Regional and varietal differences in prevalence and incidence levels of Bipolaris species in Brazilian rice seedlots

Bibliographic Details
Main Author: Del Ponte, Emerson Medeiros
Publication Date: 2014
Other Authors: Funck, Gustavo Daltrozzo, Deibler, Alexandre Nunes, Schwanck, André Aguiar, Caniela, Ana Rita de Almeida, Farias, Cândida Renata Jacobsen de, Meneses, Priscila Rossatto
Format: Article
Language: eng
Source: LOCUS Repositório Institucional da UFV
Download full: http://dx.doi.org/10.1590/S1982-56762014000500001
https://locus.ufv.br//handle/123456789/27139
Summary: A total of 722 rice seed lots were collected at six production regions of Rio Grande do Sul state during three consecutive seasons (2009/10 to 2011/12). For each seed lot, 200 seeds were assessed for the presence of Bipolaris spp. using a standard seed health blotter test. Results showed that B. oryzae and B. cynodontis were found in 62.5% and 10.4% of the seed lots, respectively. Overall mean incidence of B. oryzae and B. cynodontis were 0.5% and 0.06%, respectively. For the two most sampled varieties (75% of the seed lots), IRGA 424 and Puitá INTA CL, mean incidence levels were highest and lowest, respectively. Among regions, infection risk was highest in the southeastern and lowest in the western regions of the state, especially the Fronteira Oeste. The prevalence and the incidence levels of Bipolaris oryzae reported in this study were lower than previous reports in the same region - eighty percent of the seed lots showed incidence levels below the recommended 5% inoculum threshold. In conclusion, rice seeds produced by IRGA-certified growers showed an overall good health quality with regards to B. oryzae infection, which is the main Bipolaris species associated with rice seeds in southern Brazil.
id UFV_9fa07ec08fb66cc3f6d977e67ec31947
oai_identifier_str oai:locus.ufv.br:123456789/27139
network_acronym_str UFV
network_name_str LOCUS Repositório Institucional da UFV
repository_id_str 2145
spelling Del Ponte, Emerson MedeirosFunck, Gustavo DaltrozzoDeibler, Alexandre NunesSchwanck, André AguiarCaniela, Ana Rita de AlmeidaFarias, Cândida Renata Jacobsen deMeneses, Priscila Rossatto2019-09-25T14:42:49Z2019-09-25T14:42:49Z2014-091983-2052http://dx.doi.org/10.1590/S1982-56762014000500001https://locus.ufv.br//handle/123456789/27139A total of 722 rice seed lots were collected at six production regions of Rio Grande do Sul state during three consecutive seasons (2009/10 to 2011/12). For each seed lot, 200 seeds were assessed for the presence of Bipolaris spp. using a standard seed health blotter test. Results showed that B. oryzae and B. cynodontis were found in 62.5% and 10.4% of the seed lots, respectively. Overall mean incidence of B. oryzae and B. cynodontis were 0.5% and 0.06%, respectively. For the two most sampled varieties (75% of the seed lots), IRGA 424 and Puitá INTA CL, mean incidence levels were highest and lowest, respectively. Among regions, infection risk was highest in the southeastern and lowest in the western regions of the state, especially the Fronteira Oeste. The prevalence and the incidence levels of Bipolaris oryzae reported in this study were lower than previous reports in the same region - eighty percent of the seed lots showed incidence levels below the recommended 5% inoculum threshold. In conclusion, rice seeds produced by IRGA-certified growers showed an overall good health quality with regards to B. oryzae infection, which is the main Bipolaris species associated with rice seeds in southern Brazil.engTropical Plant Pathologyv. 39, p. 05, p. 349- 356, set./ out. 2014Bipolaris oryzaeOryza sativaBrown spotSeed pathologyRegional and varietal differences in prevalence and incidence levels of Bipolaris species in Brazilian rice seedlotsinfo:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articleapplication/pdfinfo:eu-repo/semantics/openAccessreponame:LOCUS Repositório Institucional da UFVinstname:Universidade Federal de Viçosa (UFV)instacron:UFVORIGINALartigo.pdfartigo.pdfTexto completoapplication/pdf1963167https://locus.ufv.br//bitstream/123456789/27139/1/artigo.pdf68b376a20cbc25dec7f1a7862a2cf587MD51LICENSElicense.txtlicense.txttext/plain; charset=utf-81748https://locus.ufv.br//bitstream/123456789/27139/2/license.txt8a4605be74aa9ea9d79846c1fba20a33MD52123456789/271392019-09-25 11:56:58.086oai:locus.ufv.br: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Repositório InstitucionalPUBhttps://www.locus.ufv.br/oai/requestfabiojreis@ufv.bropendoar:21452019-09-25T14:56:58LOCUS Repositório Institucional da UFV - Universidade Federal de Viçosa (UFV)false
dc.title.en.fl_str_mv Regional and varietal differences in prevalence and incidence levels of Bipolaris species in Brazilian rice seedlots
