Progresso genético de caracteres agronômicos do arroz irrigado em Minas Gerais entre 1998 e 2012
Autor(a) principal: | |
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Data de Publicação: | 2013 |
Tipo de documento: | Dissertação |
Idioma: | por |
Título da fonte: | LOCUS Repositório Institucional da UFV |
Texto Completo: | http://locus.ufv.br/handle/123456789/4615 |
Resumo: | Every year, at trials called as value for cultivation and use (VCU s), new rice lines, which have potential to be recommended for the rice farmers, are inserted and evaluated, joining the remaining ones from the last year. Therefore, it is possible to evaluate the genetic progress of the important characters for the crop. This estimative indicates the effectiveness of the selection and the necessity of using new selection methods and strategy. Thus, the objective was estimating the genetic progress of agronomic characters of the irrigated rice breeding program at the state of Minas Gerais between 1998 and 2012. For this, it were evaluated the characters: productivity of grains (Kg.ha-1), 100-grain weight (g), plant height (cm), days until flowering (days), tillering(notes) andlodging (notes) of 108 rice lines of ACT s conduced at randomized block design, with three to four repetitions, at four different regions of Minas Gerais between the years of 1998 and 2012. Not all the sites were included in all crop years, according to their selective accuracy. To obtain true estimates of the genetic values it was used the technic REML/BLUP. The genotypes were evaluated at the sites in every year and between the years through the deviance analyses. After, it was estimated the environmental and genetic progress. There was a significant effect for genotype effect and of the interaction genotype x site and genotype x year. The genetic progress observed during the period was: 195,91 kg.ha-1; 0,10 g; 1,50 cm; 3,17 day; -0,01 points; and, -0,18 points, for productivity, 100-grain weight, plant height, days until flowering, tillering and lodging, respectively. Even though the results were satisfactory, new strategies should be employed, such as increase the genetic base of the program, increase of the repetition number, latice design, use of selection indexes, increase of the substitution rate and reduction of the maintaining rate of the rice lines of the program. |
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Reis, Gabriel Gonçalves doshttp://lattes.cnpq.br/8560258263255375Soares, Plínio Cesarhttp://buscatextual.cnpq.br/buscatextual/visualizacv.do?id=K4782732J2Souza, Moacil Alves dehttp://buscatextual.cnpq.br/buscatextual/visualizacv.do?id=K4780557T1Fritsche Neto, Robertohttp://lattes.cnpq.br/5830481480328910Carneiro, Pedro Crescêncio Souzahttp://buscatextual.cnpq.br/buscatextual/visualizacv.do?id=K4728227T62015-03-26T13:40:00Z2013-12-122015-03-26T13:40:00Z2013-07-05REIS, Gabriel Gonçalves dos. Genetic progress of agronomic traits of irrigated rice in Minas Gerais between 1998 and 2012. 2013. 60 f. Dissertação (Mestrado em Plantas daninhas, Alelopatia, Herbicidas e Resíduos; Fisiologia de culturas; Manejo pós-colheita de) - Universidade Federal de Viçosa, Viçosa, 2013.http://locus.ufv.br/handle/123456789/4615Every year, at trials called as value for cultivation and use (VCU s), new rice lines, which have potential to be recommended for the rice farmers, are inserted and evaluated, joining the remaining ones from the last year. Therefore, it is possible to evaluate the genetic progress of the important characters for the crop. This estimative indicates the effectiveness of the selection and the necessity of using new selection methods and strategy. Thus, the objective was estimating the genetic progress of agronomic characters of the irrigated rice breeding program at the state of Minas Gerais between 1998 and 2012. For