Consulta: subjectFacets:"Genetic improvement"
Registros recuperados: 80
Data/hora: 10/06/2024 11:06:13

RESPONSES OF COWPEA CULTIVARS TO SALINE STRESS
Provedor de dados: 196
Autores: Romanoski, Vanessa; de Moura Souza Filho, Paulo Roberto; Badaró Pimentel, Adérico Júnior.
The cowpea [Vigna unguiculata (L.) Walp] is widely cultivated in Northeast Brazil and stands out for its economic and social importance. Part of the cultivation area is affected by salt stress, which affects the performance of the crop. The effects of salinity can be mitigated with the development of tolerant cultivars. The objective of this work was to evaluate the behavior of cowpea cultivars under different levels of saline stress in the germination and emergence phases of the crop. Two trials evaluating the germination and emergence phases were conducted, under controlled conditions, in a factorial scheme with 11 cultivars and five solution of NaCl with concentrations ranging from 0 to 120 mM. There was a marked difference in the response of the...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Vigna unguiculata; Melhoramento genético; Estresse abiótico; Germinação; Emergência; Vigna unguiculata; Genetic improvement; Abiotic stress; Germination; Emergency.
Ano: 2023
URL: http://periodicosonline.uems.br/index.php/agrineo/article/view/7230

Derivación de líneas de generaciones tempranas de híbridos de jitomate (Solanum lycopersicum L.).
Provedor de dados: 32
Autores: 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...
Palavras-chave: Solanum lycopersicum; Germoplasma; Mejoramiento genético; Genética; Maestría; Germoplasm; Genetic improvement.
Ano: 2012
URL: http://hdl.handle.net/10521/1811

Parámetros genéticos e interacción genotipo x ambiente en características de crecimiento en un ensayo de progenies de Pinus patula Schiede ex Schltdl. et Cham.
Provedor de dados: 32
Autores: Morales González, Erick.
Los programas de mejoramiento genético tienen la finalidad de producir semilla genéticamente superior para llevar a cabo plantaciones comerciales, o mejorar la supervivencia y adaptación de progenies en reforestaciones. En el año 2001, se inició un programa de mejoramiento con Pinus patula Schiede ex Schltdl. et Cham. en la región de Aquixtla, Puebla. Como parte del mismo, en julio del 2005 se estableció un ensayo de progenies en dos sitios ubicados a diferente elevación (S1=2,660 y S2=2,980 m), con el objetivo de evaluar el desempeño de familias de polinización libre (medios hermanos), así como estimar algunos parámetros genéticos. En el ensayo se incluyeron 84 familias de medios hermanos con un diseño de bloques incompletos al azar con 20 repeticiones y...
Palavras-chave: Pinus patula; Ensayo de progenies; Mejoramiento genético; Adaptación; Interacción genotipo x ambiente; Correlaciones genéticas tipo-B; Progeny test; Genetic improvement; Adaptation; Genotype x environment interaction; Type-B genetic correlations; Maestría; Forestal.
Ano: 2012
URL: http://hdl.handle.net/10521/681

Soybean genetic transformation: a valuable tool for the functional study of genes and the production of agronomically improved plants
Provedor de dados: 74
Autores: Homrich,Milena Schenkel; Wiebke-Strohm,Beatriz; Weber,Ricardo Luís Mayer; Bodanese-Zanettini,Maria Helena.
Transgenic plants represent an invaluable tool for molecular, genetic, biochemical and physiological studies by gene overexpression or silencing, transposon-based mutagenesis, protein sub-cellular localization and/or promoter characterization as well as a breakthrough for breeding programs, allowing the production of novel and genetically diverse genotypes. However, the stable transformation of soybean cannot yet be considered to be routine because it depends on the ability to combine efficient transformation and regeneration techniques. Two methods have been used with relative success to produce completely and stably transformed plants: particle bombardment and the Agrobacterium tumefaciens system. In addition, transformation by Agrobacterium rhizogenes...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Transgenic plants; Particle bombardment; Agrobacterium systems; Functional analysis; Genetic improvement.
Ano: 2012
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-47572012000600015

Genetic divergence among populations and accessions of the spineless peach palm from Pampa Hermosa landrace used in the heart-of-palm agribusiness in Brazil
Provedor de dados: 74
Autores: Alves-Pereira,Alessandro; Clement,Charles R.; Picanço-Rodrigues,Doriane.
Although originally domesticated for its fruit, exploitation of the peach palm (Bactris gasipaes Kunth) in the production of gourmet heart-of-palm has also become an important activity, hence the need for improved material for large-scale production, on employing the Pampa Hermosa landrace as the seed source. In this study 11 microsatellite markers were used to evaluate genetic divergence among 96 elite plants representing four populations of spineless peach palm from the above cited source. Genetic variability was high (H T = 0.82). The low levels of divergence [F ST (0.023), G ST' (0.005)] and the high number of migrants (Nm -3.8 to 52.2) indicated significant interpopulation gene flow. Some of the plants presented high levels of genetic divergence, but...
Tipo: Info:eu-repo/semantics/other
Palavras-chave: Bactris gasipaes; Heart-of-palm; Microsatellites; Genetic divergence; Genetic improvement.
Ano: 2012
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-47572012000300015

Conservation implications of the mating system of the Pampa Hermosa landrace of peach palm analyzed with microsatellite markers
Provedor de dados: 74
Autores: Picanço-Rodrigues,Doriane; Astolfi-Filho,Spartaco; Lemes,Maristerra R.; Gribel,Rogerio; Sebbenn,Alexandre M.; Clement,Charles R.
Peach palm (Bactris gasipaes) is cultivated by many indigenous and traditional communities from Amazonia to Central America for its edible fruits, and is currently important for its heart-of-palm. The objective of this study was to investigate the mating system of peach palm, as this is important for conservation and breeding. Eight microsatellite loci were used to genotype 24 open-pollinated progenies from three populations of the Pampa Hermosa landrace maintained in a progeny trial for genetic improvement. Both the multi-locus outcrossing rates (0.95 to 0.99) and the progeny level multi-locus outcrossing rates (0.9 to 1.0) were high, indicating that peach palm is predominantly allogamous. The outcrossing rates among relatives were significantly different...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Bactris gasipaes; Bi-parental inbreeding; Genetic improvement; Genetic conservation; Outcrossing.
Ano: 2015
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-47572015000100059

Artificial family selection based on growth rate in cultivated lines of Litopenaeus vannamei (Decapoda, Penaeidae) from Venezuela
Provedor de dados: 74
Autores: De Donato,Marcos; Ramirez,Raúl; Howell,Chris; Verginelli,Roberto; Orta,Tomás; Cabrera,Saúl; Mata,Enrique; Manrique,Ramón.
We investigated the effects of family selection on the growth rates of four genetic lines of Litopenaeus vannamei, the Pacific white shrimp, from Venezuela. The mean family weight at selection was 16.79 g and the mean growth rate was 0.169 g d-1 at a mean age of 138 days. The mean growth rates per generation were 0.141 g d-1 for the parental generation (P0), 0.173 g d-1 for the F1 and 0.191 g d-1 for the F2. Survival varied from 83.3% to 94.4%. There were statistically significant differences between lines, with lines B and C, growing at higher temperatures and lower salinities, showing the fastest growth. Regression analysis between growth rate and age for each genetic line showed high r² values, but smaller than those shown between growth rate and...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Family selection; Genetic improvement; Growth rate; Litopenaeus vannamei.
Ano: 2008
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-47572008000500009

Determination of the optimal number of evaluations in half-sib progenies of kale by Bayesian approach
Provedor de dados: 75
Autores: 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

Associations between morphological and agronomic characteristics in garlic crop
Provedor de dados: 75
Autores: 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

Catálogo de Videiras (Vitis spp.) conservadas na Embrapa Semiárido: uvas para processamento.
Provedor de dados: 14
Autores: LEAO, P. C. de S.
A cultura da videira (Vitis spp.) é uma das mais importantes do Brasil. O país é um dos líderes mundiais na produção de uvas, com destaque para o Submédio do Vale do São Francisco, região que produz uvas para os mercados internos e externo, chegado a exportar para os Estados Unidos e países da União Europeia. O destaque do Submédio do Vale do São Francisco na produção de uvas é atribuído principalmente ao emprego de tecnologias como irrigação por gotejamento, fertirrigação e o emprego de cultivares adaptadas às condições edafoclimáticas da região. Tudo isso foi possível devido a investimentos em pesquisas científicas, um dos pilares para o desenvolvimento sustentável. Neste cenário, destaca-se a Embrapa Semiárido, que tem como um dos principais objetivos...
Tipo: Documentos (INFOTECA-E)
Palavras-chave: Videira; Melhoramento genético; Vale do São Francisco; Uva; Variedade; Comportamento de Variedade; Banco de Germoplasma; Melhoramento Genético Vegetal; Grapes; Genetic improvement; Breeding and Genetic Improvement.
Ano: 2020
URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/1130651

