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Registro Completo |
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Biblioteca(s): |
Embrapa Milho e Sorgo. |
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Data corrente: |
28/06/2012 |
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Data da última atualização: |
29/06/2012 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Autoria: |
GUADAGNIN, J. P.; RODRIGUES, L. R.; CARGNELUTTI FILHO, A.; EMYGDIO, B. M.; AMES, C. G.; BUZZETTI, D.; SANTOS, F. M. dos; MACHADO, J. R. de A. |
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Afiliação: |
BEATRIZ MARTI EMYGDIO, CPACT; JANE RODRIGUES DE ASSIS MACHADO, CNPMS. |
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Título: |
Avaliação de cultivares de milho de ciclo precoce para indicação no estado do Rio Grande do Sul - safra 2010-2011. |
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Ano de publicação: |
2011 |
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Fonte/Imprenta: |
Pesquisa Agropecuária Gaúcha, Porto Alegre, v. 17, n. 1, 67-72, 2011. |
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Idioma: |
Português |
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Conteúdo: |
No ano agrícola 2010/2011, 23 cultivares de milho de ciclo precoce foram avaliadas em dez ambientes no Rio Grande do Sul com a finalidade de proceder às indicações para a próxima safra. O delineamento experimental usado foi em blocos casualizados com três repetições, com densidade ajustada para 60.000 plantas ha–1. Com base na produção média das cultivares testemunhas subtraída do desvio padrão, foram indicadas para cultivo no Rio Grande do Sul, após o segundo ano de avaliação, as cultivares ATL 200 (10310 kg ha–1), BM 207 (10162 kg ha–1), CD 388 (9045 kg ha–1), SHX 5550 (8873 kg ha–1), SHS 7770 (10094 kg ha–1), XBX 70202 (10768 kg ha–1) e AG 8025 (10703 kg ha–1). As cultivares cuja produção permitiu alcançar o Índice de Indicação de 100 %, no primeiro ano de avaliação, deverão integrar o ensaio estadual por mais um ano. |
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Thesagro: |
Melhoramento vegetal; Variedade; Zea Mays. |
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Thesaurus Nal: |
Varieties. |
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Categoria do assunto: |
F Plantas e Produtos de Origem Vegetal |
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URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/item/61541/1/Avaliacao-cultivares-3.pdf
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Marc: |
LEADER 01656naa a2200253 a 4500
001 1927354
005 2012-06-29
008 2011 bl uuuu u00u1 u #d
100 1 $aGUADAGNIN, J. P.
245 $aAvaliação de cultivares de milho de ciclo precoce para indicação no estado do Rio Grande do Sul - safra 2010-2011.$h[electronic resource]
260 $c2011
520 $aNo ano agrícola 2010/2011, 23 cultivares de milho de ciclo precoce foram avaliadas em dez ambientes no Rio Grande do Sul com a finalidade de proceder às indicações para a próxima safra. O delineamento experimental usado foi em blocos casualizados com três repetições, com densidade ajustada para 60.000 plantas ha–1. Com base na produção média das cultivares testemunhas subtraída do desvio padrão, foram indicadas para cultivo no Rio Grande do Sul, após o segundo ano de avaliação, as cultivares ATL 200 (10310 kg ha–1), BM 207 (10162 kg ha–1), CD 388 (9045 kg ha–1), SHX 5550 (8873 kg ha–1), SHS 7770 (10094 kg ha–1), XBX 70202 (10768 kg ha–1) e AG 8025 (10703 kg ha–1). As cultivares cuja produção permitiu alcançar o Índice de Indicação de 100 %, no primeiro ano de avaliação, deverão integrar o ensaio estadual por mais um ano.
650 $aVarieties
650 $aMelhoramento vegetal
650 $aVariedade
650 $aZea Mays
700 1 $aRODRIGUES, L. R.
700 1 $aCARGNELUTTI FILHO, A.
700 1 $aEMYGDIO, B. M.
700 1 $aAMES, C. G.
700 1 $aBUZZETTI, D.
700 1 $aSANTOS, F. M. dos
700 1 $aMACHADO, J. R. de A.
773 $tPesquisa Agropecuária Gaúcha, Porto Alegre$gv. 17, n. 1, 67-72, 2011.