this, it were evaluated the characters: productivity of grains (Kg.ha-1), 100-grain weight (g), plant height (cm), days until flowering (days), tillering(notes) andlodging (notes) of 108 rice lines of ACT s conduced at randomized block design, with three to four repetitions, at four different regions of Minas Gerais between the years of 1998 and 2012. Not all the sites were included in all crop years, according to their selective accuracy. To obtain true estimates of the genetic values it was used the technic REML/BLUP. The genotypes were evaluated at the sites in every year and between the years through the deviance analyses. After, it was estimated the environmental and genetic progress. There was a significant effect for genotype effect and of the interaction genotype x site and genotype x year. The genetic progress observed during the period was: 195,91 kg.ha-1; 0,10 g; 1,50 cm; 3,17 day; -0,01 points; and, -0,18 points, for productivity, 100-grain weight, plant height, days until flowering, tillering and lodging, respectively. Even though the results were satisfactory, new strategies should be employed, such as increase the genetic base of the program, increase of the repetition number, latice design, use of selection indexes, increase of the substitution rate and reduction of the maintaining rate of the rice lines of the program.A cada ano, nos ensaios de valor de cultivo e uso (VCU s), são inseridas e avaliadas novas linhagens com potencial para serem recomendadas aos orizicultores, juntando-se àquelas remanescentes do ano anterior. Desta forma, é possível avaliar o progresso genético dos caracteres importantes para a cultura. Esta estimativa indica a eficácia da seleção e a necessidade do emprego de novos métodos e estratégias de seleção. Diante disso, o objetivo foi estimar o progresso genético de caracteres agronômicos no programa de melhoramento de arroz irrigado do estado de Minas Gerais entre 1998 e 2012. Para isso, foram avaliados os caracteres: produtividade de grãos (Kg.ha-1), peso de 100 grãos (g), altura de plantas (cm), dias para floração (dias), perfilhamento (nota) e acamamento (nota) de 108 linhagens dos ECA s conduzidos em delineamento de blocos casualizados, com três a quatro repetições, em quatro regiões de Minas Gerais entre os anos de 1998 e 2012. Nem todos os locais foram contemplados em todos os anos agrícolas, de acordo com a acurácia seletiva nos mesmos. Para a obtenção de estimativas fiéis dos valores genéticos foi utilizada a técnica REML/BLUP. Os genótipos foram avaliados nos locais dentro de cada ano e entre os anos pela análise de deviance. Posteriormente, foi estimado o progresso genético e ambiental. Houve efeito significativo para efeito de genótipos e das interações genótipos x locais e genótipos x anos. O progresso genético observado no período foi de foi de 195,91 kg.ha-1; 0,10 g; 1,50 cm; 3,17 dias; 0,01 pontos; e, -0,18 pontos para: produtividade de grãos, peso de 100 grãos, altura de plantas, dias para floração, acamamento e perfilhamento, respectivamente. Apesar de satisfatórios, novas estratégias devem ser empregadas, como: aumento da base genética do programa, aumento no número de repetições, delineamento em látice, utilização de índices de seleção, elevação da taxa de substituição e redução da taxa de manutenção das linhagens do programa.Coordenação de Aperfeiçoamento de Pessoal de Nível Superiorapplication/pdfporUniversidade Federal de ViçosaMestrado em FitotecniaUFVBRPlantas daninhas, Alelopatia, Herbicidas e Resíduos; Fisiologia de culturas; Manejo pós-colheita deValor de cultivo e usoREML/BLUPEstratégias de melhoramentoValue for cultivation and useREML/BLUPStrategies for improvementCNPQ::CIENCIAS AGRARIAS::AGRONOMIA::FITOTECNIAProgresso genético de caracteres agronômicos do arroz irrigado em Minas Gerais entre 1998 e 2012Genetic