Ações de pesquisa e desenvolvimento para o uso diversificado de espécies comerciais e silvestres de maracujá (Passiflora spp.).
Provedor de dados: 14
Autores: FALEIRO, F. G.; JUNQUEIRA, N. T. V.; COSTA, A. M.
bitstream/item/143339/1/doc-329.pdf
Tipo: Documentos (INFOTECA-E)
Palavras-chave: Melhoramento genético; Passion fruit.; Biodiversidade; Maracujá; Melhoramento Vegetal.; Genetic improvement; Plant breeding.
Ano: 2015
URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/1038064

Melhoramento genético e inseminação artificial em caprinos.
Provedor de dados: 14
Autores: MACHADO, R.
Metodos de melhoramento; Eficiência reprodutiva e melhoramento genético; A inseminação artificial como ferramenta de melhoramento; Tecnologia do sêmen caprino; Uso do sêmen caprino congelado.
Tipo: Documentos (INFOTECA-E)
Palavras-chave: Caprino; Melhoramento genético animal; Genética animal; Inseminação artificial; Sêmen.; Goats; Genetic improvement; Animal genetics; Artificial insemination.
Ano: 1993
URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/514933

Aplicação de descritores morfoagronômicos utilizados em ensaios de DHE de cultivares de maracujazeiro-doce, ornamental, medicinal, incluindo espécies silvestres e híbridos interespecíficos (Passiflora spp.): manual prático.
Provedor de dados: 14
Autores: JESUS, O. N. de; OLIVEIRA, E. J. de; SOARES, T. L.; FALEIRO, F. G.
bitstream/item/146347/1/jesus-02.pdf
Tipo: Fôlder / Folheto / Cartilha (INFOTECA-E)
Palavras-chave: Maracujá-doce; Passiflora spp; Cultivar; Melhoramento genético; Passion fruit.; Biotecnologia.; Genetic improvement; Biotechnology; Varieties.
Ano: 2015
URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/1048464

Competicao de genotipos de arroz (Oryza sativa L.) de sequeiro em Rondonia.
Provedor de dados: 14
Autores: 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

Banco de Dados de Genótipos e Fenótipos (BDGF) para suporte a estudos de associação genômica ampla e seleção genômica em programas de melhoramento animal.
Provedor de dados: 14
Autores: HIGA, R. H.; OLIVEIRA, G. B. de.
Este documento complementa os trabalhos previamente desenvolvidos, apresentando um modelo de dados para armazenamento de dados de genótipos, fenótipos e pedigree de animais de interesse agropecuário para suporte tanto a experimentos de GWAS quanto a programas de melhoramento genético animal, Banco de Dados de Genótipos e Fenótipos(BDGF).
Tipo: Documentos (INFOTECA-E)
Palavras-chave: Associação genômica; Genome-wide association studies.; Genótipo; Fenótipo; Melhoramento Animal.; Genotype; Phenotype; Genetic improvement.
Ano: 2015
URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/1022327

Caracteristicas produtivas de cabras 1/2 Anglo-Nubiana + 1/4 Pardo Alpina + 1/4 Moxotó (Tricross).
Provedor de dados: 14
Autores: 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

Análise gráfica biplot na seleção de genótipos de cajueiro.
Provedor de dados: 14
Autores: SERRANO, L. A. L.; MELO, D. S.; MAIA, M. C. C.; VIDAL NETO, F. das C.; BARROS, L. de M.; CRUZ, C. D.; OLIVEIRA, L. C. de; ARAÚJO, L. B. DE; MEDINA, L. M.; LIMA, P. S. da C.
As variáveis produtivas e de reação a pragas e doenças são os principais alvos do programa de melhoramento genético do cajueiro. O objetivo deste trabalho foi realizar uma seleção precoce em uma população segregante de cajueiro por meio da análise gráfica biplot para as variáveis de produção e reação à traça-da-castanha e ao oídio.
Tipo: Folhetos
Palavras-chave: Anacampsis phytomiella; Erysiphe quercicola; Análise multivariada; Anacardium Occidentale; Melhoramento Genético Vegetal; Caju; Anacardium; Cashew fruit; Genetic improvement; Multivariate analysis.
Ano: 2022
URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/1150261

[Anais...]
Provedor de dados: 14
Autores: JORNADA CIENTÍFICA EMBRAPA GADO DE CORTE, 12., 2016, Campo Grande, MS.
O estudo do comportamento materno-filial se torna importante por permitir classificar as ovelhas pela sua reatividade, resultando em maior sobrevivência dos cordeiros, o produto comercial da ovinocultura. Objetivou-se caracterizr as variáveis do comportamento materno de ovinos pantaneiros no período do periparto e correlacionar com as características produtivas. Foram utilizadas 27 ovelhas pantaneiras com idade média de 3,8 anos e peso corporal médio de 47 kg. As observações do comportamento ocorreram desde o início do parto até 2 horas após, quando foram registradas as seguintes observações: permanência da ovelha parturiente com o rebanho, grau de agitação durante o parto, postura corporal e tempos de latência do cordeiro para ficar em pé e para mamar....
Tipo: Documentos (INFOTECA-E)
Palavras-chave: Gado de corte; Ovino; Produção animal; Sanidade animal; Nutrição animal; Melhoramento genético animal; Pastagem; Beef cattle; Sheep; Animal production; Animal health; Animal nutrition; Genetic improvement; Pastures.
Ano: 2016
URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/1066859

Multiatr: a tool for ranking of pairwise alternatives.
Provedor de dados: 14
Autores: LOBO, R. N. B.
The decision-making process is complex and often demands time and difficulties for managers, project coordinators and, especially here, specialists in genetic improvement programs. Tools that can help this process are always welcome and are added to other alternatives for a correct and efficient decision. Despite the possibility of being used in several areas of knowledge, the MultiAtr software was specially developed for the definition of weights for the selection objectives of animal breeding programs. Its use in interviews with specialists, breeders and scholars can contribute to the direction of these programs by the scientists involved in this decision. Based on this, it is recommended, for the scientific community and other decision-making actors,...
Tipo: Folhetos
Palavras-chave: Breeding programs; Decision support systems; Animal breeding; Genetic improvement; Computer software.
Ano: 2021
URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/1137605

Sugarcane: drought tolerant sugarcane variety.
Provedor de dados: 14
Autores: MOLINARI, H. B. C.
Genetically modified sugarcane with increased tolerance to high environmental temperatures and prolonged water restriction.
Tipo: Folders
Palavras-chave: Cana de Açúcar; Melhoramento Genético Vegetal; Sugarcane; Genetic improvement; Drought tolerance.
Ano: 2021
URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/1132976

Genotipagem por meio de marcadores SNP em cevada (Hordeum vulgare): um estudo de caso em cultivares e populações resultantes de retrocruzamentos.
Provedor de dados: 14
Autores: MUDADU, M. de A.; LAU, E. Y.; PEREIRA, J. F.; MINELLA, E.
Este documento representa o primeiro passo no sentido de aumentar a utilização de marcadores SNP em cevada por grupos de pesquisa no Brasil. As formas de obtenção e análise dos dados são detalhadas utilizando-se estudo de caso sobre diversidade genética de cultivares e incorporação de um importante gene por meio de cruzamento e retrocruzamentos. Este relato aproveita a experiência de pesquisadores da Embrapa Trigo e da Embrapa Informática Agropecuária e abre a possibilidade para que milhares de marcadores SNP possam ser utilizados para diferentes finalidades, potencializando um melhoramento de cevada mais preciso e com maiores ganhos genéticos.
Tipo: Documentos (INFOTECA-E)
Palavras-chave: Marcador molecula; Chip SNP; Genotipagem; Melhoramento genético; Cevada; Hordeum Vulgare; Single nucleotide polymorphism; Genetic improvement; Genotyping.
Ano: 2019
URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/1116075

