Differential response of wheat genotypes in relation to phosphorus in the soil
Autor(a) principal: | |
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Data de Publicação: | 1998 |
Outros Autores: | |
Tipo de documento: | Artigo |
Idioma: | por |
Título da fonte: | Pesquisa Agropecuária Brasileira (Online) |
Texto Completo: | https://seer.sct.embrapa.br/index.php/pab/article/view/5076 |
Resumo: | The low phosphorus availability of Brazilizan soils, the high cost of fertilization and the condition of a natural resource not renewable motivated the development of a breeding program at Embrapa-CNPT, aiming at obtaining genotypes with efficiency in the use of soil phosphorus. Genotypes were obtained by backcrossing recurrent cultivars BH 1146, Nobre, Tucunduva 2-78, IAS 55, and Londrina with the cultivar Toropi and were selected in a high acid, phosphorus deficient soil. In this study the genotypes were evaluated in relation to phosphorus, in an environment provided with wire screening, in a Dark Red Latosol (Haplortox) of the Passo Fundo mapping unit, both in the presence and absence of 120 mg/kg of P2O5. The evaluations were carried out based on the production of dry matter of above-ground parts of plants harvested at flowering stage. The controls were the parent materials. Crosses between the cultivar Toropi, less responsive to phosphorus, and cultivars BH 1146, Nobre, and Tucunduva 2-78, more responsives to phosphorus, originated genotypes with intermediate responses to phosphorus as compared to the parents. Genotypes from the crosses of the cultivar Toropi with cultivars IAS 55 and Londrina, which showed responses to phosphorus equal to or higher than Toropi, showed tendency to present higher responses to phosphorus than those observed for the parents. |
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Differential response of wheat genotypes in relation to phosphorus in the soilResposta diferencial de genótipos de trigo em relação a fósforo no soloTriticum aestivum; phosphorus fertilization; plant breedingTriticum aestivum; adubação fosfatada; melhoramentoThe low phosphorus availability of Brazilizan soils, the high cost of fertilization and the condition of a natural resource not renewable motivated the development of a breeding program at Embrapa-CNPT, aiming at obtaining genotypes with efficiency in the use of soil phosphorus. Genotypes were obtained by backcrossing recurrent cultivars BH 1146, Nobre, Tucunduva 2-78, IAS 55, and Londrina with the cultivar Toropi and were selected in a high acid, phosphorus deficient soil. In this study the genotypes were evaluated in relation to phosphorus, in an environment provided with wire screening, in a Dark Red Latosol (Haplortox) of the Passo Fundo mapping unit, both in the presence and absence of 120 mg/kg of P2O5. The evaluations were carried out based on the production of dry matter of above-ground parts of plants harvested at flowering stage. The controls were the parent materials. Crosses between the cultivar Toropi, less responsive to phosphorus, and cultivars BH 1146, Nobre, and Tucunduva 2-78, more responsives to phosphorus, originated genotypes with intermediate responses to phosphorus as compared to the parents. Genotypes from the crosses of the cultivar Toropi with cultivars IAS 55 and Londrina, which showed responses to phosphorus equal to or higher than Toropi, showed tendency to present higher responses to phosphorus than those observed for the parents.A baixa disponibilidade de fósforo dos solos brasileiros, o custo elevado da adubação fosfatada e a condição de recurso natural não renovável e escasso desse nutriente motivaram o desenvolvimento de um programa de melhoramento genético, na Embrapa-CNPT, visando à obtenção de genótipos com maior eficiência no aproveitamento do fósforo no solo. Os materiais foram obtidos por retrocruzamento das cultivares recorrentes BH 1146, Nobre, Tucunduva 2-78, IAS 55 e Londrina com a cultivar Toropi (fonte doadora) e selecionados em solo com deficiência de fósforo e com acidez elevada. Neste estudo foi avaliado o comportamento, em relação a fósforo, de genótipos oriundos desse programa, em condições de vasos, em ambiente de telado, utilizando solo pertencente à Unidade Passo Fundo (Latossolo Vermelho-Escuro, distrófico), na presença e na ausência da aplicação de 120 ppm de P2O5. A avaliação dos tratamentos foi feita através da produção de matéria seca da parte aérea de plantas colhidas na floração, tendo como testemunhas as cultivares progenitoras. Os cruzamentos entre a cultivar Toropi, menos responsiva a fósforo, para a produção de matéria seca da parte aérea, com as cultivares BH 1146, Nobre e Tucunduva 2-78, mais responsivas, deram origem a genótipos com respostas intermediárias às dos progenitores. Os genótipos oriundos dos cruzamentos da cultivar Toropi com IAS 55 e Londrina, com respostas a fósforo semelhantes ou superiores a Toropi, tenderam a apresentar respostas a este nutriente superiores às dos progenitores.Pesquisa Agropecuaria BrasileiraPesquisa Agropecuária BrasileiraRenato Ben, JoséDechen, Antonio Roque1998-12-01info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionapplication/pdfhttps://seer.sct.embrapa.br/index.php/pab/article/view/5076Pesquisa