Method for evaluating rhizoctonia resistance in melon germplasm
Autor(a) principal: | |
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Data de Publicação: | 2020 |
Outros Autores: | , , , , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Revista ciência agronômica (Online) |
Texto Completo: | http://old.scielo.br/scielo.php?script=sci_arttext&pid=S1806-66902020000400416 |
Resumo: | ABSTRACT The intensive cultivation of melon, mainly in the Northeast of Brazil, has favored the occurrence of root diseases such as rhizoctonia, caused by the fungus Rhizoctonia solani Kuhn. The use of resistant cultivars is one of the most efficient strategic measures for integrated management of diseases in this crop. It is necessary to use an efficient inoculation method to evaluate rhizoctonia in melon germplasm with the aim of identifying sources of resistance. The objective of this study was to develop an efficient method to inoculate the pathogen to proceed in selection of R. solani resistant melon germplasm. Five experiments were conducted under greenhouse conditions to define the adequate container, growth environment, substrate for inoculum production, aggressiveness of the isolates, inoculum density, manner of inoculation, phenological stage of the plant, and time for evaluation after inoculation. The results obtained showed that for selection of R. solani resistant melon germplasm, the use of seedlings with roots cut during transplanting to pots is recommended. The pots should contain sand with organic inoculum obtained from rice grains at the concentration of 150 mg.kg-1 of soil, associated with inoculation through a puncture in the plant stem by an infested toothpick, without the need for a moist chamber. The most aggressive isolate was CMM-1068. |
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Method for evaluating rhizoctonia resistance in melon germplasmCucumis meloRhizoctonia solaniGenetic resistanceDamping offABSTRACT The intensive cultivation of melon, mainly in the Northeast of Brazil, has favored the occurrence of root diseases such as rhizoctonia, caused by the fungus Rhizoctonia solani Kuhn. The use of resistant cultivars is one of the most efficient strategic measures for integrated management of diseases in this crop. It is necessary to use an efficient inoculation method to evaluate rhizoctonia in melon germplasm with the aim of identifying sources of resistance. The objective of this study was to develop an efficient method to inoculate the pathogen to proceed in selection of R. solani resistant melon germplasm. Five experiments were conducted under greenhouse conditions to define the adequate container, growth environment, substrate for inoculum production, aggressiveness of the isolates, inoculum density, manner of inoculation, phenological stage of the plant, and time for evaluation after inoculation. The results obtained showed that for selection of R. solani resistant melon germplasm, the use of seedlings with roots cut during transplanting to pots is recommended. The pots should contain sand with organic inoculum obtained from rice grains at the concentration of 150 mg.kg-1 of soil, associated with inoculation through a puncture in the plant stem by an infested toothpick, without the need for a moist chamber. The most aggressive isolate was CMM-1068.Universidade Federal do Ceará2020-01-01info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersiontext/htmlhttp://old.scielo.br/scielo.php?script=sci_arttext&pid=S1806-66902020000400416Revista Ciência Agronômica v.51 n.4 2020reponame:Revista ciência agronômica (Online)instname:Universidade Federal do Ceará (UFC)instacron:UFC10.5935/1806-6690.20200076info:eu-repo/semantics/openAccessSilva,Gefferson Thiago Mota de AlmeidaOliveira,Frederico Inácio Costa deCarvalho,Alexya Vitoria FelixAndré,Thais Paz PinheiroSilva,Christiana de Fátima Bruce daAragão,Fernando Antonio Souza deeng2020-11-17T00:00:00Zoai:scielo:S1806-66902020000400416Revistahttp://www.ccarevista.ufc.br/PUBhttps://old.scielo.br/oai/scielo-oai.php||alekdutra@ufc.br|| ccarev@ufc.br1806-66900045-6888opendoar:2020-11-17T00:00Revista ciência agronômica (Online) - Universidade Federal do Ceará (UFC)false |
dc.title.none.fl_str_mv |
Method for evaluating rhizoctonia resistance in melon germplasm |
