GENETIC IMPROYEMENT OF SOYBEANS IN THE RIO GRANDE DO SUL STATE: I. GRAIN YIELD
Autor(a) principal: | |
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Data de Publicação: | 1996 |
Outros Autores: | |
Tipo de documento: | Artigo |
Idioma: | por |
Título da fonte: | Pesquisa Agropecuária Gaúcha (Online) |
Texto Completo: | http://revistapag.agricultura.rs.gov.br/ojs/index.php/revistapag/article/view/606 |
Resumo: | Experimento were carried out at the Seeds Research Center of Júlio de Castilhos (RS) from September of 1993 to May of 1994 to evaluate the progress in grain yield due to the soybean breeding programo in Rio Grande do Sul state, under three environmental conditions related to soil and crop management. The treatments included 21 soybean cultivars from different eras, chosen by their yield potential and their percentage of use by the soybean growers. The resulto show high progress in grain yield for the last 40 years.The genetic gain was 19 kg/ha/year or 1.1% per year, rangin g from 14.7 to 25.3 kg/ . ha annually, within every environment. When the cultivar 'Amarela Comum' was excluded the gain was 11.7 kg/ha/year, for a 30 years period. However, the grain yield gain hes been decreasing along the years probably because the soybean cultivars have reached high productivity levei and also because there has been constant use of the same germplasm bank for hybridization, creating a genetic narrow base. With emergente of new dioceses in the last decade, there were great changes on soybean varieties preferente, changing from varieties derived from Hill and Hood cultivars to genotypes originated from Davis cultivar. The changing was driven by resistancc to brown stem rot (Phialophora gregata). The great difference in grain yield among environments was due to better use of tecnology on soil and crop tillage. |
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GENETIC IMPROYEMENT OF SOYBEANS IN THE RIO GRANDE DO SUL STATE: I. GRAIN YIELD PROGRESSO DO MELHORAMENTO GENÉTICO DA SOJA NO ESTADO DO RIO GRANDE DO SUL: I. RENDIMENTO DE GRÃOSSoybean.Genetic gain.Genotypes.Grain yield.Soja.Melhoramento genético.Cultivar.Rendimento de grão.Experimento were carried out at the Seeds Research Center of Júlio de Castilhos (RS) from September of 1993 to May of 1994 to evaluate the progress in grain yield due to the soybean breeding programo in Rio Grande do Sul state, under three environmental conditions related to soil and crop management. The treatments included 21 soybean cultivars from different eras, chosen by their yield potential and their percentage of use by the soybean growers. The resulto show high progress in grain yield for the last 40 years.The genetic gain was 19 kg/ha/year or 1.1% per year, rangin g from 14.7 to 25.3 kg/ . ha annually, within every environment. When the cultivar 'Amarela Comum' was excluded the gain was 11.7 kg/ha/year, for a 30 years period. However, the grain yield gain hes been decreasing along the years probably because the soybean cultivars have reached high productivity levei and also because there has been constant use of the same germplasm bank for hybridization, creating a genetic narrow base. With emergente of new dioceses in the last decade, there were great changes on soybean varieties preferente, changing from varieties derived from Hill and Hood cultivars to genotypes originated from Davis cultivar. The changing was driven by resistancc to brown stem rot (Phialophora gregata). The great difference in grain yield among environments was due to better use of tecnology on soil and crop tillage. Experimentos foram conduzidos no Centro de Pesquisa de Sementes de Júlio de Castilhos, RS, no período de setembro de 1993 