progress of agronomic traits of irrigated rice in Minas Gerais between 1998 and 2012info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/masterThesisinfo:eu-repo/semantics/openAccessreponame:LOCUS Repositório Institucional da UFVinstname:Universidade Federal de Viçosa (UFV)instacron:UFVORIGINALtexto completo.pdfapplication/pdf1030707https://locus.ufv.br//bitstream/123456789/4615/1/texto%20completo.pdf38a98872217f0816409997c5432b9b0fMD51TEXTtexto completo.pdf.txttexto completo.pdf.txtExtracted texttext/plain105118https://locus.ufv.br//bitstream/123456789/4615/2/texto%20completo.pdf.txtd5f32c830d2bbde0fddfd76c2799d7bbMD52THUMBNAILtexto completo.pdf.jpgtexto completo.pdf.jpgIM Thumbnailimage/jpeg3465https://locus.ufv.br//bitstream/123456789/4615/3/texto%20completo.pdf.jpge555d4156210987badd524c54e53c546MD53123456789/46152016-04-10 23:11:10.579oai:locus.ufv.br:123456789/4615Repositório InstitucionalPUBhttps://www.locus.ufv.br/oai/requestfabiojreis@ufv.bropendoar:21452016-04-11T02:11:10LOCUS Repositório Institucional da UFV - Universidade Federal de Viçosa (UFV)false |
dc.title.por.fl_str_mv |
Progresso genético de caracteres agronômicos do arroz irrigado em Minas Gerais entre 1998 e 2012 |
dc.title.alternative.eng.fl_str_mv |
Genetic progress of agronomic traits of irrigated rice in Minas Gerais between 1998 and 2012 |
title |
Progresso genético de caracteres agronômicos do arroz irrigado em Minas Gerais entre 1998 e 2012 |
spellingShingle |
Progresso genético de caracteres agronômicos do arroz irrigado em Minas Gerais entre 1998 e 2012 Reis, Gabriel Gonçalves dos Valor de cultivo e uso REML/BLUP Estratégias de melhoramento Value for cultivation and use REML/BLUP Strategies for improvement CNPQ::CIENCIAS AGRARIAS::AGRONOMIA::FITOTECNIA |
title_short |
Progresso genético de caracteres agronômicos do arroz irrigado em Minas Gerais entre 1998 e 2012 |
title_full |
Progresso genético de caracteres agronômicos do arroz irrigado em Minas Gerais entre 1998 e 2012 |
title_fullStr |
Progresso genético de caracteres agronômicos do arroz irrigado em Minas Gerais entre 1998 e 2012 |
title_full_unstemmed |
Progresso genético de caracteres agronômicos do arroz irrigado em Minas Gerais entre 1998 e 2012 |
title_sort |
Progresso genético de caracteres agronômicos do arroz irrigado em Minas Gerais entre 1998 e 2012 |
author |
Reis, Gabriel Gonçalves dos |
author_facet |
Reis, Gabriel Gonçalves dos |
author_role |
author |
dc.contributor.authorLattes.por.fl_str_mv |
http://lattes.cnpq.br/8560258263255375 |
dc.contributor.author.fl_str_mv |
Reis, Gabriel Gonçalves dos |
dc.contributor.advisor-co1.fl_str_mv |
Soares, Plínio Cesar |
dc.contributor.advisor-co1Lattes.fl_str_mv |
http://buscatextual.cnpq.br/buscatextual/visualizacv.do?id=K4782732J2 |
dc.contributor.advisor-co2.fl_str_mv |
Souza, Moacil Alves de |
dc.contributor.advisor-co2Lattes.fl_str_mv |
http://buscatextual.cnpq.br/buscatextual/visualizacv.do?id=K4780557T1 |
dc.contributor.advisor1.fl_str_mv |
Fritsche Neto, Roberto |
dc.contributor.advisor1Lattes.fl_str_mv |
http://lattes.cnpq.br/5830481480328910 |
dc.contributor.referee1.fl_str_mv |
Carneiro, Pedro Crescêncio Souza |
dc.contributor.referee1Lattes.fl_str_mv |
http://buscatextual.cnpq.br/buscatextual/visualizacv.do?id=K4728227T6 |
contributor_str_mv |
Soares, Plínio Cesar Souza, Moacil Alves de Fritsche Neto, Roberto Carneiro, Pedro Crescêncio Souza |
dc.subject.por.fl_str_mv |
Valor de cultivo e uso REML/BLUP Estratégias de melhoramento |
topic |
Valor de cultivo e uso REML/BLUP Estratégias de melhoramento Value for cultivation and use REML/BLUP Strategies for improvement CNPQ::CIENCIAS AGRARIAS::AGRONOMIA::FITOTECNIA |
dc.subject.eng.fl_str_mv |
Value for cultivation and use REML/BLUP Strategies for improvement |
dc.subject.cnpq.fl_str_mv |
CNPQ::CIENCIAS AGRARIAS::AGRONOMIA::FITOTECNIA |
