Correlation between blast resistance in wheat cultivars and conidia sporulation rate of Pyricularia oryzae Triticum
Autor(a) principal: | |
---|---|
Data de Publicação: | 2023 |
Outros Autores: | , , , |
Tipo de documento: | preprint |
Idioma: | eng |
Título da fonte: | SciELO Preprints |
Texto Completo: | https://preprints.scielo.org/index.php/scielo/preprint/view/5489 |
Resumo: | The use of resistant wheat cultivars is a fundamental strategy to minimize the damages caused by blast, a disease caused by the fungus Pyricularia oryzae Triticum (PoT). The objective of this study was to evaluate (a) the reaction to blast of Brazilian wheat cultivars and (b) to determine whether there is correlation between severity of symptoms on wheat spikes and “sporulation rate of PoT conidia per gram of wheat spike rachis” (Rscon). Plants of 16 wheat cultivars were grown in greenhouse until flowering (Zadoks stage 65), when their spikes were inoculated with a suspension formed by mixing the conidia of three PoT isolates. The evaluated variables were blast severity on spikes at 5, 7 and 11 days after inoculation (dai) and Rscon. Rachis were evaluated individually to determine the Rscon. Correlation analyzes were carried out between blast severity means on spikes of cultivars at 5, 7 and 11 dai and the log of Rscon. The cultivars ORS Feroz, ORS Destak, CD 116, ORS 1403, ORS 1401, TBIO Aton and TBIO Mestre stood out for being classified in the statistical groups with the highest resistance to blast for the four variables considered in the study. The correlation between blast severity on spikes at 5, 7 and 11 dai and Rscon was not significant. |
id |
SCI-1_589bec5d6f04b65aa44bca51aba2bb31 |
---|---|
oai_identifier_str |
oai:ops.preprints.scielo.org:preprint/5489 |
network_acronym_str |
SCI-1 |
network_name_str |
SciELO Preprints |
repository_id_str |
|
spelling |
Correlation between blast resistance in wheat cultivars and conidia sporulation rate of Pyricularia oryzae TriticumCorrelação entre resistência à brusone em cultivares de trigo e taxa de esporulação de conídios de Pyricularia oryzae Triticum Severity on wheat spikeswheat spike rachis2NS chromosomal sequenceSeveridade em espigas de trigoráquis da espiga de trigosequência cromossomal 2NSThe use of resistant wheat cultivars is a fundamental strategy to minimize the damages caused by blast, a disease caused by the fungus Pyricularia oryzae Triticum (PoT). The objective of this study was to evaluate (a) the reaction to blast of Brazilian wheat cultivars and (b) to determine whether there is correlation between severity of symptoms on wheat spikes and “sporulation rate of PoT conidia per gram of wheat spike rachis” (Rscon). Plants of 16 wheat cultivars were grown in greenhouse until flowering (Zadoks stage 65), when their spikes were inoculated with a suspension formed by mixing the conidia of three PoT isolates. The evaluated variables were blast severity on spikes at 5, 7 and 11 days after inoculation (dai) and Rscon. Rachis were evaluated individually to determine the Rscon. Correlation analyzes were carried out between blast severity means on spikes of cultivars at 5, 7 and 11 dai and the log of Rscon. The cultivars ORS Feroz, ORS Destak, CD 116, ORS 1403, ORS 1401, TBIO Aton and TBIO Mestre stood out for being classified in the statistical groups with the highest resistance to blast for the four variables considered in the study. The correlation between blast severity on spikes at 5, 7 and 11 dai and Rscon was not significant.A utilização de cultivares de trigo resistentes é estratégia fundamental para minimizar danos causados pela brusone, doença causada pelo fungo Pyricularia oryzae Triticum (PoT). O objetivo do estudo foi avaliar (a) a reação à brusone de cultivares brasileiras de trigo e (b) verificar a correlação entre a severidade dos sintomas na espiga e a “taxa de esporulação de conídios de PoT em ráquis de espigas de trigo” (Txcon). Plantas de 16 cultivares de trigo foram conduzidas em casa-de-vegetação até o florescimento (estádio 65 da escala de Zadoks), quando as espigas das mesmas foram submetidas à inoculação com uma suspensão formada pela mistura de conídios de três isolados de PoT. As variáveis avaliadas foram a severidade de brusone nas espigas aos cinco, sete e 11 dias após a inoculação (dai) e a Txcon. A Txcon foi determinada de forma individualizada para os ráquis. Foram realizadas análises de correlação entre as médias de severidade de brusone nas espigas das cultivares aos cinco, sete e 11 dai e o log das Txcon. As cultivares ORS Feroz, ORS Destak, CD 116, ORS 1403, ORS 1401, TBIO Aton e TBIO Mestre se destacaram por terem sido classificadas nos grupos estatísticos de maior resistência à brusone para as quatro variáveis consideradas no estudo. Verificou-se a existência de correlação entre a severidade de brusone nas espigas aos 5, 7 e 11 dai e Txcon.SciELO PreprintsSciELO PreprintsSciELO Preprints2023-05-02info:eu-repo/semantics/preprintinfo:eu-repo/semantics/publishedVersionapplication/pdfhttps://preprints.scielo.org/index.php/scielo/preprint/view/548910.1590/SciELOPreprints.5489enghttps://preprints.scielo.org/index.php/scielo/article/view/5489/11490Copyright (c) 2023 João Leodato Nunes Maciel, Marcos Kovaleski, Daniela da Silva, Cláudia Cristina Clebsch, Carolina Cardoso Deunerhttps://creativecommons.org/licenses/by/4.0info:eu-repo/semantics/openAccessMaciel, João Leodato NunesKovaleski, MarcosSilva, Daniela daClebsch, Cláudia CristinaDeuner, Carolina Cardosoreponame:SciELO Preprintsinstname:Scientific Electronic Library Online (SCIELO)instacron:SCI2023-01-26T23:20:28Zoai:ops.preprints.scielo.org:preprint/5489Servidor de preprintshttps://preprints.scielo.org/index.php/scieloONGhttps://preprints.scielo.org/index.php/scielo/oaiscielo.submission@scielo.orgopendoar:2023-01-26T23:20:28SciELO Preprints - Scientific Electronic Library Online (SCIELO)false |
