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| Registros recuperados: 80 | |
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| SILVA, F. L. R. da; ARAÚJO, A. M. de. |
| Resumo: Avaliou-se a producao media diaria de leite de cabras do grupo genetico tricross da Embrapa Caprinos, durante quatro anos, num total de 680 lactacoes. O rebanho foi mantido em pastagem nativa com suplementacao mineral durante o ano, porem na epoca seca, o rebanho recebeu volumoso de silagem de sorgo, e concentrado a base de milho com farelo de soja. O rebanho tricross foi submetido a tres estacoes de monta por ano. O controle leiteiro foi feito uma vez por semana, de manha e a tarde. O trabalho teve como objetivo determinar as caracteristicas produtivas de leite de cabras Tricross(F1) e suas bimesticas(F2). As matrizes tricross(F2) foram 40% e 23% inferiores as tricross(F1), para a producao total de leite e producao media diaria, respectivamente, e... |
| Tipo: Circular Técnica (INFOTECA-E) |
Palavras-chave: Brasil; Ceará; Hybrid vigour.; Crossbreeding; Caprino; Cabra; Melhoramento genético animal; Cruzamento; Produção leiteira; Vigor híbrido; Goats; Genetic improvement; Milk production; Heterosis.. |
| Ano: 1999 |
URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/515303 |
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| SOBRAL, C. A. M.; OLIVEIRA, J. N. S.. |
| Embora o arroz seja tradicionalmente cuktivado no Estado , sendo atividade importante no setor agrícola, existem problemas relacionados com a falta de cultivares tolerante, ou resistentes às condições adversas do solo, clima, pragas, doenças que apresentem boa produtividade. Com essa finalidade foram conduzidos nos municípios de Porto Velho e Ouro Preto D'Oeste no ano agrícola 81/82, ensaios de competição de 18 genótipos de arroz de sequeiro nos quais foram avaliadas características agronômicas como produtividade, resistência ao acamamento, ciclo e tolerância a pragas e doenças. |
| Tipo: Outras publicações técnicas (INFOTECA-E) |
Palavras-chave: Melhoramento genetico; Genotipos; Brasil; Rondonia.; Arroz Sequeiro; Oryza Sativa.; Brazil; Genetic improvement; Rice.. |
| Ano: 1984 |
URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/698564 |
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| Goyard, Emmanuel; Goarant, Cyrille; Ansquer, Dominique; Brun, Pierre; De Decker, Sophie; Dufour, Robert; Galinie, C; Peignon, Jean-marie; Pham, Dominique; Vourey, Elodie; Harache, Yves; Patrois, Jacques. |
| Two populations of the Latin American shrimp Penaeus (Litopenaeus)stylirostris domesticated in Hawaii and in New Caledonia were previously shown to be genetically differentiated and proven highly inbred. In New Caledonia, where different Vibriosis affect shrimp production and antibiotic use is banned in growing ponds, the Hawaiian population was introduced to increase the allelic variability available for local shrimp farmers and start a genetic improvement program. Growth and survival rates of the two pure populations and the two-way F-1-hybrids obtained by breeding Hawaiian animals with New Caledonian animals were assessed in several simple experiments (earthen ponds, floating cages and experimental infection challenges) during two years on two... |
| Tipo: Text |
Palavras-chave: Vibriosis; Survival; Growth; Penaeus Litopenaeus stylirostris; Shrimp; Cross breeding; Genetic improvement. |
| Ano: 2008 |
URL: http://archimer.ifremer.fr/doc/2008/publication-4316.pdf |
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| Hernández Leal, Enrique. |
| El presente trabajo se realizó con el objetivo de generar germoplasma base para investigación en mejoramiento genético de jitomate (Solanum lycopersicum L.) por selección e hibridación. Se partió de la selección de siete híbridos de jitomate, tipo saladette de hábito de crecimiento indeterminado, los cuales fueron evaluados bajo un diseño experimental de bloques completos al azar con cuatro repeticiones. Los criterios de selección fueron: el aspecto general y sanidad de la planta, el tamaño y forma de fruto, el número de racimos de fruto y el número de frutos por racimo. Se seleccionaron tres plantas de cada tratamiento y de cada genotipo; las plantas se evaluaron y se extrajo la semilla de los frutos de las plantas seleccionadas, para poder generar la... |