Programa de Melhoramento Genético de Caprinos Leiteiros - Capragene®; sumário de avaliação genética - Ano 2014 - raça Saanen.
Provedor de dados: 14
Autores: FACO, O.; LOBO, R. N. B.; FONSECA, J. F. da; LOBO, A. M. B. O.; VERNEQUE, R. da S.; PIMENTEL, C. M. M.; PAIVA, S. R.
Neste documento estão apresentados os métodos e os resultados da avaliação genética para produção de leite até 305 dias de lactação de animais (machos e fêmeas) da raça Saanen. Espera-se que a publicação deste primeiro sumário de avaliação genética do Programa de Melhoramento Genético de Caprinos Leiteiros, fruto do esforço e comprometimento de vários parceiros, mas principalmente dos criadores, converta-se num marco para a caprinocultura leiteira nacional e também sirva de convite para novas adesões a esta iniciativa.
Tipo: Fôlder / Folheto / Cartilha (INFOTECA-E)
Palavras-chave: Raça Saanen; Sumário; Programa Capragene; Ganho genético; Dairy goat; Genética animal; Melhoramento genético animal; Cabra leiteira; Leite; Teste de progênie; Goats; Genetic improvement; Animal genetics; Breeding; Progeny testing.
Ano: 2014
URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/1000132

SGR - Flock Management System User Notes (Version 2.0 Build 20121106).
Provedor de dados: 14
Autores: LOBO, R. N. B.
bitstream/item/94311/1/LV-Ingles-SGR-Sistema-de-Gerenciamento-de-Rebanhos.pdf
Tipo: Outras publicações técnicas (INFOTECA-E)
Palavras-chave: Record; Agricultural sector; Computational tool; Software development.; Caprino; Ovino; Registro; Genetic improvement; Goats; Sheep.
Ano: 2013
URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/974316

[Anais...]
Provedor de dados: 14
Autores: JORNADA CIENTÍFICA EMBRAPA GADO DE CORTE, 13., 2017, Campo Grande, MS.
Identificação de biomarcadores para qualidade da carne de animais Nelore e Brangus; Seleção de genitoras no melhoramento de Panicum maximum Jacq.; Plataforma de monitoramento de populações de mosca-dos-estábulos e alertas para surtos; Análise de caracteres quantitativos de cultivares de Brachiaria em estádio juvenil; Raças Guzerá, Senepol e Caracu em cruzamentos simples e triplos: desempenho durante a fase de cria e recria em sistema de pastejo; Efeito da raça paterna e do mérito genético para acabamento sobre o desempenho na recria de novilhos precoces; Análise comparativa de métodos de genotipagem para avaliação da Síndrome da Musculatura Dupla em bovinos de corte; Snooper: dispositivo de monitoramento por sensores de ambientes e equipamentos críticos;...
Tipo: Documentos (INFOTECA-E)
Palavras-chave: Gado de corte; Ovino; Produção animal; Sanidade animal; Nutrição animal; Melhoramento genético animal; Pastagem; Sheep; Genetic improvement; Animal nutrition; Animal health; Animal production; Grasslands.
Ano: 2017
URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/1077424

Banco de dados de genótipos para suporte à seleção genômica em programas de melhoramento animal.
Provedor de dados: 14
Autores: HIGA, R. H.; DIAS, V. F.; CORREA, J. L.; OLIVEIRA, G. B. de.
Escopo. Modelo de dados. Descrição de genótipos. Descrição das tabelas. Entrada e saída de dados. Análise de desempenho. Análise de desempenho.
Tipo: Documentos (INFOTECA-E)
Palavras-chave: Melhoramento genético; Genótipos; Banco de dados; Genotype; Genetic improvement.
Ano: 2013
URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/980977

[Resumos dos trabalhos...].
Provedor de dados: 14
Autores: JORNADA CIENTÍFICA EMBRAPA GADO DE CORTE, 15., 2019, Campo Grande, MS.
bitstream/item/198895/1/15-Jornada-cientifica-Embrapa-Gado-Corte.pdf
Tipo: Documentos (INFOTECA-E)
Palavras-chave: Gado de Corte; Melhoramento Genético Animal; Nutrição Animal; Pastagem; Produção Animal; Sanidade Animal; Cattle; Genetic improvement; Animal nutrition; Grazing; Animal production; Animal health.
Ano: 2019
URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/1110154

Obtenção de híbridos entre variedades Tommy Atkins e Espada no programa de melhoramento genético da mangueira desenvolvido na Embrapa Semi-Árido.
Provedor de dados: 14
Autores: LIMA NETO, F. P.; SANTOS, C. A. F.; LIMA FILHO, J. M. P.
bitstream/CPATSA/36024/1/OPB1401.pdf
Tipo: Artigo de divulgação na mídia (INFOTECA-E)
Palavras-chave: Tommy Atkins; Espada; Programa; Melhoramento genético; Melhoramento genentico; Papaya; Manga; Regulador de crescimento; Hibrido; Variedade; Genetic improvement.
Ano: 2007
URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/159358

Cana-de-açúcar: variedade de cana-de-açúcar resistente a insetos-praga e tolerante a herbicidas.
Provedor de dados: 14
Autores: MOLINARI, H. B. C.
Cana-de-açúcar geneticamente modificada com resistência à broca-da-cana (Diatraea saccharalis) e tolerância ao herbicida glifosato. Tecnologia de grande importância econômica para o setor sucroenergético, resultado de parceria entre a startup PangeiaBiotech e a Embrapa Agroenergia.
Tipo: Fôlder / Folheto / Cartilha (INFOTECA-E)
Palavras-chave: Cana de Açúcar; Engenharia Genética; Herbicida; Cane sugar; Herbicides; Genetic improvement; Genetic engineering; Diatraea.
Ano: 2020
URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/1124706

Pinhão-manso: cultivar de pinhão-manso com maior produtividade de óleo.
Provedor de dados: 14
Autores: LAVIOLA, B. G.
Cultivar de pinhão-manso com maior produtividade de óleo para inserção na matriz energética de biocombustíveis no Brasil.
Tipo: Fôlder / Folheto / Cartilha (INFOTECA-E)
Palavras-chave: Pinhão-manso; Cultivar; Melhoramento Genético Vegetal; Produtividade; Genetic improvement.
Ano: 2020
URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/1124398

Melhoramento vegetal e recursos genéticos forrageiros.
Provedor de dados: 14
Autores: ROCHA, J. E. da S.
A criação animal no Brasil é predominantemente extensiva em pastos cultivados ou nativos a depender da região. No semiárido a limitação de precipitação pluviométrica dificulta a manutenção de pastos cultivados, e a dependência pela vegetação nativa se torna maior. Embora exista inúmeras opções de gramíneas e leguminosas forrageiras que podem enriquecer a pastagem nativa, na região semiárida as opções disponíveis nos mercados formais são restritas e muitas vezes as sementes comercializadas não são validadas para a região. Para disponibilizar aos produtores forrageiras adaptadas às condições de manejo e clima, programas de melhoramento genético de forrageiras devem avaliar os acessos presentes em Banco Ativo de Germoplasma da Embrapa e de instituições...
Tipo: Documentos (INFOTECA-E)
Palavras-chave: Melhoramento genético vegetal; Recurso genético; Planta forrageira; Genetic resources; Plant breeding; Genetic improvement.
Ano: 2014
URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/1007405

Aplicação de descritores morfoagronômicos utilizados em ensaios de DHE de cultivares de maracujazeiro-azedo (Passiflora edulis Sims): manual prático.
Provedor de dados: 14
Autores: JESUS, O. N. de; OLIVEIRA, E. J. de; SOARES, T. L.; FALEIRO, F. G.
bitstream/item/145206/1/jesus-01.pdf
Tipo: Fôlder / Folheto / Cartilha (INFOTECA-E)
Palavras-chave: Maracujá-azedo; Cultivar; Melhoramento genético; Passion fruit.; Biotecnologia; Passiflora Edulis.; Genetic improvement; Biotechnology; Varieties.
Ano: 2015
URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/1048462

Sugarcane: Sugarcane variety resistant to insect pests and herbicides.
Provedor de dados: 14
Autores: MOLINARI, H. B. C.
Genetically modified sugarcane with resistance to sugarcane borer (Diatraea saccharalis) and glyphosate. A technology of great economic importance for the sugar-energy sector, the result of a partnership between startup PangeiaBiotech and Embrapa Agroenergia.
Tipo: Folders
Palavras-chave: Genetic modification; Sugarcane; Herbicides; Pests; Genetic improvement.
Ano: 2021
URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/1133110