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Registro original: |
Embrapa Milho e Sorgo (CNPMS) |
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 | Acesso ao texto completo restrito à biblioteca da Embrapa Agroenergia. Para informações adicionais entre em contato com cnpae.biblioteca@embrapa.br. |
Registro Completo
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Biblioteca(s): |
Embrapa Agroenergia. |
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Data corrente: |
25/09/2013 |
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Data da última atualização: |
21/09/2017 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Circulação/Nível: |
A - 1 |
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Autoria: |
LAVIOLA, B. G.; OLIVEIRA, A. M. C. e.; BHERING, L. L.; ALVES, A. A.; ROCHA, R. B.; GOMES, B. E. L.; CRUZ, C. D. |
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Afiliação: |
BRUNO GALVEAS LAVIOLA, CNPAE; Ana Maria Cruz e Oliveira, Universidade Federal de Viçosa; Leonardo Lopes Bhering, Universidade Federal de Viçosa; ALEXANDRE ALONSO ALVES, CNPAE; RODRIGO BARROS ROCHA, CPAF-RO; Bruno Ermelindo Lopes Gomes, Universidade Federal de Viçosa; Cosme Damião Cruz, Universidade Federal de Viçosa. |
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Título: |
Estimates of repeatability coefficients and selection gains in Jatropha indicate that higher cumulative genetic gains can be obtained by relaxing the degree of certainty in predicting the best families. |
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Ano de publicação: |
2013 |
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Fonte/Imprenta: |
Industrial Crops and Products, v. 51, p. 70-76, 2013. |
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DOI: |
10.1016/j.indcrop.2013.08.016 |
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Idioma: |
Inglês |
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Conteúdo: |
The aim of this study was to estimate the repeatability coefficient of grain production in Jatropha, theminimum number of measurements needed to reliably predict the genetic value of selected families, andto determine the cumulative genetic gains when considering the selection of the best families based ondifferent number of measurements. The experiment was conducted with 175 accessions (half-siblingsprogenies derived from selected plants in the field) that compose part of a germplasm collection. Suchbank was established in a randomized block design with two blocks. In each block a given accession wasrepresented in a 5 plant/plot scheme (half-siblings). For the analysis, yield data obtained in the yearsof 2009?2012 were considered. The results of this study indicate that the repeatability coefficient ofgrain production in Jatropha is low (0.37), but comparable to other perennial species, and that to achievereliabilities of 70 and 80% in the prediction of breeding values of selected families, 4 and 7 years ofevaluation, respectively, are needed. The results of this study also indicate that the efficiency of earlyselection seems to be small in Jatropha since the coincidence rate of selected genotypes at early age (1 or2 years of evaluation) and genotypes selected in adult age (4 years assessment) is small (17?23%). Finally,taking into account the repeatability coefficients and coefficients of determination, in a hypotheticalperiod of 21 years (which is equivalent to three selection cycles using seven consecutive measurements? R2= 80%), this paper demonstrates that higher cumulative genetic gains can be obtained (159% over108%) by relaxing the degree of certainty in predicting the best families (R2= 65% instead of R2= 80%),since it makes possible to perform a greater number of selection cycles in the same period (7 cyclesinstead of 4). MenosThe aim of this study was to estimate the repeatability coefficient of grain production in Jatropha, theminimum number of measurements needed to reliably predict the genetic value of selected families, andto determine the cumulative genetic gains when considering the selection of the best families based ondifferent number of measurements. The experiment was conducted with 175 accessions (half-siblingsprogenies derived from selected plants in the field) that compose part of a germplasm collection. Suchbank was established in a randomized block design with two blocks. In each block a given accession wasrepresented in a 5 plant/plot scheme (half-siblings). For the analysis, yield data obtained in the yearsof 2009?2012 were considered. The results of this study indicate that the repeatability coefficient ofgrain production in Jatropha is low (0.37), but comparable to other perennial species, and that to achievereliabilities of 70 and 80% in the prediction of breeding values of selected families, 4 and 7 years ofevaluation, respectively, are needed. The results of this study also indicate that the efficiency of earlyselection seems to be small in Jatropha since the coincidence rate of selected genotypes at early age (1 or2 years of evaluation) and genotypes selected in adult age (4 years assessment) is small (17?23%). Finally,taking into account the repeatability coefficients and coefficients of determination, in a hypotheticalperiod of 21 years (which is equivalent to three sele... Mostrar Tudo |
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Palavras-Chave: |
Crop energy; Jatropha curcas L; Selection. |
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Thesaurus NAL: |
biodiesel; plant breeding; quantitative genetics. |
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Categoria do assunto: |
-- |
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Marc: |
LEADER 02788naa a2200277 a 4500
001 1967044
005 2017-09-21
008 2013 bl uuuu u00u1 u #d
024 7 $a10.1016/j.indcrop.2013.08.016$2DOI
100 1 $aLAVIOLA, B. G.
245 $aEstimates of repeatability coefficients and selection gains in Jatropha indicate that higher cumulative genetic gains can be obtained by relaxing the degree of certainty in predicting the best families.$h[electronic resource]
260 $c2013
520 $aThe aim of this study was to estimate the repeatability coefficient of grain production in Jatropha, theminimum number of measurements needed to reliably predict the genetic value of selected families, andto determine the cumulative genetic gains when considering the selection of the best families based ondifferent number of measurements. The experiment was conducted with 175 accessions (half-siblingsprogenies derived from selected plants in the field) that compose part of a germplasm collection. Suchbank was established in a randomized block design with two blocks. In each block a given accession wasrepresented in a 5 plant/plot scheme (half-siblings). For the analysis, yield data obtained in the yearsof 2009?2012 were considered. The results of this study indicate that the repeatability coefficient ofgrain production in Jatropha is low (0.37), but comparable to other perennial species, and that to achievereliabilities of 70 and 80% in the prediction of breeding values of selected families, 4 and 7 years ofevaluation, respectively, are needed. The results of this study also indicate that the efficiency of earlyselection seems to be small in Jatropha since the coincidence rate of selected genotypes at early age (1 or2 years of evaluation) and genotypes selected in adult age (4 years assessment) is small (17?23%). Finally,taking into account the repeatability coefficients and coefficients of determination, in a hypotheticalperiod of 21 years (which is equivalent to three selection cycles using seven consecutive measurements? R2= 80%), this paper demonstrates that higher cumulative genetic gains can be obtained (159% over108%) by relaxing the degree of certainty in predicting the best families (R2= 65% instead of R2= 80%),since it makes possible to perform a greater number of selection cycles in the same period (7 cyclesinstead of 4).
650 $abiodiesel
650 $aplant breeding
650 $aquantitative genetics
653 $aCrop energy
653 $aJatropha curcas L
653 $aSelection
700 1 $aOLIVEIRA, A. M. C. e.
700 1 $aBHERING, L. L.
700 1 $aALVES, A. A.
700 1 $aROCHA, R. B.
700 1 $aGOMES, B. E. L.
700 1 $aCRUZ, C. D.
773 $tIndustrial Crops and Products$gv. 51, p. 70-76, 2013.
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Embrapa Agroenergia (CNPAE) |
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