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Palavras-chave: Solanum lycopersicum; Germoplasma; Mejoramiento genético; Genética; Maestría; Germoplasm; Genetic improvement. |
| Ano: 2012 |
URL: http://hdl.handle.net/10521/1811 |
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| Azevedo,Alcinei M; Silva,Derly José H da; Seus,Rogério; Freitas,Elis Marina de; Afonso,Daniel F; Gomes,Cristiane L; Aspiazú,Ignácio. |
| ABSTRACT Kale has a long vegetative cycle, requiring a lot of labor, due to the need for tutoring, thinning and multiple harvests, leading to difficulties in the maintenance and evaluation of experiments. Thus, the objective was to estimate the minimum number of evaluations for the assertive selection of half-sib progenies of kale by means of a repeatability study by Bayesian approach. Twenty four half-sib progenies were evaluated in a randomized block design with four replicates and five plants per plot. The number of shoots, number of marketable leaves, fresh mass of marketable leaves and fresh mass per leaf were measured throughout 15 harvests. All traits showed high estimates of the repeatability, indicating high regularity in the expression of the... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Brassica oleracea var. acephala; Repeatability; Genetic improvement; Production of leaves. |
| Ano: 2021 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-05362021000100020 |
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| Prchal, Martin; Vandeputte, Marc; Gela, David; Dolezal, Marek; Blichtova, Hana; Rodina, Marek; Flaishans, Martin; Kocour, Martin. |
| Fish are a rich source of omega-3 polyunsaturated fatty acids (n-3 PUFAs) and thus, they should be an integral part of human diet at least twice a week. As a result, high attention has been devoted to the improvement of fatty acids (FA) content in the flesh of farmed fish through nutrition. Conversely, there are very few data on the potential of selective breeding to improve FA composition in fish. We estimated genetic parameters of fillet fatty acid content and performance traits in market size common carp cultured under semi-intensive pond conditions. The experimental stock arose through factorial mating of 7 dams and 36 sires. All families were reared communally. Pedigree was reconstructed with microsatellite markers, and 158 individuals were dressed... |
| Tipo: Text |
Palavras-chave: Genetic correlations; Genetic improvement; Growth; Heritability; Slaughtering traits; Supplemental feeding. |
| Ano: 2018 |
URL: https://archimer.ifremer.fr/doc/00449/56043/57558.pdf |
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| Moreira, Juliana Prado; Shimizu, Jarbas Yukio; Sousa, Valderês Aparecida; Moraes, Mario Luis Teixeira de; Moura, Nara Fernandes; Aguiar, Ananda Virgínia de. |
| P. elliotii var. elliottii is the second most planted fast growing tree species in Brazilian subtropics for wood and resin production. The objective of this work was to predict genetic values of fast growing individual trees. A trial was established in a randomized complete blocks design involving 76 treatments, 75 open pollinated progenies from a clonal seed orchard and a commercial progeny as control, in a 3 m x 3 m spacing. Total heights of all individuals were measured at 1, 2, and 3 years old and also stem diameter at 1.3 m height- dbh at 3 years old. Deviance analysis was performed by using Selegen-REML/BLUP software and genetic parameters were estimated. Significant variation was detected among progenies. Estimates of narrow-sense individual... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: REML/BLUP; Genetic improvement; Genetic diversity; Repeatability; Heritability Melhoramento florestal REML/BLUP; Correlações; Diversidade genética; Ganho de seleção; Melhoramento genético. |
| Ano: 2014 |
URL: http://pfb.cnpf.embrapa.br/pfb/index.php/pfb/article/view/488 |
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| Schmidek,Anita; Costa,Mateus José Rodrigues Paranhos da; Mercadante,Maria Eugênia Zerlotti; Toledo,Luciandra Macedo de; Cyrillo,Joslaine Noely dos Santos Gonçalves; Branco,Renata Helena. |
