Genetic control of blast in relation to nitrogen fertilization in upland rice.
Autor(a) principal: | |
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Data de Publicação: | 1996 |
Outros Autores: | , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Repositório Institucional da EMBRAPA (Repository Open Access to Scientific Information from EMBRAPA - Alice) |
Texto Completo: | http://www.alice.cnptia.embrapa.br/alice/handle/doc/205460 |
Resumo: | Six upland rice cultivars were evaluated under two nitrogen levels (10 kg and 60 kg N/ha) for blast control based on slow leaf and panicle blast characteristics in field experiments conducted during three consecutive years. The criteria for measuring slow blasting resistance were area under disease progress curve (AUDPC), maximum severity during disease progress (Ymax) and the rate of increase until the disease reaches maximum ('ymax.). There was a high positive correlation among the criteria utilized. The control of leaf blast in improved rice cultivars (Cuiabana, Centro America, Guarani, Rio Paranaiba) ranged from 36 to 56% for 10 kg/ha of N and from 19 to 49% for 60 kg/ha of N over the susceptible checks (IAC 47, IAC 165). The effect of slow blasting resistance on panicle blast control was less than on leaf blast in most of the cultivars. Increasing the nitrogen level from 10 to 60 kg/ha resulted in a mean yield increase by only 12% corresponding to 258 kg/ha. The data suggest that the existing level os slow blasting resistance in the improved rice cultivars is efficient only under low nitrogen level. |
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Genetic control of blast in relation to nitrogen fertilization in upland rice.ArrozCerradoEpidemiologiaOryza SativaPyricularia OryzaeResistênciaPyricularia GriseariceSix upland rice cultivars were evaluated under two nitrogen levels (10 kg and 60 kg N/ha) for blast control based on slow leaf and panicle blast characteristics in field experiments conducted during three consecutive years. The criteria for measuring slow blasting resistance were area under disease progress curve (AUDPC), maximum severity during disease progress (Ymax) and the rate of increase until the disease reaches maximum ('ymax.). There was a high positive correlation among the criteria utilized. The control of leaf blast in improved rice cultivars (Cuiabana, Centro America, Guarani, Rio Paranaiba) ranged from 36 to 56% for 10 kg/ha of N and from 19 to 49% for 60 kg/ha of N over the susceptible checks (IAC 47, IAC 165). The effect of slow blasting resistance on panicle blast control was less than on leaf blast in most of the cultivars. Increasing the nitrogen level from 10 to 60 kg/ha resulted in a mean yield increase by only 12% corresponding to 258 kg/ha. The data suggest that the existing level os slow blasting resistance in the improved rice cultivars is efficient only under low nitrogen level.ANNE SITARAMA PRABHU, CNPAFMARTA CRISTINA CORSI DE FILIPPI, CNPAFFRANCISCO JOSE P ZIMMERMANN, CNPAF.PRABHU, A. S.FILIPPI, M. C. C. deZIMMERMANN, F. J. P.2013-03-20T23:30:29Z2013-03-20T23:30:29Z1999-02-1019962013-03-20T23:30:29Zinfo:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articlePesquisa Agropecuária Brasileira, v. 31, n. 5, p. 339-347, maio 1996.http://www.alice.cnptia.embrapa.br/alice/handle/doc/205460enginfo:eu-repo/semantics/openAccessreponame:Repositório Institucional da EMBRAPA (Repository Open Access to Scientific Information from EMBRAPA - Alice)instname:Empresa Brasileira de Pesquisa Agropecuária (Embrapa)instacron:EMBRAPA2017-08-15T23:14:36Zoai:www.alice.cnptia.embrapa.br:doc/205460Repositório InstitucionalPUBhttps://www.alice.cnptia.embrapa.br/oai/requestopendoar:21542017-08-15T23:14:36falseRepositório InstitucionalPUBhttps://www.alice.cnptia.embrapa.br/oai/requestcg-riaa@embrapa.bropendoar:21542017-08-15T23:14:36Repositório Institucional da EMBRAPA (Repository Open Access to Scientific Information from EMBRAPA - Alice) - Empresa Brasileira de Pesquisa Agropecuária (Embrapa)false |
dc.title.none.fl_str_mv |
Genetic control of blast in relation to nitrogen fertilization in upland rice. |
