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| Registros recuperados: 64 | |
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| Andrade Júnior,Valter C; Pedrosa,Carlos E; Miranda,Thalita G; Valadares,Nermy R; Pereira,Samuel L; Azevedo,Alcinei M. |
| ABSTRACT In this study, we aimed to evaluate pepper lines and hybrids (Capsicum chinense and C. annuum) in order to obtain information on agronomic performance, heterosis, heterobeltiosis, phenotypic correlations and genetic dissimilarity. We evaluated lines PIM-030, BGH-433, BGH-4285, Numex Sweet, Numex Garnet and simple hybrids Numex Sweet x PIM-030, Numex Garnet x PIM-030 and BGH-4285 x BGH-433. The research was conducted with eight treatments and four replications in a greenhouse, at campus JK of UFVJM. Twenty two agronomic traits were evaluated. The hybrid BGH-4285 x BGH-433 presents higher heterosis and heterobeltiosis for total fruit productivity and productivity of total fruit dry mass, information of great value for future breeding studies. The... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Capsicum spp; Breeding; Heterosis; Canonic variables; Mahalanobis distance. |
| Ano: 2018 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-05362018000300357 |
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| LEDO, A. da S.; LEDO, F. J. da S.; SILVA, S. de O. e.. |
| Este trabalho objetivou avaliar o comportamento de nove genótipos de bananeira: JV 03-15, PA 03-22, PA 12-03-porte médio; Mysore, Thap Maeo, Pelipita, Nam, Yangambi km 5, e Nam-porte alto, durante o 1º, 2º e 3º ciclos de produção, nas condições edafocliomáticas de Rio Branco-AC. Observou-se que a cv. Pelipita obteve o maior desenvolvimento vegetativo em altura e circunferência do pseudocaule, seguida da Thap Maeo, Mysore e Pacovan. Quanto ao número de folhas vivas por ocasião da colheita, as cultivares Mysore, e Thap Maeo apresentaram maior vigor. A cv. Pacovan, por ocasião do 2º ciclo, não apresentava nenhuma folha, em função da alta incidência de sigatoka-amarela, o que comprometeu, significativamente, o peso dos cachos. No 1º ciclo de produção, a Thap... |
| Tipo: Séries anteriores (INFOTECA-E) |
Palavras-chave: Rio Branco (AC); Acre; Amazônia Ocidental; Western Amazon; Amazonia Occidental; Aclimatación; Bananos; Factores ambientales; Fitomejoramiento.; Melhoramento genético vegetal; Banana; Musa sp; Variedade resistente; Vigor híbrido; Aclimatação; Condição ambiental; Características Agronômicas; Plátano.; Plant breeding; Bananas; Agronomic traits; Heterosis; Acclimation; Environmental factors.. |
| Ano: 1997 |
URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/492502 |
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| THOMAZINI, M. J.; OLIVEIRA, T. K. de; ALBUQUERQUE, E. S. de; LESSA, L. S.; CAVALCANTE, M. de J. B.. |
| O Estado do Acre apresenta características propícias ao desenvolvimento da cultura dos citros. Porém, o curto período de oferta de frutos, mudas de baixa qualidade, indefinição de cultivares adaptadas, problemas fitossanitários e a falta de informações técnicas tornam-se fatores limitantes à ampliação do parque produtivo. Este trabalho teve como objetivos identificar as principais pragas, seus inimigos naturais e as doenças mais importantes da cultura dos citros em quatro municípios do Acre e avaliar aspectos vegetativos e produtivos de genótipos locais de citros, bem como o desenvolvimento vegetativo de combinações de cultivares copa e porta-enxerto. A pesquisa foi realizada de junho de 2002 a junho de 2004. Folhas de laranja, tangerina e limão foram... |
| Tipo: Boletim de Pesquisa e Desenvolvimento (INFOTECA-E) |
Palavras-chave: West Indian fruit fly; Embrapa Acre; Rio Branco (AC); Ramal Jarinau; Brasiléia (AC); Ramal Samaúma; Plácido de Castro (AC); Acre; Amazônia Ocidental; Western Amazon; Amazonia Occidental; Citros; Enfermedades y desórdenes de las plantas; Tangerinos.; Portainjertos; Naranjas; Crecimiento de planta; Limones; Laranja; Citrus sinensis; Limão; Citrus limonia; Tangerina; Citrus reticulata; Variedade resistente; Crescimento; Vigor híbrido; Porta enxerto; Doença de planta; Praga de planta; Identificação; Ácaro; Mosca; Campo Experimental; Características Agronômicas.; Citrus; Oranges; Lemons; Tangerines; Agronomic traits; Plant diseases and disorders; Plant growth; Heterosis; Rootstocks; Mites.. |
| Ano: 2005 |
URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/504506 |
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| Salerno,Juan Carlos; Kandus,Mariana; Boggio Ronceros,R.; Sorarrain,O.; González,Cecilia; Almorza,David. |
| The objective of this work is to study the genetic process related to the hybrid vigour (heterosis) and the identification of quantitative trait loci (QTL) in maize. A biometric model was built using the mathematical formalism relating to the discrete absorbent Markov chain in canonical form, in order to analyse the evolution of chromosome segments, with recessive lethal genes linked with grain yield factors through generations. The grain yield obtained from an inbred maize line regulated by a balanced lethal system, and other lines without this system as control, were evaluated during five inbreeding generations. The use of the Markov chain theory for the study of evolution during these generations was a different approach of the classical mathematical... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Maize; Lethal alleles; Heterosis; Markov Chains; QTL. |