Teste de desempenho de ovinos Santa Inês e Somalis Brasileira da EMBRAPA-CNPC.
Provedor de dados: 14
Autores: BARROS, N. N.; ARAUJO, A. M. de; SILVA, F. L. R. da.
bitstream/item/26702/1/COT-36.pdf
Tipo: Comunicado Técnico (INFOTECA-E)
Palavras-chave: Teste de desempenho; Brasil; Ceará; Performance testing.; Ovino; Melhoramento genético animal; Genética animal; Performance; Sheep; Genetic improvement; Brazil.
Ano: 1998
URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/514956

Análise de trilha dos componentes de produtividade de grãos em feijão-caupi.
Provedor de dados: 14
Autores: ABREU, H. K. A. de; FACHINELLI, R.; MELO, T. S.; CORREIA, M. V.; CECCON, G.
bitstream/item/190115/1/ORAL20.pdf
Tipo: Outras publicações técnicas (INFOTECA-E)
Palavras-chave: Cowpea beans; Vigna Unguiculata; Melhoramento Genético Vegetal; Feijão de Corda; Genetic improvement.
Ano: 2018
URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/1103452

Melhoramento genético de eucaliptos para desenvolvimento de cultivares destinadas a múltiplos usos da madeira e de populações com potencial para superar possíveis adversidades ocasionadas por mudanças climáticas.
Provedor de dados: 14
Autores: SANTOS, P. E. T. dos; PALUDZYSZYN FILHO, E.; SCHUHLI, G. S. e; GERHARDT, I. R.; OLIVEIRA, V. R. de.
O objetivo do projeto foi ampliar as oportunidades de experimentação a campo, de melhoramento em multiambientes e de validação de produtos, contribuindo para que a expansão territorial das plantações de eucalipto, mesmo sob possíveis efeitos das mudanças climáticas globais, aconteça no futuro de forma menos sujeita a riscos de comprometimento das produções.
Tipo: Capítulo em livro técnico (INFOTECA-E)
Palavras-chave: Melhoramento genético; Mudanças climáticas; Eucalipto; Mudança Climática; Eucalyptus; Genetic improvement; Climate change.
Ano: 2021
URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/1137168

Búfalos: o produtor pergunta, a Embrapa responde.
Provedor de dados: 14
Autores: MARQUES, J. R. F.
Introdução; Origem; Alimentação; Sanidade; Eficiência reprodutiva; Cria, recria e engorda; Melhoramento genético; Produtos; Instalações zootécnicas; Trabalho animal; Administração.
Tipo: Col Criar Plantar ABC 500P/500R Saber (INFOTECA-E)
Palavras-chave: Búfalo; Bubalus Bubalis; Melhoramento Genético Animal; Nutrição Animal; Sanidade Animal; Eficiência Reprodutiva; Breeding methods; Foods; Animal breeding; Animal diseases; Animal nutrition; Genetic improvement; Reproductive efficiency.
Ano: 2013
URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/1124385

Ensaio comparativo preliminar de arroz de sequeiro favorecido - 1984/85.
Provedor de dados: 14
Autores: FERREIRA, R. de P.; SANT'ANA, E. P.
bitstream/item/60550/1/PA-1601-0001.pdf
Tipo: Outras publicações técnicas (INFOTECA-E)
Palavras-chave: Melhoramento genetico; Brasil; Rondonia.; Arroz Sequeiro; Oryza Sativa.; Brazil; Genetic improvement; Rice.
Ano: 1986
URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/698584

Résistance de la crevette Litopenaeus stylirostris à la bactérie pathogène Vibrio penaeicida : Physiologie, immunologie et pathologie comparées d’une population sélectionnée sur un critère de survie aux épisodes de mortalité et d’une population témoin non sélectionnée.
Provedor de dados: 5
Autores: De Decker, Sophie.
The New-Caledonian shrimp industry is based on the controlled reproduction of the shrimp Litopenaeus stylirostris, a species which was introduced in the 80s. The major difficulty to which the industry has been faced for 10 years is the occurrence of the “Syndrome 93”, which corresponds to mortality phases when the temperature falls down in April-May-June. This mortality is associated to the pathogenic bacteria Vibrio penaecida. An experiment of genetic selection based on the criterion ofsurvival to Syndrome 93 has been conducted at the Laboratory of Aquaculture of New Caledonia. The 3rd selected generation had demonstrated very encouraging results (survival rates improved by around 20% in experimental infections with V. penaeicida). These results have not...
Tipo: Text
Palavras-chave: Amélioration génétique; L. stylirostris; Résistance; Syndrome 93; Genetic improvement; L. stylirostris; Disease resistance; Syndrome 93.
Ano: 2004
URL: http://archimer.ifremer.fr/doc/00204/31527/29943.pdf

Influence of water temperature on the economic value of growth rate in fish farming: The case of sea bass (Dicentrarchus labrax) cage farming in the Mediterranean
Provedor de dados: 5
Autores: Besson, M.; Vandeputte, Marc; Van Arendonk, J. A. M.; Aubin, J.; De Boer, I. J. M.; Quillet, E.; Komen, H.
In sea cage farming, fish are exposed to seasonal variations of water temperature, and these variations can differ from one location to another. A small increase in water temperature does not only stimulate growth of the fish (until an optimal level) but also lowers dissolved oxygen concentration in water. Dissolved oxygen may then become a rearing constraint during the production cycle if the oxygen requirement of fish is higher than the supply. The impact of this constraint on production parameters (stocking density of cages and/or batch rotation) and thus on economic profit of a farm will depend on both local thermal regime and growth potential of the fish. Increased growth is one of the most important traits in a breeding objective to increase...
Tipo: Text
Palavras-chave: Economic values; Bioeconomic model; Fish farming; Genetic improvement; Temperature; Thermal growth coefficient.
Ano: 2016
URL: http://archimer.ifremer.fr/doc/00332/44361/43964.pdf

Estimation of Genetic Parameters of Fatty Acids Composition in Flesh of Market Size Common Carp (Cyprinus carpio L.) and Their Relation to Performance Traits Revealed that Selective Breeding Can Indirectly Affect Flesh Quality
Provedor de dados: 5
Autores: 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

Breeding and Domestication of Eastern Oyster (  Crassostrea virginica  ) Lines for Culture in the Mid-Atlantic, Usa: Line Development and Mass Selection for Disease Resistance
Provedor de dados: 5
Autores: Frank-lawale, Anu; Allen, Standish K.; Degremont, Lionel.
A selective breeding program for Crassostrea virginica was established in 1997 as part of an initiative in Virginia to address declining oyster harvests caused by the two oyster pathogens Haplosporidium nelsoni (MSX) and Perkinsus marinus (Dermo). Housed in the Aquaculture Genetics and Breeding Technology Center (ABC), the objective of the program was to develop and disseminate disease-resistant lines that would enable an oyster culture industry. Today, culture of disease-resistant cultivars accounts formore than 90%of oyster production in the state, where 28.1 million half-shell oysters and 2 billion eyed larvae were sold in 2012. Results of our line development program as of 2006 are reported. Eight ABC lines from 3 genetic groups—East Coast (EC),...
Tipo: Text
Palavras-chave: Crassostrea gigas; Oysters; Selective breeding; Disease resistance; Chesapeake Bay; Growth; Genetic improvement; MSX; Dermo.
Ano: 2014
URL: http://archimer.ifremer.fr/doc/00188/29950/28395.pdf