dc.title.none.fl_str_mv |
Correlation between blast resistance in wheat cultivars and conidia sporulation rate of Pyricularia oryzae Triticum Correlação entre resistência à brusone em cultivares de trigo e taxa de esporulação de conídios de Pyricularia oryzae Triticum |
title |
Correlation between blast resistance in wheat cultivars and conidia sporulation rate of Pyricularia oryzae Triticum |
spellingShingle |
Correlation between blast resistance in wheat cultivars and conidia sporulation rate of Pyricularia oryzae Triticum Maciel, João Leodato Nunes Severity on wheat spikes wheat spike rachis 2NS chromosomal sequence Severidade em espigas de trigo ráquis da espiga de trigo sequência cromossomal 2NS |
title_short |
Correlation between blast resistance in wheat cultivars and conidia sporulation rate of Pyricularia oryzae Triticum |
title_full |
Correlation between blast resistance in wheat cultivars and conidia sporulation rate of Pyricularia oryzae Triticum |
title_fullStr |
Correlation between blast resistance in wheat cultivars and conidia sporulation rate of Pyricularia oryzae Triticum |
title_full_unstemmed |
Correlation between blast resistance in wheat cultivars and conidia sporulation rate of Pyricularia oryzae Triticum |
title_sort |
Correlation between blast resistance in wheat cultivars and conidia sporulation rate of Pyricularia oryzae Triticum |
author |
Maciel, João Leodato Nunes |
author_facet |
Maciel, João Leodato Nunes Kovaleski, Marcos Silva, Daniela da Clebsch, Cláudia Cristina Deuner, Carolina Cardoso |
author_role |
author |
author2 |
Kovaleski, Marcos Silva, Daniela da Clebsch, Cláudia Cristina Deuner, Carolina Cardoso |
author2_role |
author author author author |
dc.contributor.author.fl_str_mv |
Maciel, João Leodato Nunes Kovaleski, Marcos Silva, Daniela da Clebsch, Cláudia Cristina Deuner, Carolina Cardoso |
dc.subject.por.fl_str_mv |
Severity on wheat spikes wheat spike rachis 2NS chromosomal sequence Severidade em espigas de trigo ráquis da espiga de trigo sequência cromossomal 2NS |
topic |
Severity on wheat spikes wheat spike rachis 2NS chromosomal sequence Severidade em espigas de trigo ráquis da espiga de trigo sequência cromossomal 2NS |
description |
The use of resistant wheat cultivars is a fundamental strategy to minimize the damages caused by blast, a disease caused by the fungus Pyricularia oryzae Triticum (PoT). The objective of this study was to evaluate (a) the reaction to blast of Brazilian wheat cultivars and (b) to determine whether there is correlation between severity of symptoms on wheat spikes and “sporulation rate of PoT conidia per gram of wheat spike rachis” (Rscon). Plants of 16 wheat cultivars were grown in greenhouse until flowering (Zadoks stage 65), when their spikes were inoculated with a suspension formed by mixing the conidia of three PoT isolates. The evaluated variables were blast severity on spikes at 5, 7 and 11 days after inoculation (dai) and Rscon. Rachis were evaluated individually to determine the Rscon. Correlation analyzes were carried out between blast severity means on spikes of cultivars at 5, 7 and 11 dai and the log of Rscon. The cultivars ORS Feroz, ORS Destak, CD 116, ORS 1403, ORS 1401, TBIO Aton and TBIO Mestre stood out for being classified in the statistical groups with the highest resistance to blast for the four variables considered in the study. The correlation between blast severity on spikes at 5, 7 and 11 dai and Rscon was not significant. |
publishDate |
2023 |
dc.date.none.fl_str_mv |
2023-05-02 |
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/preprint info:eu-repo/semantics/publishedVersion |
format |
preprint |
status_str |
publishedVersion |
dc.identifier.uri.fl_str_mv |
https://preprints.scielo.org/index.php/scielo/preprint/view/5489 10.1590/SciELOPreprints.5489 |
url |
https://preprints.scielo.org/index.php/scielo/preprint/view/5489 |
identifier_str_mv |
10.1590/SciELOPreprints.5489 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
https://preprints.scielo.org/index.php/scielo/article/view/5489/11490 |
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.publisher.none.fl_str_mv |
SciELO Preprints SciELO Preprints SciELO Preprints |
publisher.none.fl_str_mv |
SciELO Preprints SciELO Preprints SciELO Preprints |
dc.source.none.fl_str_mv |
reponame:SciELO Preprints instname:Scientific Electronic Library Online (SCIELO) instacron:SCI |
instname_str |
Scientific Electronic Library Online (SCIELO) |
instacron_str |
SCI |
institution |
SCI |
reponame_str |
SciELO Preprints |
collection |
SciELO Preprints |
repository.name.fl_str_mv |
SciELO Preprints - Scientific Electronic Library Online (SCIELO) |
repository.mail.fl_str_mv |
scielo.submission@scielo.org |
_version_ |
1797047810560884736 |