| Ano: 2007 |
URL: http://www.scielo.org.ar/scielo.php?script=sci_arttext&pid=S1852-62332007000100003 |
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| Baretta,Diego; Nardino,Maicon; Carvalho,Ivan Ricardo; Pelegrin,Alan Junior de; Ferrari,Mauricio; Oliveira,Victoria Freitas de; Szareski,Vinícius Jardel; Oliveira,Antonio Costa de; Barros,Willian Silva; Souza,Velci Queiróz de; Maia,Luciano Carlos da. |
| Abstract: The objective of this work was to evaluate the performance of intervarietal corn (Zea mays) hybrids with topcross crosses between landrace populations, and to confirm whether genetic dissimilarity between populations is correlated with the heterosis of the intervarietal hybrids in the field. Nine topcross hybrids were evaluated with their tester 'BRS Planalto', and the following landrace populations were used as parents: Argentino Branco, Dente de Ouro, Amarelão, Criolão, Caiano Rajado, Branco Oito Carreiras, Branco Roxo Índio, Cateto Branco, and Argentino Amarelo. The tester 'BRS Planalto' and the topcross hybrids Branco Oito Carreiras x 'BRS Planalto' and Criolão x 'BRS Planalto' showed higher per se potential for grain yield. The topcross... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Zea mays; Genetic dissimilarity; Heterosis; Landraces; Topcross. |
| Ano: 2019 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-204X2019000102806 |
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| Ribeiro,Virgínia Mara Pereira; Merlo,Fernanda Albuquerque; Gouveia,Gabriela Canabrava; Winkelstroter,Larissa Kretli; Abreu,Luíza Rodrigues Alves; Silva,Marcos Vinícius Gualberto Barbosa da; Panetto,João Cláudio do Carmo; Paiva,Leandro de Carvalho; Cembranelli,Marcello de Aguiar Rodrigues; Toral,Fabio Luiz Buranelo. |
| Abstract: The objective of this work was to determine whether the random regression model using linear splines (RRMLS) is suitable to estimate the genetic parameters for productive and reproductive traits of a multiple-breed dairy cattle population, as well as to investigate the effect of the genetic group of the progeny on the genetic merit of the sire. The multiple-trait model (MTM) and the RRMLS with one knot fitted for every genetic group were used to obtain the genetic parameters. Records of 1/2 Holstein + 1/2 Gyr (1/2HG), 5/8 Holstein + 3/8 Gyr (5/8HG), and 3/4 Holstein + 1/4 Gyr (3/4HG) crossbreed dams were considered. The RRMLS showed better fitting. The additive and residual variances estimated by the MTM and the RRMLS were similar. Heritability... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Gyr; Heritability; Heterosis; Holstein; Selection. |
| Ano: 2017 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-204X2017001101109 |
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| Vacaro,Elton; Barbosa Neto,José Fernandes; Pegoraro,Diego Girardi; Nuss,Claudio Natalino; Conceição,Leo Duc Haa. |
| Genetic progress depends on germplasm quality and breeding methods. Twelve maize populations and their crosses were evaluated to estimate combining ability and potential to be included as source populations in breeding programs. Plant height, point of insertion of the first ear, number of ears per plant, number of grains per ear, root and stalk lodging and grain yield were studied in two locations in Brazil, during the 1997/98 season. Genotype sum of squares was divided into general (GCA) and specific (SCA) combining ability. Results indicated the existence of genetic divergence for all traits analyzed, where additive effects were predominant. The high heterosis levels observed, mainly in Xanxerê, suggested the environmental influence on the manifestation... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Zea mays; Germplasm; Heterosis; Genetic variation. |
| Ano: 2002 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-204X2002000100009 |
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| Gravina,Geraldo de Amaral; Sediyama,Carlos Sigueyuki; Martins Filho,Sebastião; Moreira,Maurílio Alves; Barros,Everaldo Gonçalves de. |
| Seven soybean cultivars (Bossier, Cristalina, Davis, Kent, Lincoln, Paraná and Uberaba), with different levels of resistance to Cercospora sojina, were crossed in a diallel design to determine the general (GCA) and specific (SCA) combining abilities relative to the inheritance of the resistance. Race 04 of the fungus was inoculated in the parents and in the 21 F1 hybrids in a greenhouse in a completely randomized design, with 12 replications. The reactions to the disease were evaluated 20 days after the inoculation, always on the most infected leaflet. Both GCA and SCA were significant for all the evaluated characters, being inferred that, for the expression of the characters, the additive, dominant and, possibly, epistatic genic actions were important.... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Glycine max; Cercospora sojina; Combining ability; Heterosis; Genetic resistance; Genetic parameters. |
| Ano: 2003 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-204X2003000600002 |
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| Registros recuperados: 64 | |
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