a maio de 1994, com o objetivo de mensurar o progresso em rendimento de grãos, obtido pelo melhoramento genético da soja no Rio Grande do Sul, em três ambientes diferenciados quanto ao manejo do solo e da cultura. Os tratamentos constaram de 21 cultivares de soja, escolhidas pelo alto potencial de rendimento de grãos e pela representatividade em área de cultivo, nos respectivos períodos em que foram utilizadas pelos sojicultores gaúchos. Os resultados evidenciaram que nos últimos 40 anos foi obtido ganho genético de 14,7 a 25,3 kg/ha/ano nos ambientes de menor e maior produtividade, respectivamente, com média de 19 kg/ha/ano ou 1,1% ao ano. Com a exclusão da antiga cultivar 'Amarela Comum', ocorreu ganho de 11,7 kg/ha/ano, no período aproximado de 30 anos. Porém, os ganhos em rendimento de grãos vem diminuindo com o decorrer do tempo, em função do alto potencial de rendimento já alcançado e da constante utilização do mesmo germoplasma básico nas hibridações. Com o surgimento de novas doenças no final da década de 1980, houve grande mudança da preferência varietal, com a substituição de cultivares derivadas de Hill e Hood por genótipos oriundos de Davis, principalmente pela sua resistência à podridão parda da haste (Phialophora regata). A diferença em rendimento de grãos, entre os ambientes, evidenciou também significativo avanço proporcionado pelo uso de melhor tecnologia no manejo do solo e da cultura. Departamento de Diagnóstico e Pesquisa Agropecuária. Secretaria de Agricultura, Pecuária e Desenvolvimento Rural1996-07-09info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionapplication/pdfhttp://revistapag.agricultura.rs.gov.br/ojs/index.php/revistapag/article/view/606Pesquisa Agropecuária Gaúcha; Vol 2 No 2 (1996): PESQ. AGROP. GAÚCHA; 139-147Pesquisa Agropecuária Gaúcha; v. 2 n. 2 (1996): PESQ. AGROP. GAÚCHA; 139-1472595-76860104-9070reponame:Pesquisa Agropecuária Gaúcha (Online)instname:Secretaria de Agricultura, Pecuária e Desenvolvimento Rural do Rio Grande do Sulinstacron:SEAPDRporhttp://revistapag.agricultura.rs.gov.br/ojs/index.php/revistapag/article/view/606/557LIERELOTTO RUBIN, SÉRGIO DE ASSIS SANTOS, OSMAR SOUZA info:eu-repo/semantics/openAccess2021-01-08T19:09:10Zoai:ojs.revistapag.agricultura.rs.gov.br:article/606Revistahttp://revistapag.agricultura.rs.gov.br/ojs/index.php/revistapagPUBhttp://revistapag.agricultura.rs.gov.br/ojs/index.php/revistapag/oaipag@agricultura.rs.gov.br||2595-76860104-9070opendoar:2021-01-08T19:09:10Pesquisa Agropecuária Gaúcha (Online) - Secretaria de Agricultura, Pecuária e Desenvolvimento Rural do Rio Grande do Sulfalse |
dc.title.none.fl_str_mv |
GENETIC IMPROYEMENT OF SOYBEANS IN THE RIO GRANDE DO SUL STATE: I. GRAIN YIELD PROGRESSO DO MELHORAMENTO GENÉTICO DA SOJA NO ESTADO DO RIO GRANDE DO SUL: I. RENDIMENTO DE GRÃOS |
title |
GENETIC IMPROYEMENT OF SOYBEANS IN THE RIO GRANDE DO SUL STATE: I. GRAIN YIELD |
spellingShingle |
GENETIC IMPROYEMENT OF SOYBEANS IN THE RIO GRANDE DO SUL STATE: I. GRAIN YIELD LIERELOTTO RUBIN, SÉRGIO DE ASSIS Soybean. Genetic gain. Genotypes. Grain yield. Soja. Melhoramento genético. Cultivar. Rendimento de grão. |
title_short |
GENETIC IMPROYEMENT OF SOYBEANS IN THE RIO GRANDE DO SUL STATE: I. GRAIN YIELD |
title_full |
GENETIC IMPROYEMENT OF SOYBEANS IN THE RIO GRANDE DO SUL STATE: I. GRAIN YIELD |
title_fullStr |
GENETIC IMPROYEMENT OF SOYBEANS IN THE RIO GRANDE DO SUL STATE: I. GRAIN YIELD |
title_full_unstemmed |
GENETIC IMPROYEMENT OF SOYBEANS IN THE RIO GRANDE DO SUL STATE: I. GRAIN YIELD |
title_sort |
GENETIC IMPROYEMENT OF SOYBEANS IN THE RIO GRANDE DO SUL STATE: I. GRAIN YIELD |
author |
LIERELOTTO RUBIN, SÉRGIO DE ASSIS |
author_facet |
