Relationship between mycelial inoculum of Sclerotinia sclerotiorum and performance of sunflower seeds under controlled conditions

Detalhes bibliográficos
Autor(a) principal: Zancan, Willian Luis Antonio
Data de Publicação: 2015
Outros Autores: Machado, José da Cruz, Baute, Nayara Lima, de Sousa, Bruno Figueiredo Moretti
Tipo de documento: Artigo
Idioma: eng
Título da fonte: Bioscience journal (Online)
Texto Completo: https://seer.ufu.br/index.php/biosciencejournal/article/view/26090
Resumo: The cultivated area of sunflower in Brazil is expanding considerably over the last years as the result of the great interest in the biodiesel production derived from that crop. One consequence of that expansion is the occurrence of several diseases some of devastating nature in part of the growing areas with sunflower. This study evaluated the effects of the association of sunflower seeds infected by Sclerotinia sclerotiorum and the pathogen transmission rates from these infected seeds, considering some factors which may interfere in that interaction. Four inoculum potentials, two isolates of the cited fungus, two sunflower cultivars, 'Helio 250' and 'Helio 253' and two environmental temperatures, 20°C and 25°C, were used for the purpose in this work. Seed germination and health, emergence speed index, and plant populations were variables analyzed. From the results, increased levels of inoculum potentials led to gradual reduction of the mean values of germination, emergence rate index and plant populations, regardless the genotype, fungal isolates and temperatures. Transmission rates were higher at the highest levels of inoculum potential, the maximum reaching 80%. These results show the significance of S. sclerotiorum inoculum associated with sunflower seeds both in the establishment of plants in fields and also in spreading the pathogen inoculum between crop fields. 
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spelling Relationship between mycelial inoculum of Sclerotinia sclerotiorum and performance of sunflower seeds under controlled conditions Helianthus annuusphysiologic conditioningtransmissiowhite moldAgricultural SciencesThe cultivated area of sunflower in Brazil is expanding considerably over the last years as the result of the great interest in the biodiesel production derived from that crop. One consequence of that expansion is the occurrence of several diseases some of devastating nature in part of the growing areas with sunflower. This study evaluated the effects of the association of sunflower seeds infected by Sclerotinia sclerotiorum and the pathogen transmission rates from these infected seeds, considering some factors which may interfere in that interaction. Four inoculum potentials, two isolates of the cited fungus, two sunflower cultivars, 'Helio 250' and 'Helio 253' and two environmental temperatures, 20°C and 25°C, were used for the purpose in this work. Seed germination and health, emergence speed index, and plant populations were variables analyzed. From the results, increased levels of inoculum potentials led to gradual reduction of the mean values of germination, emergence rate index and plant populations, regardless the genotype, fungal isolates and temperatures. Transmission rates were higher at the highest levels of inoculum potential, the maximum reaching 80%. These results show the significance of S. sclerotiorum inoculum associated with sunflower seeds both in the establishment of plants in fields and also in spreading the pathogen inoculum between crop fields. EDUFU2015-05-16info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionapplication/pdfhttps://seer.ufu.br/index.php/biosciencejournal/article/view/2609010.14393/BJ-v31n3a2015-26090Bioscience Journal ; Vol. 31 No. 3 (2015): May/June; 775-784Bioscience Journal ; v. 31 n. 3 (2015): May/June; 775-7841981-3163reponame:Bioscience journal (Online)instname:Universidade Federal de Uberlândia (UFU)instacron:UFUenghttps://seer.ufu.br/index.php/biosciencejournal/article/view/26090/16463Brazil; ContemporaryCopyright (c) 2015 Willian Luis Antonio Zancan, José da Cruz Machado, Nayara Lima Baute, Bruno Figueiredo Moretti de Sousahttps://creativecommons.org/licenses/by/4.0info:eu-repo/semantics/openAccessZancan, Willian Luis AntonioMachado, José da CruzBaute, Nayara Limade Sousa, Bruno Figueiredo Moretti2022-05-26T13:23:51Zoai:ojs.www.seer.ufu.br:article/26090Revistahttps://seer.ufu.br/index.php/biosciencejournalPUBhttps://seer.ufu.br/index.php/biosciencejournal/oaibiosciencej@ufu.br||1981-31631516-3725opendoar:2022-05-26T13:23:51Bioscience journal (Online) - Universidade Federal de Uberlândia (UFU)false
