Selection of full-sib families of Panicum maximum Jacq under low light conditions.

The silvopastoral system is a viable technological alternative to extensive cattle grazing, however, for it to be successful, forage grass genotypes adapted to reduced light need to be identified. The objective of this study was to select progenies of Panicum maximum tolerant to low light conditions...

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Autores: VICTOR, D. M., JANK, L., LEMPP, B., SIMEÃO, R. M., RESENDE, M. D. V. de, GONÇALVES, M. C.
Tipo de recurso: artículo
Estado:Versión publicada
Fecha de publicación:2015
País:Brasil
Institución:Empresa Brasileira de Pesquisa Agropecuária (Embrapa)
Repositorio:Repositório Institucional da EMBRAPA (Repository Open Access to Scientific Information from EMBRAPA - Alice)
Idioma:inglés
OAI Identifier:oai:www.alice.cnptia.embrapa.br:doc/1036868
Acceso en línea:http://www.alice.cnptia.embrapa.br/alice/handle/doc/1036868
Access Level:acceso abierto
Palabra clave:Morphophysiology
Acúmulo de biomassa
Morfofisiologia
Híbrido
Sombreamento
Biomass production
Hybrids
Shade
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spelling Selection of full-sib families of Panicum maximum Jacq under low light conditions.MorphophysiologyAcúmulo de biomassaMorfofisiologiaHíbridoSombreamentoBiomass productionHybridsShadeThe silvopastoral system is a viable technological alternative to extensive cattle grazing, however, for it to be successful, forage grass genotypes adapted to reduced light need to be identified. The objective of this study was to select progenies of Panicum maximum tolerant to low light conditions for use in breeding programs and to study the genetic control and performance of some traits associated with shade tolerance. Six full-sib progenies were evaluated in full sun, 50% and 70% of light reduction in pots and subjected to cuttings. Progeny genotypic values (GV) increased with light reduction in relation to plant height (H) and specific leaf area (SLA). The traits total dry mass accumulation (DM) and leaf dry mass accumulation (LDM) had GV higher in 50% shade and intermediate in 70% shade. The GV of tiller number (TIL) and root dry mass accumulation (RDM) decreased with light reduction. The highest positive correlations were obtained for the traits H and RDM with SLA and DM; the highest negative, correlations were between TIL and SLA and RDM, and H and LDM. The progenies showed higher tolerance to 50% light reduction and, among them, two stood out and will be used in breeding programs. It was also found that it is not necessary to evaluate some traits under all light conditions. All traits had high broad sense heritability and high genotypic correlation between progenies in all light intensities. There is genetic difference among the progenies regarding the response to different light intensities, which will allow selection for shade tolerance.DOUGLAS MOCHI VICTOR, EMATER-PR; LIANA JANK, CNPGC; BEATRIZ LEMPP; ROSANGELA MARIA SIMEAO RESENDE, CNPGC; MARCOS DEON VILELA DE RESENDE, CNPF; MANOEL CARLOS GONÇALVES, UFGD.2016-02-15T11:11:11Z2016-02-15T11:11:11Z2016-02-1520152016-02-15T11:11:11Zinfo:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articleRevista Ceres, Viçosa, v.62, n.2, p.199-207, mar-abr, 2015.http://www.alice.cnptia.embrapa.br/alice/handle/doc/1036868enginfo:eu-repo/semantics/openAccessreponame:Repositório Institucional da EMBRAPA (Repository Open Access to Scientific Information from EMBRAPA - Alice)instname:Empresa Brasileira de Pesquisa Agropecuária (Embrapa)instacron:EMBRAPAVICTOR, D. M.JANK, L.LEMPP, B.SIMEÃO, R. M.RESENDE, M. D. V. deGONÇALVES, M. C.2017-08-16T03:43:11Zoai:www.alice.cnptia.embrapa.br:doc/1036868Repositório InstitucionalPUBhttps://www.alice.cnptia.embrapa.br/oai/requestcg-riaa@embrapa.bropendoar:21542017-08-16T03:43:11Repositório Institucional da EMBRAPA (Repository Open Access to Scientific Information from EMBRAPA - Alice) - Empresa Brasileira de Pesquisa Agropecuária (Embrapa)false
dc.title.none.fl_str_mv Selection of full-sib families of Panicum maximum Jacq under low light conditions.
title Selection of full-sib families of Panicum maximum Jacq under low light conditions.
spellingShingle Selection of full-sib families of Panicum maximum Jacq under low light conditions.
VICTOR, D. M.