title Regional and varietal differences in prevalence and incidence levels of Bipolaris species in Brazilian rice seedlots
spellingShingle Regional and varietal differences in prevalence and incidence levels of Bipolaris species in Brazilian rice seedlots
Del Ponte, Emerson Medeiros
Bipolaris oryzae
Oryza sativa
Brown spot
Seed pathology
title_short Regional and varietal differences in prevalence and incidence levels of Bipolaris species in Brazilian rice seedlots
title_full Regional and varietal differences in prevalence and incidence levels of Bipolaris species in Brazilian rice seedlots
title_fullStr Regional and varietal differences in prevalence and incidence levels of Bipolaris species in Brazilian rice seedlots
title_full_unstemmed Regional and varietal differences in prevalence and incidence levels of Bipolaris species in Brazilian rice seedlots
title_sort Regional and varietal differences in prevalence and incidence levels of Bipolaris species in Brazilian rice seedlots
author Del Ponte, Emerson Medeiros
author_facet Del Ponte, Emerson Medeiros
Funck, Gustavo Daltrozzo
Deibler, Alexandre Nunes
Schwanck, André Aguiar
Caniela, Ana Rita de Almeida
Farias, Cândida Renata Jacobsen de
Meneses, Priscila Rossatto
author_role author
author2 Funck, Gustavo Daltrozzo
Deibler, Alexandre Nunes
Schwanck, André Aguiar
Caniela, Ana Rita de Almeida
Farias, Cândida Renata Jacobsen de
Meneses, Priscila Rossatto
author2_role author
author
author
author
author
author
dc.contributor.author.fl_str_mv Del Ponte, Emerson Medeiros
Funck, Gustavo Daltrozzo
Deibler, Alexandre Nunes
Schwanck, André Aguiar
Caniela, Ana Rita de Almeida
Farias, Cândida Renata Jacobsen de
Meneses, Priscila Rossatto
dc.subject.pt-BR.fl_str_mv Bipolaris oryzae
Oryza sativa
Brown spot
Seed pathology
topic Bipolaris oryzae
Oryza sativa
Brown spot
Seed pathology
description A total of 722 rice seed lots were collected at six production regions of Rio Grande do Sul state during three consecutive seasons (2009/10 to 2011/12). For each seed lot, 200 seeds were assessed for the presence of Bipolaris spp. using a standard seed health blotter test. Results showed that B. oryzae and B. cynodontis were found in 62.5% and 10.4% of the seed lots, respectively. Overall mean incidence of B. oryzae and B. cynodontis were 0.5% and 0.06%, respectively. For the two most sampled varieties (75% of the seed lots), IRGA 424 and Puitá INTA CL, mean incidence levels were highest and lowest, respectively. Among regions, infection risk was highest in the southeastern and lowest in the western regions of the state, especially the Fronteira Oeste. The prevalence and the incidence levels of Bipolaris oryzae reported in this study were lower than previous reports in the same region - eighty percent of the seed lots showed incidence levels below the recommended 5% inoculum threshold. In conclusion, rice seeds produced by IRGA-certified growers showed an overall good health quality with regards to B. oryzae infection, which is the main Bipolaris species associated with rice seeds in southern Brazil.
publishDate 2014
dc.date.issued.fl_str_mv 2014-09
dc.date.accessioned.fl_str_mv 2019-09-25T14:42:49Z
dc.date.available.fl_str_mv 2019-09-25T14:42:49Z
dc.type.status.fl_str_mv info:eu-repo/semantics/publishedVersion
dc.type.driver.fl_str_mv info:eu-repo/semantics/article
format article
status_str publishedVersion
dc.identifier.uri.fl_str_mv http://dx.doi.org/10.1590/S1982-56762014000500001
https://locus.ufv.br//handle/123456789/27139
dc.identifier.issn.none.fl_str_mv 1983-2052
identifier_str_mv 1983-2052
url http://dx.doi.org/10.1590/S1982-56762014000500001
https://locus.ufv.br//handle/123456789/27139
dc.language.iso.fl_str_mv eng
language eng
dc.relation.ispartofseries.pt-BR.fl_str_mv v. 39, p. 05, p. 349- 356, set./ out. 2014
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 Tropical Plant Pathology
publisher.none.fl_str_mv Tropical Plant Pathology
dc.source.none.fl_str_mv reponame:LOCUS Repositório Institucional da UFV
instname:Universidade Federal de Viçosa (UFV)
instacron:UFV
instname_str Universidade Federal de Viçosa (UFV)
instacron_str UFV
institution UFV
reponame_str LOCUS Repositório Institucional da UFV
collection LOCUS Repositório Institucional da UFV
bitstream.url.fl_str_mv https://locus.ufv.br//bitstream/123456789/27139/1/artigo.pdf
https://locus.ufv.br//bitstream/123456789/27139/2/license.txt
bitstream.checksum.fl_str_mv 68b376a20cbc25dec7f1a7862a2cf587
8a4605be74aa9ea9d79846c1fba20a33
bitstream.checksumAlgorithm.fl_str_mv MD5
MD5
repository.name.fl_str_mv LOCUS Repositório Institucional da UFV - Universidade Federal de Viçosa (UFV)
repository.mail.fl_str_mv fabiojreis@ufv.br
_version_ 1801212995833954304