Amélioration génétique expérimentale de la crevette d'élevage de Nouvelle-Calédonie : Sélection d'une population de L. stylirostris résistante à la bactérie pathogène Vibrio penaeicida. Rapport final pour le Ministère de l'Outre-Mer
Provedor de dados: 5
Autores: Goyard, Emmanuel; Goarant, Cyrille; Bachere, Evelyne; De Lorgeril, Julien; Mugnier, Chantal; Ansquer, Dominique; Broutoi, Francis; Brun, Pierre; Imbert, Frederic; Justou, Carole; Maillez, Jean-rene; Patrois, Jacques; Pham, Dominique; Peignon, Jean-marie.
The New-Caledonian shrimp industry is based on the controlled reproduction of the shrimp Litopenaeus stylirostris, a species which was introduced in the 80s. The major difficulty to which the industry has been faced for 10 years is the occurrence of the "syndrome 93", which corresponds to mortality phases when the temperature falls down in April-May-June. This mortality is associated to the pathogenic bacteria Vibrio penaecida and is expressed at different levels which are variable from year ta year and from pond to pond. No resistance to this pathology has been developed spontaneously. This is likely due to the protocole used to rear spawners, which does not allow to implement an efficient selective pressure at each generation  An experimental selection...
Tipo: Text
Palavras-chave: Amélioration génétique; P. styliroslris; Résistance; Syndrome 93; Lyzozyme; Genetic improvement; P. styliroslris; Résistance; Syndrome 93; Lyzozyme.
Ano: 2003
URL: http://archimer.ifremer.fr/doc/00109/22020/19643.pdf

Cross breeding of different domesticated lines as a simple way for genetic improvement in small aquaculture industries: Heterosis and inbreeding effects on growth and survival rates of the Pacific blue shrimp Penaeus (Litopenaeus) stylirostris
Provedor de dados: 5
Autores: 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

Arachis hoehnei, the probable B genome donor of Arachis hypogaea based on crossability, cytogenetical and molecular studies
Provedor de dados: 30
Autores: Mallikarjuna, N.
Palavras-chave: Genomes; Hybrids; Polyploidy; Cytogenetics; DNA; Groundnuts; Mosses; Genetic polymorphism; Polymorphism; Genetic improvement.
Ano: 2006
URL: http://agropedia.iitk.ac.in/openaccess/?q=node/3177

Response of Selected Sorghum Lines to Soil Salinity-Stress under Field Conditions
Provedor de dados: 30
Autores: Ramesh, S.
Palavras-chave: Soil salinization; Sorghum; Hybrids; Heritability; Phenotypes; Genotypes; Grain; Statistical methods; Genetic improvement; Tolerance.
Ano: 2005
URL: http://agropedia.iitk.ac.in/openaccess/?q=node/3261

Stover fodder quality traits for dual-purpose sorghum genetic improvement
Provedor de dados: 30
Autores: Blümmel, M.
Palavras-chave: Nitrogen; Sorghum; Organic matter; Body weight; Bioreactors; Genetic improvement; Sampling; Aromatic compounds; Forecasting; Metabolism.
Ano: 2006
URL: http://agropedia.iitk.ac.in/openaccess/?q=node/3197

Expected gain in selection of Pinus elliottii var. elliottii for timber production at an early age
Provedor de dados: 190
Autores: 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

Genetic diversity of sweet sorghum germplasm in Mexico using AFLP and SSR markers
Provedor de dados: 86
Autores: 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

Detection and evaluation of selection signatures in sheep
Provedor de dados: 86
Autores: Paim,Tiago do Prado; Ianella,Patrícia; Paiva,Samuel Rezende; Caetano,Alexandre Rodrigues; Pimentel,Concepta Margaret McManus.
Abstract: The recent development of genome-wide single nucleotide polymorphism (SNP) arrays made it possible to carry out several studies with different species. The selection process can increase or reduce allelic (or genic) frequencies at specific loci in the genome, besides dragging neighboring alleles in the chromosome. This way, genomic regions with increased frequencies of specific alleles are formed, caracterizing selection signatures or selective sweeps. The detection of these signatures is important to characterize genetic resources, as well as to identify genes or regions involved in the control and expression of important production and economic traits. Sheep are an important species for theses studies as they are dispersed worldwide and have...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Ovis aries; Analysis software; Animal genetic resources; Genetic improvement; Genomics; Molecular genetics; SNP markers.
Ano: 2018
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-204X2018000500527

Somatic hybridization between Citrus sinensis (L.) Osbeck and C. grandis (L.) Osbeck
Provedor de dados: 86
Autores: Calixto,Marcia Cristina; Mourão Filho,Francisco de Assis Alves; Mendes,Beatriz Madalena Januzzi; Vieira,Maria Lúcia Carneiro.
This work had as objective to produce citrus somatic hybrids between sweet oranges and pummelos. After chemical fusion of sweet orange embryogenic protoplasts with pummelo mesophyll-derived protoplasts, plants were regenerated by somatic embryogenesis and acclimatized in a greenhouse. The hybrids of 'Hamlin' sweet orange + 'Indian Red' pummelo and 'Hamlin' sweet orange + 'Singapura' pummelo were confirmed by leaf morphology, chromosome counting and molecular analysis. These hybrids have potential to be used directly as rootstocks aiming blight, citrus tristeza virus, and Phytophthora-induced disease tolerance, as well as for rootstocks improvement programs.
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Genetic improvement; Protoplast fusion; Rootstock.
Ano: 2004
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-204X2004000700015

Obtaining new germplasm in Cenchrus ciliaris L. through induced-mutation and in vitro selection
Provedor de dados: 85
Autores: López Colomba,E; Prina,A; Griffa,S; Ribotta,AN; Carloni,E; Tommasino,E; Luna,C; Biderbost,E; Grunberg,K.
Cenchrus ciliaris L., a forage grass of wide distribution in the north-west of Argentina, is a tetraploid (4x = 36) and obligate apomictic species. One way of obtaining novel germplasm is by induced mutations. In this work, physical and chemical mutations are combined with in vitro selection procedures seeking for new germplasm, with emphasis on salinity and drought tolerance. Mature seeds of Cenchrus ciliaris L. cv Biloela were subjected to treatments with X rays (400 Gy) and ethyl methanesulphonate (EMS) water solution (5.5 mM for 24 h). To perform in vitro selection, after 7 days of EMS or X rays treatments, germinated seeds were transferred to tubes containing Murashige and Skoog medium supplemented with NaCl or mannitol to simulate salinity and...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Cenchrus ciliaris; Genetic improvement; Induced mutations; In vitro selection; RAPDs analysis.
Ano: 2011
URL: http://www.scielo.org.ar/scielo.php?script=sci_arttext&pid=S1851-56572011000100009

An efficient protocol for culturing meristems of sorghum hybrids
Provedor de dados: 85
Autores: Sadia¹,B; Josekutty,PC; Potlakayala,SD; Patel,P; Goldman,S; Rudrabhatla,SV.
A robust protocol for culturing meristems of Sorghum is required to assist with rapid genetic improvement of the genus. Through meristem culture, an efficient method for rapid micropropagation was developed for Sorghum bicolor (L.) Moench. hybrids, namely NC+262, NC+6C21 and NC+6B50. Complete plants were regenerated directly from shoot meristems without an intervening callus phase. Regeneration frequencies varied between the studied genotypes and according to the growth regulator combinations present in the medium. The combination of BAP and TDZ showed a synergistic effect on shoot multiplication. The highest number of shoots per meristem (68 ± 2) was recorded for the genotype NC+262, followed by NC+6C21 (31.3 ± 0.8), and NC+6B50 (16 ± 1.7). MS medium...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Micropropagation; Sorghum bicolor; Tissue culture; Genetic improvement; Genotypes.
Ano: 2010
URL: http://www.scielo.org.ar/scielo.php?script=sci_arttext&pid=S1851-56572010000200010

Avaliação dos Impactos Econômicos, Sociais e Ambientais da Poedeira Colonial Embrapa 051
Provedor de dados: 31
Autores: Miele,   Marcelo; Girotto,   Ademir Francisco; Palhares,   Julio Cesar Pascale; Pereira de Figueiredo,   Elsio Antonio; Saatkamp,   Marcio Gilberto.
The limited resources for agricultural research and the need for a better knowledge about the ways that technologies change agribusiness competitiveness and its social and natural environment, demand its impacts assessment. The aim of this study was to realize economic, environmental, social and organizational impact assessment of the laying hen Embrapa 051, developed by the Brazilian Agricultural Research Company. This project started on 2000.
Tipo: Conference Paper or Presentation
Palavras-chave: Economic impact; Environmental impact; Genetic improvement; Laying hen; Social impact; Agribusiness; Research and Development/Tech Change/Emerging Technologies.
Ano: 2008
URL: http://purl.umn.edu/96280