Morphophysiology
Acúmulo de biomassa
Morfofisiologia
Híbrido
Sombreamento
Biomass production
Hybrids
Shade
title_short Selection of full-sib families of Panicum maximum Jacq under low light conditions.
title_full Selection of full-sib families of Panicum maximum Jacq under low light conditions.
title_fullStr Selection of full-sib families of Panicum maximum Jacq under low light conditions.
title_full_unstemmed Selection of full-sib families of Panicum maximum Jacq under low light conditions.
title_sort Selection of full-sib families of Panicum maximum Jacq under low light conditions.
dc.creator.none.fl_str_mv VICTOR, D. M.
JANK, L.
LEMPP, B.
SIMEÃO, R. M.
RESENDE, M. D. V. de
GONÇALVES, M. C.
author VICTOR, D. M.
author_facet VICTOR, D. M.
JANK, L.
LEMPP, B.
SIMEÃO, R. M.
RESENDE, M. D. V. de
GONÇALVES, M. C.
author_role author
author2 JANK, L.
LEMPP, B.
SIMEÃO, R. M.
RESENDE, M. D. V. de
GONÇALVES, M. C.
author2_role author
author
author
author
author
dc.contributor.none.fl_str_mv DOUGLAS MOCHI VICTOR, EMATER-PR; LIANA JANK, CNPGC; BEATRIZ LEMPP; ROSANGELA MARIA SIMEAO RESENDE, CNPGC; MARCOS DEON VILELA DE RESENDE, CNPF; MANOEL CARLOS GONÇALVES, UFGD.
dc.subject.por.fl_str_mv Morphophysiology
Acúmulo de biomassa
Morfofisiologia
Híbrido
Sombreamento
Biomass production
Hybrids
Shade
topic Morphophysiology
Acúmulo de biomassa
Morfofisiologia
Híbrido
Sombreamento
Biomass production
Hybrids
Shade
description The silvopastoral system is a viable technological alternative to extensive cattle grazing, however, for it to be successful, forage grass genotypes adapted to reduced light need to be identified. The objective of this study was to select progenies of Panicum maximum tolerant to low light conditions for use in breeding programs and to study the genetic control and performance of some traits associated with shade tolerance. Six full-sib progenies were evaluated in full sun, 50% and 70% of light reduction in pots and subjected to cuttings. Progeny genotypic values (GV) increased with light reduction in relation to plant height (H) and specific leaf area (SLA). The traits total dry mass accumulation (DM) and leaf dry mass accumulation (LDM) had GV higher in 50% shade and intermediate in 70% shade. The GV of tiller number (TIL) and root dry mass accumulation (RDM) decreased with light reduction. The highest positive correlations were obtained for the traits H and RDM with SLA and DM; the highest negative, correlations were between TIL and SLA and RDM, and H and LDM. The progenies showed higher tolerance to 50% light reduction and, among them, two stood out and will be used in breeding programs. It was also found that it is not necessary to evaluate some traits under all light conditions. All traits had high broad sense heritability and high genotypic correlation between progenies in all light intensities. There is genetic difference among the progenies regarding the response to different light intensities, which will allow selection for shade tolerance.
publishDate 2015
dc.date.none.fl_str_mv 2015
2016-02-15T11:11:11Z
2016-02-15T11:11:11Z
2016-02-15
2016-02-15T11:11:11Z
dc.type.status.fl_str_mv info:eu-repo/semantics/publishedVersion
dc.type.driver.fl_str_mv info:eu-repo/semantics/article
format article
status_str publishedVersion
dc.identifier.uri.fl_str_mv Revista Ceres, Viçosa, v.62, n.2, p.199-207, mar-abr, 2015.
http://www.alice.cnptia.embrapa.br/alice/handle/doc/1036868
identifier_str_mv Revista Ceres, Viçosa, v.62, n.2, p.199-207, mar-abr, 2015.
url http://www.alice.cnptia.embrapa.br/alice/handle/doc/1036868
dc.language.iso.fl_str_mv eng
language eng
dc.rights.driver.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.source.none.fl_str_mv reponame:Repositório Institucional da EMBRAPA (Repository Open Access to Scientific Information from EMBRAPA - Alice)
instname:Empresa Brasileira de Pesquisa Agropecuária (Embrapa)
instacron:EMBRAPA
instname_str Empresa Brasileira de Pesquisa Agropecuária (Embrapa)
instacron_str EMBRAPA
institution EMBRAPA
reponame_str Repositório Institucional da EMBRAPA (Repository Open Access to Scientific Information from EMBRAPA - Alice)
collection Repositório Institucional da EMBRAPA (Repository Open Access to Scientific Information from EMBRAPA - Alice)
repository.name.fl_str_mv Repositório Institucional da EMBRAPA (Repository Open Access to Scientific Information from EMBRAPA - Alice) - Empresa Brasileira de Pesquisa Agropecuária (Embrapa)
repository.mail.fl_str_mv cg-riaa@embrapa.br
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