dc.title.none.fl_str_mv Relationship between mycelial inoculum of Sclerotinia sclerotiorum and performance of sunflower seeds under controlled conditions
title Relationship between mycelial inoculum of Sclerotinia sclerotiorum and performance of sunflower seeds under controlled conditions
spellingShingle Relationship between mycelial inoculum of Sclerotinia sclerotiorum and performance of sunflower seeds under controlled conditions
Zancan, Willian Luis Antonio
Helianthus annuus
physiologic conditioning
transmissio
white mold
Agricultural Sciences
title_short Relationship between mycelial inoculum of Sclerotinia sclerotiorum and performance of sunflower seeds under controlled conditions
title_full Relationship between mycelial inoculum of Sclerotinia sclerotiorum and performance of sunflower seeds under controlled conditions
title_fullStr Relationship between mycelial inoculum of Sclerotinia sclerotiorum and performance of sunflower seeds under controlled conditions
title_full_unstemmed Relationship between mycelial inoculum of Sclerotinia sclerotiorum and performance of sunflower seeds under controlled conditions
title_sort Relationship between mycelial inoculum of Sclerotinia sclerotiorum and performance of sunflower seeds under controlled conditions
author Zancan, Willian Luis Antonio
author_facet Zancan, Willian Luis Antonio
Machado, José da Cruz
Baute, Nayara Lima
de Sousa, Bruno Figueiredo Moretti
author_role author
author2 Machado, José da Cruz
Baute, Nayara Lima
de Sousa, Bruno Figueiredo Moretti
author2_role author
author
author
dc.contributor.author.fl_str_mv Zancan, Willian Luis Antonio
Machado, José da Cruz
Baute, Nayara Lima
de Sousa, Bruno Figueiredo Moretti
dc.subject.por.fl_str_mv Helianthus annuus
physiologic conditioning
transmissio
white mold
Agricultural Sciences
topic Helianthus annuus
physiologic conditioning
transmissio
white mold
Agricultural Sciences
description The cultivated area of sunflower in Brazil is expanding considerably over the last years as the result of the great interest in the biodiesel production derived from that crop. One consequence of that expansion is the occurrence of several diseases some of devastating nature in part of the growing areas with sunflower. This study evaluated the effects of the association of sunflower seeds infected by Sclerotinia sclerotiorum and the pathogen transmission rates from these infected seeds, considering some factors which may interfere in that interaction. Four inoculum potentials, two isolates of the cited fungus, two sunflower cultivars, 'Helio 250' and 'Helio 253' and two environmental temperatures, 20°C and 25°C, were used for the purpose in this work. Seed germination and health, emergence speed index, and plant populations were variables analyzed. From the results, increased levels of inoculum potentials led to gradual reduction of the mean values of germination, emergence rate index and plant populations, regardless the genotype, fungal isolates and temperatures. Transmission rates were higher at the highest levels of inoculum potential, the maximum reaching 80%. These results show the significance of S. sclerotiorum inoculum associated with sunflower seeds both in the establishment of plants in fields and also in spreading the pathogen inoculum between crop fields. 
publishDate 2015
dc.date.none.fl_str_mv 2015-05-16
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.ufu.br/index.php/biosciencejournal/article/view/26090
10.14393/BJ-v31n3a2015-26090
url https://seer.ufu.br/index.php/biosciencejournal/article/view/26090
identifier_str_mv 10.14393/BJ-v31n3a2015-26090
dc.language.iso.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv https://seer.ufu.br/index.php/biosciencejournal/article/view/26090/16463
dc.rights.driver.fl_str_mv https://creativecommons.org/licenses/by/4.0
info:eu-repo/semantics/openAccess
rights_invalid_str_mv https://creativecommons.org/licenses/by/4.0
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv application/pdf
dc.coverage.none.fl_str_mv Brazil; Contemporary
dc.publisher.none.fl_str_mv EDUFU
publisher.none.fl_str_mv EDUFU
dc.source.none.fl_str_mv Bioscience Journal ; Vol. 31 No. 3 (2015): May/June; 775-784
Bioscience Journal ; v. 31 n. 3 (2015): May/June; 775-784
1981-3163
reponame:Bioscience journal (Online)
instname:Universidade Federal de Uberlândia (UFU)
instacron:UFU
instname_str Universidade Federal de Uberlândia (UFU)
instacron_str UFU
institution UFU
reponame_str Bioscience journal (Online)
collection Bioscience journal (Online)
repository.name.fl_str_mv Bioscience journal (Online) - Universidade Federal de Uberlândia (UFU)
repository.mail.fl_str_mv biosciencej@ufu.br||
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