THE EFFECTS OF THE U.S. PLANT VARIETY PROTECTION ACT ON WHEAT GENETIC IMPROVEMENT
Provedor de dados: 31
Autores: Alston,   Julian M.; Venner,   Raymond J.
The U.S. Plant Variety Protection Act (PVPA) of 1970 was meant to strengthen intellectual property protection for plant breeders. A model of investment under partial excludability is developed, leading to the hypotheses that any increase in excludability or appropriability of the returns to invention, attributable to the PVPA, would lead to increases in investment or efficiency gains in varietal R&amp;D, improved varietal quality, and enhanced royalties. These hypotheses are tested in an economic analysis of the effects of the PVPA on wheat genetic improvement. The PVPA appears to have contributed to increases in public expenditures on wheat variety improvement, but private-sector investment in wheat breeding does not appear to have increased. Moreover,...
Tipo: Working or Discussion Paper
Palavras-chave: Intellectual property rights; Wheat; Genetic improvement; Research and Development/Tech Change/Emerging Technologies.
Ano: 2000
URL: http://purl.umn.edu/16059

Pendulous Crop in Broilers
Provedor de dados: 89
Autores: Ebling,PD; Pontalti,GC; Villanueva,AP; Ribeiro,AML.
ABSTRACTPendulous crop is a physiological disorder, which etiology is still unknown and it is characterized by abnormal dilation of the crop of poultry. This article aims at reporting a case of high incidence of pendulous crop in male and female broilers Cobb 500, as well as to discuss its possible causes and consequences. In an experiment with broilers performed at the experimental facilities of Laboratório de Ensino Zootécnico of UFRGS, a high incidence (9.5%) of pendulous crop was observed. Genetic predisposition is the most frequently documented and accepted cause of that condition. Despite presenting the same live weight as normal broilers, birds with pendulous crop had lower carcass weight due to dehydration and malnourishment, and should be culled...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Metabolic disorders; Genetic improvement; Feed intake voracity.
Ano: 2015
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2015000300395

Performance and carcass characteristics of broiler chickens with different growth potential and submitted to heat stress
Provedor de dados: 89
Autores: Rosa,PS; Faria Filho,DE; Dahlke,F; Vieira,BS; Macari,M; Furlan,RL.
In order to evaluate the effects of broiler genotype and of heat exposure on performance, carcass characteristics, and protein and fat accretion, six hundred one-day-old male broilers were randomly assigned in a 2 x 3 factorial arrangement, according to the following factors: genetic group (selected and non-selected broilers) and pair-feeding scheme (Ad32 - reared under heat stress and fed ad libitum; Ad23 - reared at thermoneutrality and fed ad libitum; Pf23 - reared at thermoneutrality and pair fed with Ad32), with a total of six treatments with four replicates of 25 birds each. Independent of pair-feeding scheme, selected broilers showed better feed conversion, higher carcass yield, and lower abdominal fat deposition rate. However, as compared to...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Allometric coefficient; Carcass yield; Genetic improvement; Heat stress.
Ano: 2007
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2007000300007

Tolerance of peanut (Arachis hypogea) genotypes to salt stress in the initial phase
Provedor de dados: 91
Autores: Sá,Francisco V. da S.; Santos,Manoel G. dos; Barros Júnior,Aurélio P.; Albuquerque,José R. T. de; Souza,Almir R. E. de; Ribeiro,Rayanne M. P.
ABSTRACT This study aimed to evaluate the emergence, growth, biomass accumulation and tolerance of peanut genotypes under salt stress. The experiment was conducted in a protected environment (greenhouse), evaluating six peanut genotypes (Tatuí, L7151, Caiapó, IAC8112, IAC881 and Havana), which were subjected to two levels of irrigation water salinity (0.5 [control] and 3.5 dS m-1), arranged in a 6 x 2 factorial scheme, in a randomized block design, with five repetitions, with two plants per plot. Plants were cultivated for 30 days after sowing in lysimeters with capacity for 0.5 dm3, filled with a mixture of non-saline, non-sodic soil and commercial substrate in 1:1 proportion on volume basis. During this period, plants were evaluated for emergence,...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Irrigation; Salinity; Genetic improvement.
Ano: 2020
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-43662020000100037

RAPD markers utilization and other parameters in the determination of mango hybrids genitors
Provedor de dados: 94
Autores: Cordeiro,Maria Cristina Rocha; Pinto,Alberto Carlos de Queiróz; Ramos,Víctor Hugo Vargas; Faleiro,Fábio Gelape; Fraga,Lilia Marta Santos.
Actually mango (Mangifera indica, L.) is considered one of the largest Brazilian fruitbusiness for the export market. Cultivar selection having high fruit quality is a fundamental step to obtain excellent results in this business. A mango breeding program based on intervarietal hybridization may produce new improved cultivars for mango growers. Mango hybrids have been obtained by controlled or open crosses. In the last one, it is important to identify the male parent because it is useful for the genetic cultivar history, thus it is important for planning further improvements. This work presents a parentage test using among others parameters RAPD (Random amplified Polymorphic DNA) markers to estimate the male parent of the selected hybrids in an open cross...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Mango tree; Intervarietal crosses; Genetic improvement.
Ano: 2006
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-29452006000200002

Illustrated guide to the classification of banana seeds and embryos
Provedor de dados: 94
Autores: Silva,Manassés dos Santos; Rodrigues,Taise Conceição; Aud,Fabiana Ferraz; Santos-Serejo,Janay Almeida dos; Amorim,Edson Perito.
Abstract  Considering there is no illustrated scale of the principle anomalies observed for banana seeds, the objective of this guide is to cover in detail, for the first time, the categories to classify the most common types of anomalies observed in banana embryos and seeds, as well as in vitro embryo rescue and culture, taking into account the experience acquired by the banana breeding program at Embrapa in Brazil. Four classes to classify the seeds were proposed and with regards to classifying the embryos, eight classes were established.
Tipo: Info:eu-repo/semantics/article
Palavras-chave: In vitro culture; Germination; Genetic improvement; Musa spp; Embryo rescue.
Ano: 2019
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-29452019000210001

Genotype-environment interaction on the density of peach buds cultivated in a humid subtropical climate
Provedor de dados: 94
Autores: Penso,Gener Augusto; Citadin,Idemir; Scariotto,Silvia; Danner,Moeses Andrigo; Sachet,Marcos Robson.
Abstract  Studies on the interaction of genetic and environmental effects on floral morphogenesis in peach trees grown in humid subtropical climate provide important information related to adaptation and for assisting in the selection of new cultivars. This study aimed to verify the genetic and environmental effects and to identify peach tree genotypes with greater shoot length, vegetative bud, flower bud density adaptability and stability under humid subtropical climate conditions. Twelve peach tree genotypes were evaluated over a period of eight years, during the growing season (2006/07 to 2013/14) in Pato Branco-PR, Brazil. Data were collected for shoot length (SL), flower bud density (FBD) and vegetative bud density (VBD), as well as temperature,...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Prunus persica L. Batsch; GGE Biplot; Genetic improvement; Adaptability and stability; Morphogenesis.
Ano: 2018
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-29452018000500801

Genetic diversity of a Paspalum notatum Flügge germplasm collection
Provedor de dados: 96
Autores: 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

Genetic divergence among accessions of Arachis repens based on vegetative morphological traits
Provedor de dados: 96
Autores: 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

Genetic and non-genetic effects on calf vigor at birth and preweaning mortality in Nellore calves
Provedor de dados: 96
Autores: 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

Genetic divergence between genotypes of forage peanut in relation to agronomic and chemical traits
Provedor de dados: 96
Autores: Menezes,Ana Paula Morais; Assis,Giselle Mariano Lessa de; Mataveli,Marcela; Silva,Hellen Sandra Freires da; Azevedo,José Marlo Araújo de; Mendonça,Márcia Silva de.
The objective of this study was to evaluate the genetic divergence of forage peanut in relation to agronomic and chemical traits in both rainy and dry seasons. This experiment was conducted with genotypes from the Forage Peanut Active Germoplasm Bank located in Embrapa Acre. Eighteen genotypes of forage peanut were used: 12 genotypes of A. pintoi, four genotypes of the A. repens species and two interspecific hybrids of A. pintoi × A. repens. The design was of randomized blocks with five replicates. All traits were submitted to analyses of variance and later, study of genetic divergence was done through multivariate analysis techniques, in which the Tocher's optimization method and the nearest neighbor method were used. Dissimilarity measure used in cluster...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Arachis; Genetic improvement; Multivariate analysis; Tocher's optimization.
Ano: 2012
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-35982012000700008

