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Registro Completo |
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Biblioteca(s): |
Embrapa Gado de Corte. |
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Data corrente: |
20/07/2004 |
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Data da última atualização: |
05/06/2007 |
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Autoria: |
RESENDE, R. M. S.; JANK, L.; VALLE, C. B. do; BONATO, A. N. V. |
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Afiliação: |
Embrapa Gado de Corte (Campo Grande, MS). |
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Título: |
Biometrical analysis and selection of tetraploid progenies of Panicum maximum using mixed model methods. |
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Ano de publicação: |
2004 |
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Fonte/Imprenta: |
Pesquisa Agropecuária Brasileira, Brasília, DF, v. 39, n. 4, p. 335-341, abr. 2004. |
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Idioma: |
Inglês |
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Notas: |
CNPGC.
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Conteúdo: |
The objectives of this work were to estimate the genetic and phenotypic parameters and to predict the genetic and genotypic values of the selection candidates obtained from intraspecific crosses in Panicum maximum as well as the performance of the hybrid progeny of the existing and projected crosses. Seventy-nine intraspecific hybrids obtained from artificial crosses among five apomictic and three sexual autotetraploid individuals were evaluated in a clonal test with two replications and ten plants per plot. Green matter yield, total and leaf dry matter yields and leaf percentage were evaluated in five cuts per year during three years. Genetic parameters were estimated and breeding and genotypic values were predicted using the restricted maximum likelihood/best linear unbiased prediction procedure (REML/BLUP). The dominant genetic variance was estimated by adjusting the effect of full-sib families. Low magnitude individual narrow sense heritabilities (0.02?0.05), individual broad sense heritabilities (0.14?0.20) and repeatability measured on an individual basis (0.15?0.21) were obtained. Dominance effects for all evaluated characteristics indicated that breeding strategies that explore heterosis must be adopted. Less than 5% increase in the parameter repeatability was obtained for a three-year evaluation period and may be the criterion to determine the maximum number of years of evaluation to be adopted, without compromising gain per cycle of selection. The identification of hybrid candidates for future cultivars and of those that can be incorporated into the breeding program was based on the genotypic and breeding values, respectively. The prediction of the performance of the hybrid progeny, based on the breeding values of the progenitors, permitted the identification of the best crosses and indicated the best parents to use in crosses. MenosThe objectives of this work were to estimate the genetic and phenotypic parameters and to predict the genetic and genotypic values of the selection candidates obtained from intraspecific crosses in Panicum maximum as well as the performance of the hybrid progeny of the existing and projected crosses. Seventy-nine intraspecific hybrids obtained from artificial crosses among five apomictic and three sexual autotetraploid individuals were evaluated in a clonal test with two replications and ten plants per plot. Green matter yield, total and leaf dry matter yields and leaf percentage were evaluated in five cuts per year during three years. Genetic parameters were estimated and breeding and genotypic values were predicted using the restricted maximum likelihood/best linear unbiased prediction procedure (REML/BLUP). The dominant genetic variance was estimated by adjusting the effect of full-sib families. Low magnitude individual narrow sense heritabilities (0.02?0.05), individual broad sense heritabilities (0.14?0.20) and repeatability measured on an individual basis (0.15?0.21) were obtained. Dominance effects for all evaluated characteristics indicated that breeding strategies that explore heterosis must be adopted. Less than 5% increase in the parameter repeatability was obtained for a three-year evaluation period and may be the criterion to determine the maximum number of years of evaluation to be adopted, without compromising gain per cycle of selection. The identification of... Mostrar Tudo |
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Palavras-Chave: |
Colonião; Guineagrass; Herdabilidade; Panicum maximun; Selection. |
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Thesagro: |
Apomixia; Melhoramento Genético Vegetal; Pastagem; Seleção. |
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Thesaurus Nal: |
apomixis; heritability; pastures; plant breeding. |
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Categoria do assunto: |
-- |
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Marc: |
LEADER 02774naa a2200325 a 4500
001 1325554
005 2007-06-05
008 2004 bl uuuu u00u1 u #d
100 1 $aRESENDE, R. M. S.