title |
Genetic control of blast in relation to nitrogen fertilization in upland rice. |
spellingShingle |
Genetic control of blast in relation to nitrogen fertilization in upland rice. PRABHU, A. S. Arroz Cerrado Epidemiologia Oryza Sativa Pyricularia Oryzae Resistência Pyricularia Grisea rice |
title_short |
Genetic control of blast in relation to nitrogen fertilization in upland rice. |
title_full |
Genetic control of blast in relation to nitrogen fertilization in upland rice. |
title_fullStr |
Genetic control of blast in relation to nitrogen fertilization in upland rice. |
title_full_unstemmed |
Genetic control of blast in relation to nitrogen fertilization in upland rice. |
title_sort |
Genetic control of blast in relation to nitrogen fertilization in upland rice. |
author |
PRABHU, A. S. |
author_facet |
PRABHU, A. S. FILIPPI, M. C. C. de ZIMMERMANN, F. J. P. |
author_role |
author |
author2 |
FILIPPI, M. C. C. de ZIMMERMANN, F. J. P. |
author2_role |
author author |
dc.contributor.none.fl_str_mv |
ANNE SITARAMA PRABHU, CNPAF MARTA CRISTINA CORSI DE FILIPPI, CNPAF FRANCISCO JOSE P ZIMMERMANN, CNPAF. |
dc.contributor.author.fl_str_mv |
PRABHU, A. S. FILIPPI, M. C. C. de ZIMMERMANN, F. J. P. |
dc.subject.por.fl_str_mv |
Arroz Cerrado Epidemiologia Oryza Sativa Pyricularia Oryzae Resistência Pyricularia Grisea rice |
topic |
Arroz Cerrado Epidemiologia Oryza Sativa Pyricularia Oryzae Resistência Pyricularia Grisea rice |
description |
Six upland rice cultivars were evaluated under two nitrogen levels (10 kg and 60 kg N/ha) for blast control based on slow leaf and panicle blast characteristics in field experiments conducted during three consecutive years. The criteria for measuring slow blasting resistance were area under disease progress curve (AUDPC), maximum severity during disease progress (Ymax) and the rate of increase until the disease reaches maximum ('ymax.). There was a high positive correlation among the criteria utilized. The control of leaf blast in improved rice cultivars (Cuiabana, Centro America, Guarani, Rio Paranaiba) ranged from 36 to 56% for 10 kg/ha of N and from 19 to 49% for 60 kg/ha of N over the susceptible checks (IAC 47, IAC 165). The effect of slow blasting resistance on panicle blast control was less than on leaf blast in most of the cultivars. Increasing the nitrogen level from 10 to 60 kg/ha resulted in a mean yield increase by only 12% corresponding to 258 kg/ha. The data suggest that the existing level os slow blasting resistance in the improved rice cultivars is efficient only under low nitrogen level. |
publishDate |
1996 |
dc.date.none.fl_str_mv |
1996 1999-02-10 2013-03-20T23:30:29Z 2013-03-20T23:30:29Z 2013-03-20T23:30:29Z |
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/publishedVersion info:eu-repo/semantics/article |
format |
article |
status_str |
publishedVersion |
dc.identifier.uri.fl_str_mv |
Pesquisa Agropecuária Brasileira, v. 31, n. 5, p. 339-347, maio 1996. http://www.alice.cnptia.embrapa.br/alice/handle/doc/205460 |
identifier_str_mv |
Pesquisa Agropecuária Brasileira, v. 31, n. 5, p. 339-347, maio 1996. |
url |
http://www.alice.cnptia.embrapa.br/alice/handle/doc/205460 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
dc.source.none.fl_str_mv |
reponame:Repositório Institucional da EMBRAPA (Repository Open Access to Scientific Information from EMBRAPA - Alice) instname:Empresa Brasileira de Pesquisa Agropecuária (Embrapa) instacron:EMBRAPA |
instname_str |
Empresa Brasileira de Pesquisa Agropecuária (Embrapa) |
instacron_str |
EMBRAPA |
institution |
EMBRAPA |
reponame_str |
Repositório Institucional da EMBRAPA (Repository Open Access to Scientific Information from EMBRAPA - Alice) |
collection |
Repositório Institucional da EMBRAPA (Repository Open Access to Scientific Information from EMBRAPA - Alice) |
repository.name.fl_str_mv |
Repositório Institucional da EMBRAPA (Repository Open Access to Scientific Information from EMBRAPA - Alice) - Empresa Brasileira de Pesquisa Agropecuária (Embrapa) |
repository.mail.fl_str_mv |
cg-riaa@embrapa.br |
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1794503376765976576 |