Yield loss in sunflower cultivars due to bird attack
Provedor de dados: 124
Autores: Silva,Paulo Sérgio Lima e; Tomaz,Francisco Linco de Souza; Siqueira,Patrícia Liany de Oliveira Fernandes; Silva,Paulo Igor Barbosa e; Lima,Levi Afonso Cavalcante de.
ABSTRACT Bird attacks on the sunflower may hinder its exploitation in the Brazilian semi-arid region. The aim of this study was to evaluate the effects of different levels of protection (0, 33, 66 and 100%) of the capitula of eight sunflower cultivars, evaluated in randomized blocks with sub-divided plots and four replications. The cultivars were allocated in the plots and the levels of protection in the sub-plots, by covering the capitula with caps of non-woven fabric after physiological maturity. The most frequent bird species was the Paroaria dominicana. The Aguará 06 cultivar was the most productive and most tolerant to bird attack, followed by the Helio 250, CF 101 and Charrua cultivars. There was a positive correlation between yield loss (YL) due to...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Helianthus annuus; Paroaria dominicana; Protection of capitula; Phenotypic correlation; Genetic improvement.
Ano: 2019
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1806-66902019000100114

Selection indices for agronomic traits in segregating populations of soybean
Provedor de dados: 124
Autores: Bizari,Eduardo Henrique; Val,Bruno Henrique Pedroso; Pereira,Elise de Matos; Mauro,Antonio Orlando Di; Unêda-Trevisoli,Sandra Helena.
ABSTRACT In genetic improvement of the soybean crop, the selection process is complex and greatly influenced by the environment. One of the alternatives for facilitating this process is the use of selection indices, making it possible to select desirable genotypes for the early generations of breeding programs. The aim of this study was to compare different selection indices in segregating populations of soybean, indicating methods which are superior in various situations, and proposing economic weightings in order to obtain higher gains. Direct and indirect selection criteria were used, together with the classic Smith-Hazel index, an index based on the sum ranks of Mulamba and Mock, a Williams base index, an index based on the desired gains of Pesek and...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Glycine max; Selection criteria; Genetic improvement.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1806-66902017000100110

Breeding and genetics for improvement of yield and quality of corn
Provedor de dados: 106
14 tables
Palavras-chave: Corn; Maize; Genetic improvement; Plant breeding; Genetics; Yields; Quality; ข้าวโพด; ผลผลิต; คุณภาพ.
Ano: 1971
URL: http://anchan.lib.ku.ac.th/agnet/handle/001/3751

Breeding and genetics for the improvement of yield and quality of corn
Provedor de dados: 106
4 ill., 36 tables
Palavras-chave: Corn; Maize; Genetic improvement; Plant breeding; Genetics; Yields; Quality; ข้าวโพด; การปรับปรุงพันธุกรรม.
Ano: 1971
URL: http://anchan.lib.ku.ac.th/agnet/handle/001/3750

Sorghum breeding
Provedor de dados: 106
Autores: Krisda Samphantharak; Suranee Koonphol.
4 tables
Palavras-chave: Sorghum; Plant breeding; Selection; Variety trials; Growth; Yields; Pest resistance; Disease resistance; Genetic improvement; Hybrid program; Hybridization; Yield trials; ข้าวฟ่าง; อายุเก็บเกี่ยวสั้น; การต้านทานต่อศัตรูพืช; การปรับปรุงประชากร; โครงการพัฒนาลูกผสม; วิธีการคัดเลือก; การทดสอบผลผลิต.
Ano: 1975
URL: http://anchan.lib.ku.ac.th/agnet/handle/001/3819

การตอบสนองทางสรีรวิทยาต่อความเครียดเนื่องจากความร้อนในโคนมที่มีจีโนไทป์ที่แตกต่างกันของยีน HSP70-2
Provedor de dados: 106
Autores: Tatsaporn Siripug; Suporn Katawatin.
HSP70-2 is well accepted as an indicator of heat stress. The purpose of this study was to investigate the physiological responses to heat stress of differential genotypes of HSP70-2 in dairy cattle. Thirty two female Holstein Friesian (HF) crossbred heifers, 2-3 years of age, 266 ± 5.6 kg body weight were placed outdoor with partial roof. Blood samples were collected to do genotyping of HSP70-2 using polymerase chain reaction-restriction fragment length polymorphism (PCR-RFLP) technique. Ambient temperature, relative humidity and physiological responses, including rectal temperature, respiration rate, sweating rate, pulse rate, skin temperature, and N/L ratio were examined at 06.00, 14.00, 18.00 and 22.00. Genotyping revealed that there were 14 and 18...
Tipo: PhysicalObject
Palavras-chave: Dairy cattle; Genotypes; Genetic variation; Hsp70-2; Heat stress; Heat tolerant; Genetic improvement; โคนม; รูปแบบจีโนไทป์; พันธุกรรม; การแสดงออกของยีน; ความแตกต่างทางพันธุกรรม; การตอบสนองทางสรีรวิทยา; ความเครียด; อากาศร้อน; การทนร้อน; การรักษาสมดุลความร้อน; การปรับปรุงพันธุ์.
Ano: 2014
URL: http://anchan.lib.ku.ac.th/agnet/handle/001/5750

Sorghum breeding and genetic improvement
Provedor de dados: 106
4 ill., 9 tables
Palavras-chave: Sorghum; Plant breeding; Genetic improvement; ข้าวฟ่าง; การปรับปรุงพันธุ์.
Ano: 1974
URL: http://anchan.lib.ku.ac.th/agnet/handle/001/3793

การประมาณค่าพารามิเตอร์ทางพันธุกรรมของลักษณะจำนวนลูกเกิดทั้งหมด ลูกตายแรกเกิด มัมมี่ และน้ำหนักครอกแรกเกิดในสุกร
Provedor de dados: 106
Autores: Navarat Sangloon; Monchai Duangjinda; Wuttigrai Boonkum.
The objective of this study was to estimate genetic parameters for total number born (TB), stillbirth (SB), mummy (MUM), and litter birth weight (LBW) in Landrace (LR) and Large White (LW)pigbreeds. Data were collected from swine commercial herd at Pak Chong district, Nakhon Ratchasima Province. A total of 99,250 records during 2004 to 2011 were used to analysis.Genetic parameters and breeding values were estimated by animal model withmultipletrait analysis by BLUPF90-Pig PAK 2.5 software. The results were shown that estimated heritability for all traits were low. Next step to improve these traits, the selection intensity, should be increase selection index and concentrate with raising management during pregnant and farrowing. The genetic correlations...
Tipo: PhysicalObject
Palavras-chave: Swine; Landrace; LR; Large white; LW; Genetic parameter; Genetic improvement; Total number born; Litter birth weight; Stillbirth; Mummy; สุกร; แม่พันธุ์; พันธุ์แลนด์เรซ; พันธุ์ลาร์จไวท์; พันธุกรรม; ค่าพารามิเตอร์ทางพันธุกรรม; ค่าการผสมพันธุ์; การปรับปรุงพันธุ์; จำนวนลูกเกิดทั้งหมด; น้ำหนักครอกแรกเกิด; ลูกตายแรกเกิด; มัมมี่; การคัดเลือกพันธุ์ดี.
Ano: 2014
URL: http://anchan.lib.ku.ac.th/agnet/handle/001/5751

Rank-ordering coefficients of variation for popping expansion - doi: 10.4025/actasciagron.v33i3.11911
Provedor de dados: 1
Autores: Arnhold, Emmanuel; Universidade Federal do Goiás (UFG); Milani, Klayton Flávio; Universidade Estatual de Maringá (UEM).
The coefficient of variation (CV) has been the most important statistic to determine the precision of experimental errors, but an even classification for guiding popcorn breeders is still lacking for popping expansion.  The normality of data from 50 CVs was tested through the Shapiro-Wilk test, and the mean (m), median, standard deviation (SD), maximum and minimum values, asymmetry and kurtosis were all determined using the momentum method. The CVs were ranked as low [CV &amp;le; (m - 1 SD)], moderate [(m - 1 SD) &lt; CV &amp;le; (m + 1 SD)], high [(m + 1 SD) &lt; CV &amp;le; (m + 2 SD)] and very high [CV &gt; (m + 2 SD)]. In summary, these data were close to the normality because the slight and flattened curve was skewed to the right. The CV’s mean was...
Palavras-chave: Zea mays; Dispersion measurement; Genetic improvement; Precision; Accuracy Zea mays; Dispersion measurement; Genetic improvement; Precision; Accuracy.
Ano: 2011
URL: http://periodicos.uem.br/ojs/index.php/ActaSciAgron/article/view/11911

