A novel technique to produce polygenic resistance to anthracnose in Stylosanthes capitata
Autor(a) principal: | |
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Data de Publicação: | 2001 |
Outros Autores: | , |
Tipo de documento: | Artigo de conferência |
Idioma: | eng |
Título da fonte: | Repositório Institucional da UNESP |
Texto Completo: | http://hdl.handle.net/11449/38184 |
Resumo: | An improved cultivar, based on 17 genotypes of S. capitata and six of S.macrocephala, was developed at the wEmbrapa Beef Cattle Research Center, Campo Grande, Brazil. The aim was to create durable, race non-specific resistance to anthracnose controlled by polygenic factors. A mass hybridisation technique was employed to produce a high degree of genetic diversity and sizeable quantities of seed of hybrid-derived progenies of Brazilian and Venezuelan genotypes of S. capitata. Outcrossing resulted in a significant improvement in the forage production of progeny of Venezuelan accessions. The multicross was evaluated in multilocational trials, each representing a large tract of country in the Cerrados ecosystem along a north-south transect from lat.6degrees S to 20degrees S. The genetic shift that occurred in S. capitata was a key element in the formation of the new cultivar. It is a complex mixture of two species, and a recombination of much desired forage traits of Brazilian x Venezuelan genotypes, high forage and seed yields coupled with anthracnose resistance. The new cultivar with its diverse genetic make-up has a wide application in the acid-soil savannas of tropical America. It was released by Embrapa for the Cerrados in 2000. |
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A novel technique to produce polygenic resistance to anthracnose in Stylosanthes capitataStylosanthes capitatahybridisationcultivar developmentCerradosAn improved cultivar, based on 17 genotypes of S. capitata and six of S.macrocephala, was developed at the wEmbrapa Beef Cattle Research Center, Campo Grande, Brazil. The aim was to create durable, race non-specific resistance to anthracnose controlled by polygenic factors. A mass hybridisation technique was employed to produce a high degree of genetic diversity and sizeable quantities of seed of hybrid-derived progenies of Brazilian and Venezuelan genotypes of S. capitata. Outcrossing resulted in a significant improvement in the forage production of progeny of Venezuelan accessions. The multicross was evaluated in multilocational trials, each representing a large tract of country in the Cerrados ecosystem along a north-south transect from lat.6degrees S to 20degrees S. The genetic shift that occurred in S. capitata was a key element in the formation of the new cultivar. It is a complex mixture of two species, and a recombination of much desired forage traits of Brazilian x Venezuelan genotypes, high forage and seed yields coupled with anthracnose resistance. The new cultivar with its diverse genetic make-up has a wide application in the acid-soil savannas of tropical America. It was released by Embrapa for the Cerrados in 2000.Univ Estadual Paulista Julio Mesquita Filho, FCA, EMBRAPA, Beef Cattle Res Ctr, Botucatu, SP, BrazilUniv Estadual Paulista Julio Mesquita Filho, FCA, EMBRAPA, Beef Cattle Res Ctr, Botucatu, SP, BrazilFundação Estudos Agrarios Luiz Queiroz (fealq)Universidade Estadual Paulista (Unesp)Grof, B.Fernandes, C. D.Fernandes, ATF2014-05-20T15:28:22Z2014-05-20T15:28:22Z2001-01-01info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/conferenceObject525-525Proceedings of the Xix International Grassland Congress. Piracicaba: Fundação Estudos Agrarios Luiz Queiroz (fealq), p. 525-525, 2001.http://hdl.handle.net/11449/38184WOS:000184566200243Web of Sciencereponame:Repositório Institucional da UNESPinstname:Universidade Estadual Paulista (UNESP)instacron:UNESPengProceedings of the Xix International Grassland Congressinfo:eu-repo/semantics/openAccess2021-10-23T21:41:33Zoai:repositorio.unesp.br:11449/38184Repositório InstitucionalPUBhttp://repositorio.unesp.br/oai/requestopendoar:29462024-08-05T15:05:22.098393Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP)false |
dc.title.none.fl_str_mv |
