Parasitism of Meloidogyne exigua races 1 and 2 in coffee plants derived from Timor Hybrid
Autor(a) principal: | |
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Data de Publicação: | 2021 |
Outros Autores: | , , , , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Ciência Rural |
Texto Completo: | http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782021000700154 |
Resumo: | ABSTRACT: To investigate the degree of parasitism of two populations of Meloidogyne exigua, the gall index (GI) and the reproduction factor (RF) of M. exigua races 1 (Est E2) and 2 (Est E1) were analyzed in 47 progenies on F3:4 or F4:5 generation derived from the crossing between Coffea arabica cv. Catuaí Amarelo and Timor Hybrid. C. canephora cv. Apoatã IAC 2258 and C. arabica cv. Catuaí Vermelho IAC 144 were used as resistance and susceptibility checks, respectively. The genotypes that were classified as resistant or susceptible by RF were similarly classified by GI, showing a close relationship between both methodologies. The data also indicated no differences in virulence between the nematode populations, since the progenies showed similar resistance reactions to the M. exigua races 1 and 2. According to GI from the 47 mother plants evaluated, 27 progenies (57.4%) were classified as resistant to M. exigua races 1 and 2, with GI ranging from 0.0 to 1.4 and 20 progenies (42.6%) were susceptible with GI from 2.6 to 4.4. These results showed that most of the evaluated germplasm was very promising in relation to the development of new Arabica coffee cultivars with resistance to M. exigua. |
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Parasitism of Meloidogyne exigua races 1 and 2 in coffee plants derived from Timor Hybridroot knot nematodegenetic resistanceCoffea arabicaABSTRACT: To investigate the degree of parasitism of two populations of Meloidogyne exigua, the gall index (GI) and the reproduction factor (RF) of M. exigua races 1 (Est E2) and 2 (Est E1) were analyzed in 47 progenies on F3:4 or F4:5 generation derived from the crossing between Coffea arabica cv. Catuaí Amarelo and Timor Hybrid. C. canephora cv. Apoatã IAC 2258 and C. arabica cv. Catuaí Vermelho IAC 144 were used as resistance and susceptibility checks, respectively. The genotypes that were classified as resistant or susceptible by RF were similarly classified by GI, showing a close relationship between both methodologies. The data also indicated no differences in virulence between the nematode populations, since the progenies showed similar resistance reactions to the M. exigua races 1 and 2. According to GI from the 47 mother plants evaluated, 27 progenies (57.4%) were classified as resistant to M. exigua races 1 and 2, with GI ranging from 0.0 to 1.4 and 20 progenies (42.6%) were susceptible with GI from 2.6 to 4.4. These results showed that most of the evaluated germplasm was very promising in relation to the development of new Arabica coffee cultivars with resistance to M. exigua.Universidade Federal de Santa Maria2021-01-01info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersiontext/htmlhttp://old.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782021000700154Ciência Rural v.51 n.7 2021reponame:Ciência Ruralinstname:Universidade Federal de Santa Maria (UFSM)instacron:UFSM10.1590/0103-8478cr20200721info:eu-repo/semantics/openAccessPereira,Antonio AlvesCaixeta,Larissa de BritoFatobene,Bárbhara Joana dos ReisOliveira,Claudio Marcelo GonçalvesGonçalves,WallaceFilho,Oliveiro Guerreiroeng2021-04-19T00:00:00ZRevista |
dc.title.none.fl_str_mv |
Parasitism of Meloidogyne exigua races 1 and 2 in coffee plants derived from Timor Hybrid |
title |
Parasitism of Meloidogyne exigua races 1 and 2 in coffee plants derived from Timor Hybrid |
spellingShingle |
Parasitism of Meloidogyne exigua races 1 and 2 in coffee plants derived from Timor Hybrid Pereira,Antonio Alves root knot nematode genetic resistance Coffea arabica |
title_short |
Parasitism of Meloidogyne exigua races 1 and 2 in coffee plants derived from Timor Hybrid |
title_full |
Parasitism of Meloidogyne exigua races 1 and 2 in coffee plants derived from Timor Hybrid |
title_fullStr |
Parasitism of Meloidogyne exigua races 1 and 2 in coffee plants derived from Timor Hybrid |
title_full_unstemmed |
Parasitism of Meloidogyne exigua races 1 and 2 in coffee plants derived from Timor Hybrid |
title_sort |
Parasitism of Meloidogyne exigua races 1 and 2 in coffee plants derived from Timor Hybrid |
author |
Pereira,Antonio Alves |
author_facet |
Pereira,Antonio Alves Caixeta,Larissa de Brito Fatobene,Bárbhara Joana dos Reis Oliveira,Claudio Marcelo Gonçalves Gonçalves,Wallace Filho,Oliveiro Guerreiro |
author_role |
author |
author2 |
Caixeta,Larissa de Brito Fatobene,Bárbhara Joana dos Reis Oliveira,Claudio Marcelo Gonçalves Gonçalves,Wallace Filho,Oliveiro Guerreiro |
author2_role |
author author author author author |
dc.contributor.author.fl_str_mv |
Pereira,Antonio Alves Caixeta,Larissa de Brito Fatobene,Bárbhara Joana dos Reis Oliveira,Claudio Marcelo Gonçalves Gonçalves,Wallace Filho,Oliveiro Guerreiro |
dc.subject.por.fl_str_mv |
root knot nematode genetic resistance Coffea arabica |
topic |
root knot nematode genetic resistance Coffea arabica |
description |
ABSTRACT: To investigate the degree of parasitism of two populations of Meloidogyne exigua, the gall index (GI) and the reproduction factor (RF) of M. exigua races 1 (Est E2) and 2 (Est E1) were analyzed in 47 progenies on F3:4 or F4:5 generation derived from the crossing between Coffea arabica cv. Catuaí Amarelo and Timor Hybrid. C. canephora cv. Apoatã IAC 2258 and C. arabica cv. Catuaí Vermelho IAC 144 were used as resistance and susceptibility checks, respectively. The genotypes that were classified as resistant or susceptible by RF were similarly classified by GI, showing a close relationship between both methodologies. The data also indicated no differences in virulence between the nematode populations, since the progenies showed similar resistance reactions to the M. exigua races 1 and 2. According to GI from the 47 mother plants evaluated, 27 progenies (57.4%) were classified as resistant to M. exigua races 1 and 2, with GI ranging from 0.0 to 1.4 and 20 progenies (42.6%) were susceptible with GI from 2.6 to 4.4. These results showed that most of the evaluated germplasm was very promising in relation to the development of new Arabica coffee cultivars with resistance to M. exigua. |
publishDate |
2021 |
dc.date.none.fl_str_mv |
2021-01-01 |
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=S0103-84782021000700154 |
url |
http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782021000700154 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
10.1590/0103-8478cr20200721 |
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 de Santa Maria |
publisher.none.fl_str_mv |
Universidade Federal de Santa Maria |
dc.source.none.fl_str_mv |
Ciência Rural v.51 n.7 2021 reponame:Ciência Rural instname:Universidade Federal de Santa Maria (UFSM) instacron:UFSM |
instname_str |
Universidade Federal de Santa Maria (UFSM) |
instacron_str |
UFSM |
institution |
UFSM |
reponame_str |
Ciência Rural |
collection |
Ciência Rural |
repository.name.fl_str_mv |
|
repository.mail.fl_str_mv |
|
_version_ |
1749140556043255808 |