| The objective of the present study was to evaluate the genetic and non-genetic effects that influence vigor at birth and preweaning mortality in Nellore calves. A total of 11,727 records of births that occurred between 1978 and 2006, offspring of 363 sires, were analyzed. Poor calf vigor at birth (VB) and preweaning mortality divided into stillbirth (SB), early mortality (EM) and total mortality (TM) were analyzed as binary variables. Generalized linear models were used for the evaluation of non-genetic effects and generalized linear mixed models for genetic effects (sire and animal models). The incidences were 4.75% for VB, 2.66% for SB, 5.28% for EM, and 7.99% for TM. Birth weight was the effect that most influenced the traits studied. Calves weighing... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Animal welfare; Beef cattle; Calf mortality; Genetic improvement; Risk factor. |
| Ano: 2013 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-35982013000600006 |
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| Azevedo,José Marlo Araújo de; Silva,Hellen Sandra Freires da; Assis,Giselle Mariano Lessa de; Santos,Laís Fernanda Andrade dos; Wolter,Priscila Ferreira. |
| The objective of this study was to verify the existence of genetic variability among accessions of Arachis repens based on vegetative morphological characters, identifying those which contribute least for distinction of those accessions. Nineteen accessions were evaluated in a completely randomized design with ten replicates, established in 4-m² plots. The traits evaluated were: basal leaflet length, basal leaflet width, apical leaflet length, apical leaflet width, petiole length, internode average length and internode diameter. The data obtained were submitted to univariate statistical analysis and accessions were grouped by the Scott-Knott test, at 1% of probability. The analysis of canonical variables and Tocher method were used to study the genetic... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Forage Peanut; Genetic improvement; Multivariate analysis. |
| Ano: 2011 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-35982011001000001 |
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| Fachinetto,Juliana Maria; Dall'Agnol,Miguel; Souza,Cleber Henrique Lopes de; Weiler,Roberto Luis; Simioni,Carine. |
| ABSTRACT The objective of this study was to assess the genetic diversity among accessions of Paspalum notatum based on morphological marker traits and identify those morphological traits that contribute most to the variability among accessions. Fifty-three accessions were evaluated for the following traits: length, width, color, and pubescence of sheath; length, width, insertion angle, color of midrib, and pubescence of leaves; number, length, and angle of racemes; length of flowering stems; and plant growth habit (erect or prostrate). Multivariate analysis of the quantitative morphological data based on the Mahalanobis distance and UPGMA method grouped the accessions into 19 heterogeneous clusters. The relative contribution of each trait to cluster... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Forage grass; Genetic improvement; Multivariate analysis. |
| Ano: 2017 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-35982017000900714 |
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| Pecina‑Quintero,Víctor; Anaya‑López,José Luis; Zamarripa‑Colmenero,Alfredo; Montes‑García,Noe; Nuñez‑Colín,Carlos; Solis‑Bonilla,Jose Luis; Aguilar‑Rangel,María Rocío; Prom,Louis. |
| The objective of this work was to evaluate the diversity and genetic relationships between lines and varieties of the sweet sorghum (Sorghum bicolor) germplasm bank of the National Institute for Forestry, Agriculture and Livestock Research, Mexico, using AFLP and SSR markers. The molecular markers revealed robust amplification profiles and were able to differentiate the 41 genotypes of sweet sorghum evaluated. Analysis of the frequency and distribution of polymorphic fragments allowed for the detection of unique (AFLP) and rare (SSR) alleles in several genotypes (RBSS‑8, RBSS‑9, RBSS‑25, RBSS‑32, and RBSS‑37), indicating that these markers may be associated with a feature that has not yet been determined or may be useful for the identification of these... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Sorghum bicolor; Biofuels; Genetic improvement; Molecular marker; Rare allele. |
| Ano: 2012 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-204X2012000800009 |
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| Registros recuperados: 80 | |
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