Análise genética de três gerações de tilápia do Nilo (linhagem GIFT) utilizando o marcador RAPD - doi: 10.4025/actascianimsci.v33i2.9202
Provedor de dados: 2
Autores: Oliveira, Sheila Nogueira; Universidade Estadual de Maringa; Ribeiro, Ricardo Pereira; Universidade Estadual de Maringa; Lopera, Nelson Mauricio; Universidade Estadual de Maringa; Candioto, Fernanda Braz; Universidade Estadual de Maringa; Resende, Emiko Kawakami; EMBRAPA; Legat, Angela Puchinik; EMBRAPA.
O objetivo deste trabalho foi analisar a diversidade genética de três gerações da tilápia GIFT do Programa de Melhoramento Genético da Universidade Estadual de Maringá, utilizando o marcador RAPD. Foram utilizadas 180 amostras de nadadeira. Os sete primers utilizados produziram 91 fragmentos, dos quais 98,9% foram polimórficos. Observaram-se diferenças (p &lt; 0,05) na frequência de 64 fragmentos, dos quais dez foram excluídos na G2. Os resultados de variabilidade genética estimados pelo índice de Shannon (G0: 0,430; G1: 0,469 e G2: 0,420) e pela porcentagem de fragmentos polimórficos (G0: 90,1%; G1: 94,5% e G2: 86,8%) indicaram alta variabilidade genética intrapopulacional. Resultados esses que corroborando com os preceitos de diversidade genética de Nei...
Tipo: Analise laboratorial
Palavras-chave: Produção Animal diversidade genética; Genetic Improvement of Farmed Tilapias; Linhagens; Melhoramento genético; Oreochromis niloticus Piscicultura genetic diversity; Genetic Improvement of Farmed Tilapias; Strains; Genetic improvement; Oreochromis niloticus.
Ano: 2011
URL: http://periodicos.uem.br/ojs/index.php/ActaSciAnimSci/article/view/9202

Seleção de bacillus spp. para produção de esterases e melhoramento de bacillus cereus (c124)
Provedor de dados: 52
Autores: Mendonça,Analucia Longman; Mariano,Rosa de Lima Ramos; Araújo,Janete Magali de; Cavalcante,Uided Maaze T.
Forty-four Bacillus spp. strains obtained from sugar cane derivates and residues, six of them isolated in this work, were tested using Tween 80 as substrate (agar-Tween 80 medium), in order to determine their esterase activity through the enzymatic index averages. After statistic analysis, B. cereus (C124) strain, which presented better results, was submitted to genetic improvement by treatment with ultraviolet light (UV). The survival curve pointed out 28" as the time necessary to obtain 30% of survivors. Fifty survivors and the wild strain C124 were compared in relation to their esterase activity as mentioned previously. The wild strain and the mutant C124UV35, which showed enzymatic index average higher than C124, were characterized in polyacrilamide...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Bacteria; Genetic improvement; Bacillus spp.; B. cereus; Esterase.
Ano: 1998
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89131998000100011

Bayesian Analysis of the Genetic Control of Survival in F3 Families of Common Bean
Provedor de dados: 117
Autores: Mora,Freddy; Gonçalves-Vidigal,Maria C; Santos,Alexandra I.
The objectives of this study were to examine the genetic control of survival in segregant families F3 of the common bean (Phaseolus vulgaris L.) in southern Brazil during the 2004-2005 growing season, to identify useful genotypes for the breeding program of this crop, and to determine the genetic association between survival and weight of 100 seeds (production trait; P100). A Bayesian approach was used to predict breeding values and to estimate variance components. Survival was recorded as a binary response: dead plant or live plant during harvest. The total population consisted of 11,520 individual plants. The difference in the magnitude between the best and the worst families was as high as 22%, and varied from 57 to 73%. Survival was found to be highly...
Tipo: Journal article
Palavras-chave: Genetic improvement; Breeding; Gibbs algorithm; Heritability.
Ano: 2008
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-58392008000400003

Genetic Progress in Winter Wheat Cultivars released in Chile from 1920 to 2000
Provedor de dados: 117
Autores: Matus,Iván; Mellado,Mario; Pinares,Marcos; Madariaga,Ricardo; del Pozo,Alejandro.
Wheat (Triticum aestivum L.) is the major crop in terms of planted area and presents the largest distribution in the country covering a wide range of climatic regions. This study assesses the changes of various agronomic traits of winter wheat cultivars released in Chile between 1920 and 2000. A total of 117 winter accessions, representing 45 old and 72 modern cultivars were tested in a humid Mediterranean-type climate, with irrigation, in 2003. Old cultivars were those released before 1960 and modern ones were those released after 1960. Principal component (PC) analysis using 10 agronomic traits clearly separate modern from old cultivars of winter wheat. Comparing modern cultivars with old ones, plant height have been reduced by 25.6%, but others traits...
Tipo: Journal article
Palavras-chave: Genetic improvement; Grain quality; Mediterranean environment; Old and new cultivars; Principal components; Yield progress.
Ano: 2012
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-58392012000300001

Analysis of the adaptability of black bean cultivars by means of quantile regression
Provedor de dados: 65
Autores: Barroso,Laís Mayara Azevedo; Nascimento,Moysés; Barili,Leiri Daiane; Nascimento,Ana Carolina Campana; Vale,Naine Martins do; Silva,Fabyano Fonseca e; Carneiro,José Eustáquio de Souza.
ABSTRACT:  The aim of this study was to use quantile regression (QR) to characterize the effect of the adaptability parameter throughout the distribution of the productivity variable on black bean cultivars launched by different national research institutes (research centers) over the last 50 years. For this purpose, 40 cultivars developed by Brazilian genetic improvement programs between 1959 and 2013 were used. Initially, QR models were adjusted considering three quantiles (τ = 0.2, 0.5 and 0.8). Subsequently, with the confidence intervals, quantile models τ = 0.2 and 0.8 (QR0.2 and QR0.8) showed differences regarding the parameter of adaptability and average productivity. Finally, by grouping the cultivars into one of the two groups defined from QR0.2...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Gene-environment (GxE) interaction; Phaseolus vulgaris L; Genetic improvement; Quantiles; Regression models.
Ano: 2019
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782019000300200

In vivo fertilization of banana
Provedor de dados: 65
Autores: Soares,Taliane Leila; Souza,Everton Hilo de; Costa,Maria Angélica Pereira de Carvalho; Silva,Sebastião de Oliveira e; Serejo,Janay Almeida dos Santos.
The aim of this research was to study the in vivo fertilization process of banana cultivars. The diploid hybrid (AA) 091087-01 was the male progenitor. Flower samples were checked for fertilization from the first to the twentieth day after pollination. The size of the diploid ovules increased gradually at the beginning of the seed formation process. On the other hand, in the AAA triploids (Cavendish subgroup), the not fertilized ovules were aborted. In the AAB triploids (Prata subgroup) some ovules were fertilized. The flowers of Grand Naine, Nanicão and 'Pacovan' cultivars presented necrosis in the distal part of the ovary on the first day after pollination. Necrosis can hinder pollen tube growth towards the ovule, which might be related to the low seed...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Musa spp. L.; Genetic improvement; Hybridization; Ovules.
Ano: 2014
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782014000100007

Genetic parameters in agronomic characters for selection of superior lineages of Ricinus communis L
Provedor de dados: 65
Autores: Santos,Laurenice Araujo dos; Silva,Simone Alves; Souza,Deoclides Ricardo de; Araujo,Gilmara de Melo; Almeida,Vanessa de Oliveira; Neves,Cláudia Garcia.
ABSTRACT: Knowledge on the variability and heritability of agronomic characters of interest aid the selection of superior materials. Thus, the objective of this study was to evaluate the genetic parameters of agronomic traits in castor bean plant lineages and to quantify the genetic correlations between them. The study was performed in the experimental area of the Federal University of the Recôncavo da Bahia, Cruz das Almas, Bahia. Seed oil content, vegetative cycle, plant height, and the number and weight of seeds per plant were evaluated in 47 lineages of castor bean seedlings. The coefficient of genetic variation was higher for weight of seeds per plant, revealing greater variability. The broad-sense heritability of individual plots presented a higher...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Castor bean plant; Genetic correlation; Heritability; Genetic improvement.
Ano: 2019
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782019000100400