245 $aBiometrical analysis and selection of tetraploid progenies of Panicum maximum using mixed model methods.
260 $c2004
500 $aCNPGC.
520 $aThe objectives of this work were to estimate the genetic and phenotypic parameters and to predict the genetic and genotypic values of the selection candidates obtained from intraspecific crosses in Panicum maximum as well as the performance of the hybrid progeny of the existing and projected crosses. Seventy-nine intraspecific hybrids obtained from artificial crosses among five apomictic and three sexual autotetraploid individuals were evaluated in a clonal test with two replications and ten plants per plot. Green matter yield, total and leaf dry matter yields and leaf percentage were evaluated in five cuts per year during three years. Genetic parameters were estimated and breeding and genotypic values were predicted using the restricted maximum likelihood/best linear unbiased prediction procedure (REML/BLUP). The dominant genetic variance was estimated by adjusting the effect of full-sib families. Low magnitude individual narrow sense heritabilities (0.02?0.05), individual broad sense heritabilities (0.14?0.20) and repeatability measured on an individual basis (0.15?0.21) were obtained. Dominance effects for all evaluated characteristics indicated that breeding strategies that explore heterosis must be adopted. Less than 5% increase in the parameter repeatability was obtained for a three-year evaluation period and may be the criterion to determine the maximum number of years of evaluation to be adopted, without compromising gain per cycle of selection. The identification of hybrid candidates for future cultivars and of those that can be incorporated into the breeding program was based on the genotypic and breeding values, respectively. The prediction of the performance of the hybrid progeny, based on the breeding values of the progenitors, permitted the identification of the best crosses and indicated the best parents to use in crosses.
650 $aapomixis
650 $aheritability
650 $apastures
650 $aplant breeding
650 $aApomixia
650 $aMelhoramento Genético Vegetal
650 $aPastagem
650 $aSeleção
653 $aColonião
653 $aGuineagrass
653 $aHerdabilidade
653 $aPanicum maximun
653 $aSelection
700 1 $aJANK, L.
700 1 $aVALLE, C. B. do
700 1 $aBONATO, A. N. V.
773 $tPesquisa Agropecuária Brasileira, Brasília, DF$gv. 39, n. 4, p. 335-341, abr. 2004.
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Registro original: |
Embrapa Gado de Corte (CNPGC) |
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Biblioteca |
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| Registros recuperados : 492 | |
| 102. |  | SOUSA, A. C. B.; JANK, L.; CAMPOS, T.; SFORÇA, D. A.; JUNGMANN, L.; SOUZA, A. P. Caracterização molecular do banco de germoplasma de Panicum maximum Jacq. In: JORNADA CIENTÍFICA DA EMBRAPA GADO DE CORTE,5., 2009, Campo Grande, MS. [Anais da ...]. Campo Grande, MS: Embrapa Gado de Corte, 2009. 1 p.| Tipo: Resumo em Anais de Congresso |
| Biblioteca(s): Embrapa Gado de Corte. |
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| 108. | | GOMES, R. A.; LEMPP, B.; JANK, L.; CARPEJANI, G. C.; MORAES, M. da G. Correlações lineares entre características anatômicas, morfofisiológicas, químicas e biológicas de lâminas foliares de genótipos de Panicum maximum. In: SIMPÓSIO, 7.; CONGRESSO DE FORRAGICULTURA E PASTAGENS, 3., 2009, Lavras. Anais... Lavras: UFLA, 2009. 3 p. 1 CD-ROM.| Tipo: Artigo em Anais de Congresso / Nota Técnica |
| Biblioteca(s): Embrapa Gado de Corte. |