A novel technique to produce polygenic resistance to anthracnose in Stylosanthes capitata |
title |
A novel technique to produce polygenic resistance to anthracnose in Stylosanthes capitata |
spellingShingle |
A novel technique to produce polygenic resistance to anthracnose in Stylosanthes capitata Grof, B. Stylosanthes capitata hybridisation cultivar development Cerrados |
title_short |
A novel technique to produce polygenic resistance to anthracnose in Stylosanthes capitata |
title_full |
A novel technique to produce polygenic resistance to anthracnose in Stylosanthes capitata |
title_fullStr |
A novel technique to produce polygenic resistance to anthracnose in Stylosanthes capitata |
title_full_unstemmed |
A novel technique to produce polygenic resistance to anthracnose in Stylosanthes capitata |
title_sort |
A novel technique to produce polygenic resistance to anthracnose in Stylosanthes capitata |
author |
Grof, B. |
author_facet |
Grof, B. Fernandes, C. D. Fernandes, ATF |
author_role |
author |
author2 |
Fernandes, C. D. Fernandes, ATF |
author2_role |
author author |
dc.contributor.none.fl_str_mv |
Universidade Estadual Paulista (Unesp) |
dc.contributor.author.fl_str_mv |
Grof, B. Fernandes, C. D. Fernandes, ATF |
dc.subject.por.fl_str_mv |
Stylosanthes capitata hybridisation cultivar development Cerrados |
topic |
Stylosanthes capitata hybridisation cultivar development Cerrados |
description |
An improved cultivar, based on 17 genotypes of S. capitata and six of S.macrocephala, was developed at the wEmbrapa Beef Cattle Research Center, Campo Grande, Brazil. The aim was to create durable, race non-specific resistance to anthracnose controlled by polygenic factors. A mass hybridisation technique was employed to produce a high degree of genetic diversity and sizeable quantities of seed of hybrid-derived progenies of Brazilian and Venezuelan genotypes of S. capitata. Outcrossing resulted in a significant improvement in the forage production of progeny of Venezuelan accessions. The multicross was evaluated in multilocational trials, each representing a large tract of country in the Cerrados ecosystem along a north-south transect from lat.6degrees S to 20degrees S. The genetic shift that occurred in S. capitata was a key element in the formation of the new cultivar. It is a complex mixture of two species, and a recombination of much desired forage traits of Brazilian x Venezuelan genotypes, high forage and seed yields coupled with anthracnose resistance. The new cultivar with its diverse genetic make-up has a wide application in the acid-soil savannas of tropical America. It was released by Embrapa for the Cerrados in 2000. |
publishDate |
2001 |
dc.date.none.fl_str_mv |
2001-01-01 2014-05-20T15:28:22Z 2014-05-20T15:28:22Z |
dc.type.status.fl_str_mv |
info:eu-repo/semantics/publishedVersion |
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/conferenceObject |
format |
conferenceObject |
status_str |
publishedVersion |
dc.identifier.uri.fl_str_mv |
Proceedings of the Xix International Grassland Congress. Piracicaba: Fundação Estudos Agrarios Luiz Queiroz (fealq), p. 525-525, 2001. http://hdl.handle.net/11449/38184 WOS:000184566200243 |
identifier_str_mv |
Proceedings of the Xix International Grassland Congress. Piracicaba: Fundação Estudos Agrarios Luiz Queiroz (fealq), p. 525-525, 2001. WOS:000184566200243 |
url |
http://hdl.handle.net/11449/38184 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
Proceedings of the Xix International Grassland Congress |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
dc.format.none.fl_str_mv |
525-525 |
dc.publisher.none.fl_str_mv |
Fundação Estudos Agrarios Luiz Queiroz (fealq) |
publisher.none.fl_str_mv |
Fundação Estudos Agrarios Luiz Queiroz (fealq) |
dc.source.none.fl_str_mv |
Web of Science reponame:Repositório Institucional da UNESP instname:Universidade Estadual Paulista (UNESP) instacron:UNESP |
instname_str |
Universidade Estadual Paulista (UNESP) |
instacron_str |
UNESP |
institution |
UNESP |
reponame_str |
Repositório Institucional da UNESP |
collection |
Repositório Institucional da UNESP |
repository.name.fl_str_mv |
Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP) |
repository.mail.fl_str_mv |
|
_version_ |
1808128458282237952 |