight and fruit diameter had high direct effect, and are the main traits associated with pulp weight. These traits may serve as criteria for indirect selection to... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Acca sellowiana; Multicollinearity; Ridge path analysis; Indirect selection. |
| Ano: 2017 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782017000600203 |
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| Moreira,Sarah Ola; Kuhlcamp,Karin Tesch; Barros,Fabíola Lacerda de Souza; Oliveira,Sabrina Batista de; Trindade,Roberto dos Santos. |
| Abstract Correlations and path analysis allow the understanding of the interrelations between characteristics of interest to the plant breeding. However, in order for their results to be reliable, the undesirable effect of multicollinearity must be excluded. The objective of this study was to estimate the correlations and their partitioning in direct and indirect effects, by path analysis, on the fruit production per plant (FP) of papaya from the heterotic Solo and Formosa groups, using two different strategies to circumvent multicollinearity. Eleven agronomic variables were evaluated in twelve papaya genotypes from the Solo group and nine from the Formosa group. Path analysis was obtained with the FP as the basic variable and to eliminate... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Carica papaya L.; Ridge path analysis; Indirect selection; Correlations. |
| Ano: 2018 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-29452018000300802 |
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| Velho,Luis Paulo Saraiva; Gemeli,Murielli Sabrina; Trevisani,Nicole; Pereira,Thayse Cristine Vieira; Cerutti,Paulo Henrique; Melo,Rita Carolina de; Guidolin,Altamir Frederico; Coimbra,Jefferson Luís Meirelles; Corrêa,Sabrina Cristina. |
| Abstract: The objective of this work was to estimate the phenotypic correlation and the direct and indirect effects of the aerial part components of common bean (Phaseolus vulgaris) that are associated with root distribution, in order to facilitate the indirect selection for this character. Sixteen genotypes were used, from which 12 are segregating populations in the F6 generation and four are fixed populations, which were conducted in field conditions in a randomized complete block design, with two replicates. The root system evaluation was performed according to Böhm’s method. Pearson’s phenotypic correlation was estimated by the path analysis. The characters stem diameter, leaf area index, first pod set, and root angle showed the highest positive... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Phaseolus vulgaris; Abiotic stress; Indirect selection; Path analysis.. |
| Ano: 2017 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-204X2017000500328 |
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| SAKIYAMA, N. S.; RAMOS, H. C. C.; CAIXETA, E. T.; PEREIRA, M. G.. |
| Over the past three decades, molecular marker studies reachedextraordinary advances, especially for sequencing and bioinformatics techniques.Marker-assisted selectionbecamepart of the breeding program routines of important seed companies, in order to accelerate and optimize the cultivar developing processes. Private seed companies increasingly use marker-assisted selection, especially for the species of great importance to the seed market, e.g. corn, soybean, cotton, and sunflower. In the Brazilian public institutions few breeding programs use it efficiently.The possible reasons are: lack of know-how, lack of appropriate laboratories, few validated markers, high cost, and lack of urgency in obtaining cultivars. In this article we analyze the use and the... |
| Tipo: Artigo em periódico indexado (ALICE) |
Palavras-chave: Molecular marker; Indirect selection; MAS. |
| Ano: 2014 |
URL: http://www.alice.cnptia.embrapa.br/alice/handle/doc/1125251 |
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| Registros recuperados: 28 | |
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