Mechanism of resistance and presence of different resistance genes to Ramularia areola in two cotton genotypes
Autor(a) principal: | |
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Data de Publicação: | 2012 |
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=S1982-56762012000300002 |
Resumo: | Earlier studies showed that the resistance of cotton genotype FMT 02102996 to Ramularia areola is governed by one dominant gene. More recently, the resistance of another genotype CNPA BA 2003-2059 to R. areola was detected under field and glasshouse conditions. Present investigation was conducted to verify the mechanism of resistance of the genotype CNPA BA 2003-2059 and to find out if the resistance of these two genotypes is governed by the same or by different genes. Segregating plant populations derived from the cross between the resistant genotype CNPA BA 2003-2059 and the susceptible genotype FMT 701, the back cross populations, as well as those derived from the cross between the two resistant genotypes were evaluated for disease severity by artificial inoculations under glasshouse conditions. The ratio of plants segregating for resistance and susceptibility was studied by χ2 test. The results indicated that the resistance to R. areola in genotype CNPA BA 2003-2059 is governed by one dominant gene and that the resistance in each one of the resistant genotypes is governed by a different dominant gene. These results may assist the local breeding programs aimed at pyramiding resistance genes to this pathogen and may form the basis for genetic mapping of resistance genes. |
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Mechanism of resistance and presence of different resistance genes to Ramularia areola in two cotton genotypesGossypium hirsutumgeneticsinheritance of resistanceEarlier studies showed that the resistance of cotton genotype FMT 02102996 to Ramularia areola is governed by one dominant gene. More recently, the resistance of another genotype CNPA BA 2003-2059 to R. areola was detected under field and glasshouse conditions. Present investigation was conducted to verify the mechanism of resistance of the genotype CNPA BA 2003-2059 and to find out if the resistance of these two genotypes is governed by the same or by different genes. Segregating plant populations derived from the cross between the resistant genotype CNPA BA 2003-2059 and the susceptible genotype FMT 701, the back cross populations, as well as those derived from the cross between the two resistant genotypes were evaluated for disease severity by artificial inoculations under glasshouse conditions. The ratio of plants segregating for resistance and susceptibility was studied by χ2 test. The results indicated that the resistance to R. areola in genotype CNPA BA 2003-2059 is governed by one dominant gene and that the resistance in each one of the resistant genotypes is governed by a different dominant gene. These results may assist the local breeding programs aimed at pyramiding resistance genes to this pathogen and may form the basis for genetic mapping of resistance genes.Sociedade Brasileira de Fitopatologia2012-06-01info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersiontext/htmlhttp://old.scielo.br/scielo.php?script=sci_arttext&pid=S1982-56762012000300002Tropical Plant Pathology v.37 n.3 2012reponame:Tropical plant pathology (Online)instname:Sociedade Brasileira de Fitopatologiainstacron:SBF10.1590/S1982-56762012000300002info:eu-repo/semantics/openAccessZandoná,CarlaNovaes,Tanara G.Nunes,Maria PaulaAlmeida,Wilson P.Aguiar,Paulo H.Morello,Camilo L.Shuster,IvanMehta,Yeshwant R.eng2012-07-03T00:00:00Zoai:scielo:S1982-56762012000300002Revistahttps://www.scielo.br/j/tpp/ONGhttps://old.scielo.br/oai/scielo-oai.phpsbf-revista@ufla.br1983-20521982-5676opendoar:2012-07-03T00:00Tropical plant pathology (Online) - Sociedade Brasileira de Fitopatologiafalse |
dc.title.none.fl_str_mv |
Mechanism of resistance and presence of different resistance genes to Ramularia areola in two cotton genotypes |
title |
Mechanism of resistance and presence of different resistance genes to Ramularia areola in two cotton genotypes |
spellingShingle |
Mechanism of resistance and presence of different resistance genes to Ramularia areola in two cotton genotypes Zandoná,Carla Gossypium hirsutum genetics inheritance of resistance |
title_short |
Mechanism of resistance and presence of different resistance genes to Ramularia areola in two cotton genotypes |
title_full |
Mechanism of resistance and presence of different resistance genes to Ramularia areola in two cotton genotypes |
title_fullStr |
Mechanism of resistance and presence of different resistance genes to Ramularia areola in two cotton genotypes |
title_full_unstemmed |
Mechanism of resistance and presence of different resistance genes to Ramularia areola in two cotton genotypes |
title_sort |
Mechanism of resistance and presence of different resistance genes to Ramularia areola in two cotton genotypes |
author |
Zandoná,Carla |
author_facet |
Zandoná,Carla Novaes,Tanara G. Nunes,Maria Paula Almeida,Wilson P. Aguiar,Paulo H. Morello,Camilo L. Shuster,Ivan Mehta,Yeshwant R. |
author_role |
author |
author2 |
Novaes,Tanara G. Nunes,Maria Paula Almeida,Wilson P. Aguiar,Paulo H. Morello,Camilo L. Shuster,Ivan Mehta,Yeshwant R. |
author2_role |
author author author author author author author |
dc.contributor.author.fl_str_mv |
Zandoná,Carla Novaes,Tanara G. Nunes,Maria Paula Almeida,Wilson P. Aguiar,Paulo H. Morello,Camilo L. Shuster,Ivan Mehta,Yeshwant R. |
dc.subject.por.fl_str_mv |
Gossypium hirsutum genetics inheritance of resistance |
topic |
Gossypium hirsutum genetics inheritance of resistance |
description |
Earlier studies showed that the resistance of cotton genotype FMT 02102996 to Ramularia areola is governed by one dominant gene. More recently, the resistance of another genotype CNPA BA 2003-2059 to R. areola was detected under field and glasshouse conditions. Present investigation was conducted to verify the mechanism of resistance of the genotype CNPA BA 2003-2059 and to find out if the resistance of these two genotypes is governed by the same or by different genes. Segregating plant populations derived from the cross between the resistant genotype CNPA BA 2003-2059 and the susceptible genotype FMT 701, the back cross populations, as well as those derived from the cross between the two resistant genotypes were evaluated for disease severity by artificial inoculations under glasshouse conditions. The ratio of plants segregating for resistance and susceptibility was studied by χ2 test. The results indicated that the resistance to R. areola in genotype CNPA BA 2003-2059 is governed by one dominant gene and that the resistance in each one of the resistant genotypes is governed by a different dominant gene. These results may assist the local breeding programs aimed at pyramiding resistance genes to this pathogen and may form the basis for genetic mapping of resistance genes. |
publishDate |
2012 |
dc.date.none.fl_str_mv |
2012-06-01 |
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=S1982-56762012000300002 |
url |
http://old.scielo.br/scielo.php?script=sci_arttext&pid=S1982-56762012000300002 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
10.1590/S1982-56762012000300002 |
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.37 n.3 2012 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_ |
1754824585842262016 |