Comparison of yield damage of tropical maize hybrids caused by anthracnose stalk rot
Autor(a) principal: | |
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Data de Publicação: | 2013 |
Outros Autores: | , , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Tropical plant pathology (Online) |
Texto Completo: | http://old.scielo.br/scielo.php?script=sci_arttext&pid=S1982-56762013000200006 |
Resumo: | The objective of this study was to estimate the reduction in yield caused by Colletotrichum graminicola in resistant and susceptible maize hybrids inoculated at different stages of development. Two trials were conducted in different environmental conditions in a randomized block design with treatments arranged as a 2 × 5 factorial scheme and three replications. Treatments consisted of two hybrids (H8664, resistant and H8621, susceptible) inoculated at three growing stages (8-leaf, 12-leaf and tasseling stage). Internal lesion length, adjusted yield, and yield components (length, diameter and ear weight) were evaluated 120 days after emergence. Significant differences in yield and ear weight were detected in the susceptible hybrid inoculated at the earliest stage: yield was reduced by 16.1 and 20.2% in the first and second experiment, respectively. Although lesion length in the susceptible hybrid was approximately three times greater than in the resistant, there were no significant differences in lesion length among treatments for each hybrid. However, there were differences in the number of dead plants and ear weight. It is suggested that damage caused by early infection with C. graminicola results mainly from plant death and reduction in ear weigh rather than from the extent of colonization of the stalk. |
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Comparison of yield damage of tropical maize hybrids caused by anthracnose stalk rotColletotrichum graminicolaZea maysdiseaseThe objective of this study was to estimate the reduction in yield caused by Colletotrichum graminicola in resistant and susceptible maize hybrids inoculated at different stages of development. Two trials were conducted in different environmental conditions in a randomized block design with treatments arranged as a 2 × 5 factorial scheme and three replications. Treatments consisted of two hybrids (H8664, resistant and H8621, susceptible) inoculated at three growing stages (8-leaf, 12-leaf and tasseling stage). Internal lesion length, adjusted yield, and yield components (length, diameter and ear weight) were evaluated 120 days after emergence. Significant differences in yield and ear weight were detected in the susceptible hybrid inoculated at the earliest stage: yield was reduced by 16.1 and 20.2% in the first and second experiment, respectively. Although lesion length in the susceptible hybrid was approximately three times greater than in the resistant, there were no significant differences in lesion length among treatments for each hybrid. However, there were differences in the number of dead plants and ear weight. It is suggested that damage caused by early infection with C. graminicola results mainly from plant death and reduction in ear weigh rather than from the extent of colonization of the stalk.Sociedade Brasileira de Fitopatologia2013-04-01info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersiontext/htmlhttp://old.scielo.br/scielo.php?script=sci_arttext&pid=S1982-56762013000200006Tropical Plant Pathology v.38 n.2 2013reponame:Tropical plant pathology (Online)instname:Sociedade Brasileira de Fitopatologiainstacron:SBF10.1590/S1982-56762013000200006info:eu-repo/semantics/openAccessMatiello,Rodrigo R.Lopes,Maria Teresa G.Brunelli,Kátia R.Camargo,Luis Eduardo A.eng2013-05-07T00:00:00Zoai:scielo:S1982-56762013000200006Revistahttps://www.scielo.br/j/tpp/ONGhttps://old.scielo.br/oai/scielo-oai.phpsbf-revista@ufla.br1983-20521982-5676opendoar:2013-05-07T00:00Tropical plant pathology (Online) - Sociedade Brasileira de Fitopatologiafalse |
dc.title.none.fl_str_mv |
Comparison of yield damage of tropical maize hybrids caused by anthracnose stalk rot |
title |
Comparison of yield damage of tropical maize hybrids caused by anthracnose stalk rot |
spellingShingle |
Comparison of yield damage of tropical maize hybrids caused by anthracnose stalk rot Matiello,Rodrigo R. Colletotrichum graminicola Zea mays disease |
title_short |
Comparison of yield damage of tropical maize hybrids caused by anthracnose stalk rot |
title_full |
Comparison of yield damage of tropical maize hybrids caused by anthracnose stalk rot |
title_fullStr |
Comparison of yield damage of tropical maize hybrids caused by anthracnose stalk rot |
title_full_unstemmed |
Comparison of yield damage of tropical maize hybrids caused by anthracnose stalk rot |
title_sort |
Comparison of yield damage of tropical maize hybrids caused by anthracnose stalk rot |
author |
Matiello,Rodrigo R. |
author_facet |
Matiello,Rodrigo R. Lopes,Maria Teresa G. Brunelli,Kátia R. Camargo,Luis Eduardo A. |
author_role |
author |
author2 |
Lopes,Maria Teresa G. Brunelli,Kátia R. Camargo,Luis Eduardo A. |
author2_role |
author author author |
dc.contributor.author.fl_str_mv |
Matiello,Rodrigo R. Lopes,Maria Teresa G. Brunelli,Kátia R. Camargo,Luis Eduardo A. |
dc.subject.por.fl_str_mv |
Colletotrichum graminicola Zea mays disease |
topic |
Colletotrichum graminicola Zea mays disease |
description |
The objective of this study was to estimate the reduction in yield caused by Colletotrichum graminicola in resistant and susceptible maize hybrids inoculated at different stages of development. Two trials were conducted in different environmental conditions in a randomized block design with treatments arranged as a 2 × 5 factorial scheme and three replications. Treatments consisted of two hybrids (H8664, resistant and H8621, susceptible) inoculated at three growing stages (8-leaf, 12-leaf and tasseling stage). Internal lesion length, adjusted yield, and yield components (length, diameter and ear weight) were evaluated 120 days after emergence. Significant differences in yield and ear weight were detected in the susceptible hybrid inoculated at the earliest stage: yield was reduced by 16.1 and 20.2% in the first and second experiment, respectively. Although lesion length in the susceptible hybrid was approximately three times greater than in the resistant, there were no significant differences in lesion length among treatments for each hybrid. However, there were differences in the number of dead plants and ear weight. It is suggested that damage caused by early infection with C. graminicola results mainly from plant death and reduction in ear weigh rather than from the extent of colonization of the stalk. |
publishDate |
2013 |
dc.date.none.fl_str_mv |
2013-04-01 |
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=S1982-56762013000200006 |
url |
http://old.scielo.br/scielo.php?script=sci_arttext&pid=S1982-56762013000200006 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
10.1590/S1982-56762013000200006 |
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 |
Sociedade Brasileira de Fitopatologia |
publisher.none.fl_str_mv |
Sociedade Brasileira de Fitopatologia |
dc.source.none.fl_str_mv |
Tropical Plant Pathology v.38 n.2 2013 reponame:Tropical plant pathology (Online) instname:Sociedade Brasileira de Fitopatologia instacron:SBF |
instname_str |
Sociedade Brasileira de Fitopatologia |
instacron_str |
SBF |
institution |
SBF |
reponame_str |
Tropical plant pathology (Online) |
collection |
Tropical plant pathology (Online) |
repository.name.fl_str_mv |
Tropical plant pathology (Online) - Sociedade Brasileira de Fitopatologia |
repository.mail.fl_str_mv |
sbf-revista@ufla.br |
_version_ |
1754824585968091136 |