LIERELOTTO RUBIN, SÉRGIO DE ASSIS SANTOS, OSMAR SOUZA |
author_role |
author |
author2 |
SANTOS, OSMAR SOUZA |
author2_role |
author |
dc.contributor.author.fl_str_mv |
LIERELOTTO RUBIN, SÉRGIO DE ASSIS SANTOS, OSMAR SOUZA |
dc.subject.por.fl_str_mv |
Soybean. Genetic gain. Genotypes. Grain yield. Soja. Melhoramento genético. Cultivar. Rendimento de grão. |
topic |
Soybean. Genetic gain. Genotypes. Grain yield. Soja. Melhoramento genético. Cultivar. Rendimento de grão. |
description |
Experimento were carried out at the Seeds Research Center of Júlio de Castilhos (RS) from September of 1993 to May of 1994 to evaluate the progress in grain yield due to the soybean breeding programo in Rio Grande do Sul state, under three environmental conditions related to soil and crop management. The treatments included 21 soybean cultivars from different eras, chosen by their yield potential and their percentage of use by the soybean growers. The resulto show high progress in grain yield for the last 40 years.The genetic gain was 19 kg/ha/year or 1.1% per year, rangin g from 14.7 to 25.3 kg/ . ha annually, within every environment. When the cultivar 'Amarela Comum' was excluded the gain was 11.7 kg/ha/year, for a 30 years period. However, the grain yield gain hes been decreasing along the years probably because the soybean cultivars have reached high productivity levei and also because there has been constant use of the same germplasm bank for hybridization, creating a genetic narrow base. With emergente of new dioceses in the last decade, there were great changes on soybean varieties preferente, changing from varieties derived from Hill and Hood cultivars to genotypes originated from Davis cultivar. The changing was driven by resistancc to brown stem rot (Phialophora gregata). The great difference in grain yield among environments was due to better use of tecnology on soil and crop tillage. |
publishDate |
1996 |
dc.date.none.fl_str_mv |
1996-07-09 |
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion |
format |
article |
status_str |
publishedVersion |
dc.identifier.uri.fl_str_mv |
http://revistapag.agricultura.rs.gov.br/ojs/index.php/revistapag/article/view/606 |
url |
http://revistapag.agricultura.rs.gov.br/ojs/index.php/revistapag/article/view/606 |
dc.language.iso.fl_str_mv |
por |
language |
por |
dc.relation.none.fl_str_mv |
http://revistapag.agricultura.rs.gov.br/ojs/index.php/revistapag/article/view/606/557 |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
dc.format.none.fl_str_mv |
application/pdf |
dc.publisher.none.fl_str_mv |
Departamento de Diagnóstico e Pesquisa Agropecuária. Secretaria de Agricultura, Pecuária e Desenvolvimento Rural |
publisher.none.fl_str_mv |
Departamento de Diagnóstico e Pesquisa Agropecuária. Secretaria de Agricultura, Pecuária e Desenvolvimento Rural |
dc.source.none.fl_str_mv |
Pesquisa Agropecuária Gaúcha; Vol 2 No 2 (1996): PESQ. AGROP. GAÚCHA; 139-147 Pesquisa Agropecuária Gaúcha; v. 2 n. 2 (1996): PESQ. AGROP. GAÚCHA; 139-147 2595-7686 0104-9070 reponame:Pesquisa Agropecuária Gaúcha (Online) instname:Secretaria de Agricultura, Pecuária e Desenvolvimento Rural do Rio Grande do Sul instacron:SEAPDR |
instname_str |
Secretaria de Agricultura, Pecuária e Desenvolvimento Rural do Rio Grande do Sul |
instacron_str |
SEAPDR |
institution |
SEAPDR |
reponame_str |
Pesquisa Agropecuária Gaúcha (Online) |
collection |
Pesquisa Agropecuária Gaúcha (Online) |
repository.name.fl_str_mv |
Pesquisa Agropecuária Gaúcha (Online) - Secretaria de Agricultura, Pecuária e Desenvolvimento Rural do Rio Grande do Sul |
repository.mail.fl_str_mv |
pag@agricultura.rs.gov.br|| |
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1797068776803401728 |