title |
Method for evaluating rhizoctonia resistance in melon germplasm |
spellingShingle |
Method for evaluating rhizoctonia resistance in melon germplasm Silva,Gefferson Thiago Mota de Almeida Cucumis melo Rhizoctonia solani Genetic resistance Damping off |
title_short |
Method for evaluating rhizoctonia resistance in melon germplasm |
title_full |
Method for evaluating rhizoctonia resistance in melon germplasm |
title_fullStr |
Method for evaluating rhizoctonia resistance in melon germplasm |
title_full_unstemmed |
Method for evaluating rhizoctonia resistance in melon germplasm |
title_sort |
Method for evaluating rhizoctonia resistance in melon germplasm |
author |
Silva,Gefferson Thiago Mota de Almeida |
author_facet |
Silva,Gefferson Thiago Mota de Almeida Oliveira,Frederico Inácio Costa de Carvalho,Alexya Vitoria Felix André,Thais Paz Pinheiro Silva,Christiana de Fátima Bruce da Aragão,Fernando Antonio Souza de |
author_role |
author |
author2 |
Oliveira,Frederico Inácio Costa de Carvalho,Alexya Vitoria Felix André,Thais Paz Pinheiro Silva,Christiana de Fátima Bruce da Aragão,Fernando Antonio Souza de |
author2_role |
author author author author author |
dc.contributor.author.fl_str_mv |
Silva,Gefferson Thiago Mota de Almeida Oliveira,Frederico Inácio Costa de Carvalho,Alexya Vitoria Felix André,Thais Paz Pinheiro Silva,Christiana de Fátima Bruce da Aragão,Fernando Antonio Souza de |
dc.subject.por.fl_str_mv |
Cucumis melo Rhizoctonia solani Genetic resistance Damping off |
topic |
Cucumis melo Rhizoctonia solani Genetic resistance Damping off |
description |
ABSTRACT The intensive cultivation of melon, mainly in the Northeast of Brazil, has favored the occurrence of root diseases such as rhizoctonia, caused by the fungus Rhizoctonia solani Kuhn. The use of resistant cultivars is one of the most efficient strategic measures for integrated management of diseases in this crop. It is necessary to use an efficient inoculation method to evaluate rhizoctonia in melon germplasm with the aim of identifying sources of resistance. The objective of this study was to develop an efficient method to inoculate the pathogen to proceed in selection of R. solani resistant melon germplasm. Five experiments were conducted under greenhouse conditions to define the adequate container, growth environment, substrate for inoculum production, aggressiveness of the isolates, inoculum density, manner of inoculation, phenological stage of the plant, and time for evaluation after inoculation. The results obtained showed that for selection of R. solani resistant melon germplasm, the use of seedlings with roots cut during transplanting to pots is recommended. The pots should contain sand with organic inoculum obtained from rice grains at the concentration of 150 mg.kg-1 of soil, associated with inoculation through a puncture in the plant stem by an infested toothpick, without the need for a moist chamber. The most aggressive isolate was CMM-1068. |
publishDate |
2020 |
dc.date.none.fl_str_mv |
2020-01-01 |
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/article |
dc.type.status.fl_str_mv |
info:eu-repo/semantics/publishedVersion |
format |
article |
status_str |
publishedVersion |
dc.identifier.uri.fl_str_mv |
http://old.scielo.br/scielo.php?script=sci_arttext&pid=S1806-66902020000400416 |
url |
http://old.scielo.br/scielo.php?script=sci_arttext&pid=S1806-66902020000400416 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
10.5935/1806-6690.20200076 |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
dc.format.none.fl_str_mv |
text/html |
dc.publisher.none.fl_str_mv |
Universidade Federal do Ceará |
publisher.none.fl_str_mv |
Universidade Federal do Ceará |
dc.source.none.fl_str_mv |
Revista Ciência Agronômica v.51 n.4 2020 reponame:Revista ciência agronômica (Online) instname:Universidade Federal do Ceará (UFC) instacron:UFC |
instname_str |
Universidade Federal do Ceará (UFC) |
instacron_str |
UFC |
institution |
UFC |
reponame_str |
Revista ciência agronômica (Online) |
collection |
Revista ciência agronômica (Online) |
repository.name.fl_str_mv |
Revista ciência agronômica (Online) - Universidade Federal do Ceará (UFC) |
repository.mail.fl_str_mv |
||alekdutra@ufc.br|| ccarev@ufc.br |
_version_ |
1750297489912627200 |