Agropecuaria Brasileira; v.33, n. especial, maio 1998; 589-594Pesquisa Agropecuária Brasileira; v.33, n. especial, maio 1998; 589-5941678-39210100-104xreponame:Pesquisa Agropecuária Brasileira (Online)instname:Empresa Brasileira de Pesquisa Agropecuária (Embrapa)instacron:EMBRAPAporhttps://seer.sct.embrapa.br/index.php/pab/article/view/5076/7198info:eu-repo/semantics/openAccess2015-01-21T16:56:22Zoai:ojs.seer.sct.embrapa.br:article/5076Revistahttp://seer.sct.embrapa.br/index.php/pabPRIhttps://old.scielo.br/oai/scielo-oai.phppab@sct.embrapa.br || sct.pab@embrapa.br1678-39210100-204Xopendoar:2015-01-21T16:56:22Pesquisa Agropecuária Brasileira (Online) - Empresa Brasileira de Pesquisa Agropecuária (Embrapa)false |
dc.title.none.fl_str_mv |
Differential response of wheat genotypes in relation to phosphorus in the soil Resposta diferencial de genótipos de trigo em relação a fósforo no solo |
title |
Differential response of wheat genotypes in relation to phosphorus in the soil |
spellingShingle |
Differential response of wheat genotypes in relation to phosphorus in the soil Renato Ben, José Triticum aestivum; phosphorus fertilization; plant breeding Triticum aestivum; adubação fosfatada; melhoramento |
title_short |
Differential response of wheat genotypes in relation to phosphorus in the soil |
title_full |
Differential response of wheat genotypes in relation to phosphorus in the soil |
title_fullStr |
Differential response of wheat genotypes in relation to phosphorus in the soil |
title_full_unstemmed |
Differential response of wheat genotypes in relation to phosphorus in the soil |
title_sort |
Differential response of wheat genotypes in relation to phosphorus in the soil |
author |
Renato Ben, José |
author_facet |
Renato Ben, José Dechen, Antonio Roque |
author_role |
author |
author2 |
Dechen, Antonio Roque |
author2_role |
author |
dc.contributor.none.fl_str_mv |
|
dc.contributor.author.fl_str_mv |
Renato Ben, José Dechen, Antonio Roque |
dc.subject.none.fl_str_mv |
|
dc.subject.por.fl_str_mv |
Triticum aestivum; phosphorus fertilization; plant breeding Triticum aestivum; adubação fosfatada; melhoramento |
topic |
Triticum aestivum; phosphorus fertilization; plant breeding Triticum aestivum; adubação fosfatada; melhoramento |
description |
The low phosphorus availability of Brazilizan soils, the high cost of fertilization and the condition of a natural resource not renewable motivated the development of a breeding program at Embrapa-CNPT, aiming at obtaining genotypes with efficiency in the use of soil phosphorus. Genotypes were obtained by backcrossing recurrent cultivars BH 1146, Nobre, Tucunduva 2-78, IAS 55, and Londrina with the cultivar Toropi and were selected in a high acid, phosphorus deficient soil. In this study the genotypes were evaluated in relation to phosphorus, in an environment provided with wire screening, in a Dark Red Latosol (Haplortox) of the Passo Fundo mapping unit, both in the presence and absence of 120 mg/kg of P2O5. The evaluations were carried out based on the production of dry matter of above-ground parts of plants harvested at flowering stage. The controls were the parent materials. Crosses between the cultivar Toropi, less responsive to phosphorus, and cultivars BH 1146, Nobre, and Tucunduva 2-78, more responsives to phosphorus, originated genotypes with intermediate responses to phosphorus as compared to the parents. Genotypes from the crosses of the cultivar Toropi with cultivars IAS 55 and Londrina, which showed responses to phosphorus equal to or higher than Toropi, showed tendency to present higher responses to phosphorus than those observed for the parents. |
publishDate |
1998 |
dc.date.none.fl_str_mv |
1998-12-01 |
dc.type.none.fl_str_mv |
|
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 |
https://seer.sct.embrapa.br/index.php/pab/article/view/5076 |
url |
https://seer.sct.embrapa.br/index.php/pab/article/view/5076 |
dc.language.iso.fl_str_mv |
por |
language |
por |
dc.relation.none.fl_str_mv |
https://seer.sct.embrapa.br/index.php/pab/article/view/5076/7198 |
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 |
Pesquisa Agropecuaria Brasileira Pesquisa Agropecuária Brasileira |
publisher.none.fl_str_mv |
Pesquisa Agropecuaria Brasileira Pesquisa Agropecuária Brasileira |
dc.source.none.fl_str_mv |
Pesquisa Agropecuaria Brasileira; v.33, n. especial, maio 1998; 589-594 Pesquisa Agropecuária Brasileira; v.33, n. especial, maio 1998; 589-594 1678-3921 0100-104x reponame:Pesquisa Agropecuária Brasileira (Online) instname:Empresa Brasileira de Pesquisa Agropecuária (Embrapa) instacron:EMBRAPA |
instname_str |
Empresa Brasileira de Pesquisa Agropecuária (Embrapa) |
instacron_str |
EMBRAPA |
institution |
EMBRAPA |
reponame_str |
Pesquisa Agropecuária Brasileira (Online) |
collection |
Pesquisa Agropecuária Brasileira (Online) |
repository.name.fl_str_mv |
Pesquisa Agropecuária Brasileira (Online) - Empresa Brasileira de Pesquisa Agropecuária (Embrapa) |
repository.mail.fl_str_mv |
pab@sct.embrapa.br || sct.pab@embrapa.br |
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1793416683849777152 |