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| 109. | | ALMEIDA, M. C. da C.; CHIARI, L.; JANK, L.; VALLE, C. B. do. Diversidade genética molecular entre cultivares e híbridos de Brachiaria spp. e Panicum maximum. Ciência Rural, Santa Maria, v.41, n.11, p.1998-2003, nov, 2011.| Tipo: Artigo em Periódico Indexado | Circulação/Nível: B - 1 |
| Biblioteca(s): Embrapa Gado de Corte. |
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| 110. | | ASSIS, T. E.; BARRIOS, S. C. L.; VALLE, C. B. do; JANK, L.; SANTOS, M. F. Distinguibilidade de cultivares de Brachiaria para características vegetativas e reprodutivas. In: WORKSHOP MELHORAMENTO VEGETAL: CONTRIBUIÇÕES, AVANÇOS E PERSPECTIVAS PARA O CERRADO BRASILEIRO, 2., 2016. Anais... Campo Grande, MS: SBMP, 2016. Publicado também na 12ª Jornada Científica da Embrapa Gado de Corte.| Tipo: Resumo em Anais de Congresso |
| Biblioteca(s): Embrapa Gado de Corte. |
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| 115. | | SOUZA, S. M. L. de; JANK, L.; SANTOS, M. F.; LAURA, V. A. Avaliação de dois genótipos e duas cultivares de Megathyrsus maximus ao estresse hídrico sob polietileno glicol 6000 (peg-6000). In: JORNADA CIENTÍFICA EMBRAPA GADO DE CORTE, 14., 2018, Campo Grande - MS. [Resumos dos trabalhos]. Brasília, DF, Embrapa, 2018 115 p. (Embrapa Gado de Corte. Documentos, 258). p. 102-103| Tipo: Resumo em Anais de Congresso |
| Biblioteca(s): Embrapa Gado de Corte. |
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| 117. | | AMORIM, T. R; SILVA, M. J. da; FERNANDES, C. D.; JANK, L.; MEIRELES, K. G. X. Avaliação de genótipos de Panicum maximum quanto à resistência a Bipolaris maydis. In: INTERNATIONAL SYMPOSIUM ON FORAGE BREEDING, 3., 2011, Bonito, MS. Breeding forage for climate change adaptation and mitigation - eco-efficient animal produtction: proceedings. [Campo Grande, MS: Embrapa Gado de Corte], 2011. 254-257 1 CD-ROM| Tipo: Artigo em Anais de Congresso |
| Biblioteca(s): Embrapa Gado de Corte. |
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| 118. | | SOUSA, A. C. B.; CAMPOS, T.; CARVALHO, M. A.; JUNGMANN, L.; JANK, L.; SOUZA, A. P. Microsatellite markers: cross amplification and genetic studies in Centrosema species. In: INTERNATIONAL SYMPOSIUM ON THE MOLECULAR BREEDING OF FORAGE AND TURF: MBFT, 2010, 6., 2010, Buenos Aires. [Resumos...]. Buenos Aires: Ediciones INTA, 2010. p. 123124| Tipo: Resumo em Anais de Congresso |
| Biblioteca(s): Embrapa Gado de Corte. |
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| 119. | | MARCOS, M. F.; JANK, L.; FERNANDES, C. D.; VERZIGNASSI, J. R. Reação à Bipolaris maydis, agente causal da mancha foliar, em híbridos apomíticos de Panicum maximum. Summa Phytopathol., Botucatu, v. 41, n. 3, p. 197-201, 2015.| Tipo: Artigo em Periódico Indexado | Circulação/Nível: B - 1 |
| Biblioteca(s): Embrapa Gado de Corte. |
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| 120. | | MOREIRA, D. A. L.; JANK, L.; RESENDE, R. M. S.; LAURA, V. A.; NAKA, I. M. Tolerância de genótipos de Panicum maximum ao estresse hídrico por alagamento. In: JORNADA CIENTÍFICA EMBRAPA GADO DE CORTE, 8., 2012, Campo Grande, MS. [Anais da..]. Campo Grande, MS: Embrapa Gado de Corte, 2012. 2 p. (Embrapa Gado de Corte. Documentos, 198).| Tipo: Resumo em Anais de Congresso |
| Biblioteca(s): Embrapa Gado de Corte. |
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| Registros recuperados : 492 | |
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| Nenhum registro encontrado para a expressão de busca informada. |
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