description |
Every year, at trials called as value for cultivation and use (VCU s), new rice lines, which have potential to be recommended for the rice farmers, are inserted and evaluated, joining the remaining ones from the last year. Therefore, it is possible to evaluate the genetic progress of the important characters for the crop. This estimative indicates the effectiveness of the selection and the necessity of using new selection methods and strategy. Thus, the objective was estimating the genetic progress of agronomic characters of the irrigated rice breeding program at the state of Minas Gerais between 1998 and 2012. For this, it were evaluated the characters: productivity of grains (Kg.ha-1), 100-grain weight (g), plant height (cm), days until flowering (days), tillering(notes) andlodging (notes) of 108 rice lines of ACT s conduced at randomized block design, with three to four repetitions, at four different regions of Minas Gerais between the years of 1998 and 2012. Not all the sites were included in all crop years, according to their selective accuracy. To obtain true estimates of the genetic values it was used the technic REML/BLUP. The genotypes were evaluated at the sites in every year and between the years through the deviance analyses. After, it was estimated the environmental and genetic progress. There was a significant effect for genotype effect and of the interaction genotype x site and genotype x year. The genetic progress observed during the period was: 195,91 kg.ha-1; 0,10 g; 1,50 cm; 3,17 day; -0,01 points; and, -0,18 points, for productivity, 100-grain weight, plant height, days until flowering, tillering and lodging, respectively. Even though the results were satisfactory, new strategies should be employed, such as increase the genetic base of the program, increase of the repetition number, latice design, use of selection indexes, increase of the substitution rate and reduction of the maintaining rate of the rice lines of the program. |
publishDate |
2013 |
dc.date.available.fl_str_mv |
2013-12-12 2015-03-26T13:40:00Z |
dc.date.issued.fl_str_mv |
2013-07-05 |
dc.date.accessioned.fl_str_mv |
2015-03-26T13:40:00Z |
dc.type.status.fl_str_mv |
info:eu-repo/semantics/publishedVersion |
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/masterThesis |
format |
masterThesis |
status_str |
publishedVersion |
dc.identifier.citation.fl_str_mv |
REIS, Gabriel Gonçalves dos. Genetic progress of agronomic traits of irrigated rice in Minas Gerais between 1998 and 2012. 2013. 60 f. Dissertação (Mestrado em Plantas daninhas, Alelopatia, Herbicidas e Resíduos; Fisiologia de culturas; Manejo pós-colheita de) - Universidade Federal de Viçosa, Viçosa, 2013. |
dc.identifier.uri.fl_str_mv |
http://locus.ufv.br/handle/123456789/4615 |
identifier_str_mv |
REIS, Gabriel Gonçalves dos. Genetic progress of agronomic traits of irrigated rice in Minas Gerais between 1998 and 2012. 2013. 60 f. Dissertação (Mestrado em Plantas daninhas, Alelopatia, Herbicidas e Resíduos; Fisiologia de culturas; Manejo pós-colheita de) - Universidade Federal de Viçosa, Viçosa, 2013. |
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http://locus.ufv.br/handle/123456789/4615 |
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por |
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Universidade Federal de Viçosa |
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Mestrado em Fitotecnia |
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UFV |
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BR |
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Plantas daninhas, Alelopatia, Herbicidas e Resíduos; Fisiologia de culturas; Manejo pós-colheita de |
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Universidade Federal de Viçosa |
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