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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. |
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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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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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Registro original: |
Embrapa Agroenergia (CNPAE) |
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Biblioteca |
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Registro Completo
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Biblioteca(s): |
Embrapa Semiárido. |
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Data corrente: |
18/08/2009 |
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Data da última atualização: |
27/01/2023 |
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Tipo da produção científica: |
Artigo em Anais de Congresso / Nota Técnica |
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Autoria: |
ARAÚJO, A. J. B.; AZEVÊDO, L. C.; COSTA, F. F. P.; AZOUBEL, P. M. |
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Afiliação: |
A. J. B. ARAÚJO, INSTITUTO FEDERAL DE EDUCAÇÃO, CIÊNCIA E TECNOLOGIA DO SERTÃO PERNAMBUCANO; L. C. AZEVEDO, INSTITUTO FEDERAL DE EDUCAÇÃO, CIÊNCIA E TECNOLOGIA DO SERTÃO PERNAMBUCANO; F. F. P. COSTA, INSTITUTO FEDERAL DE EDUCAÇÃO, CIÊNCIA E TECNOLOGIA DO SERTÃO PERNAMBUCANO; PATRICIA MOREIRA AZOUBEL, CPATSA. |
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Título: |
Caracterização físico-química da polpa de maracujá do mato. |
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Ano de publicação: |
2009 |
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Fonte/Imprenta: |
In: ENCONTRO NACIONAL DE ANALISTAS DE ALIMENTOS - ENAAL, 16.; CONGRESSO LATINO-AMERICANO DE ANALISTAS DE ALIMENTOS, 2., 2009, Belo Horizonte. Alimento seguro: desafios da intersetorialidade. São Paulo: SBAAL, 2009. |
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Descrição Física: |
1 CD-ROM. |
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Idioma: |
Português |
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Conteúdo: |
Determinar as características físico-químicas da polpa do maracujá do mato (Passiflora cincinnata Mast.), com intuito de fornecer subsídios para o desenvolvimento científico dessa espécie e divulgar o potencial nutricional desse fruto nativo da região semi-árido do Nordeste brasileiro. |
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Palavras-Chave: |
Maracujá do mato. |
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Thesagro: |
Polpa; Produção. |
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Thesaurus NAL: |
Pulp. |
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Categoria do assunto: |
A Sistemas de Cultivo |
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URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/CPATSA-2009-09/41167/1/OPB2428.pdf
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Marc: |
LEADER 01005nam a2200205 a 4500
001 1256847
005 2023-01-27
008 2009 bl uuuu u00u1 u #d
100 1 $aARAÚJO, A. J. B.
245 $aCaracterização físico-química da polpa de maracujá do mato.
260 $aIn: ENCONTRO NACIONAL DE ANALISTAS DE ALIMENTOS - ENAAL, 16.; CONGRESSO LATINO-AMERICANO DE ANALISTAS DE ALIMENTOS, 2., 2009, Belo Horizonte. Alimento seguro: desafios da intersetorialidade. São Paulo: SBAAL$c2009
300 $c1 CD-ROM.
520 $aDeterminar as características físico-químicas da polpa do maracujá do mato (Passiflora cincinnata Mast.), com intuito de fornecer subsídios para o desenvolvimento científico dessa espécie e divulgar o potencial nutricional desse fruto nativo da região semi-árido do Nordeste brasileiro.
650 $aPulp
650 $aPolpa
650 $aProdução
653 $aMaracujá do mato
700 1 $aAZEVÊDO, L. C.
700 1 $aCOSTA, F. F. P.
700 1 $aAZOUBEL, P. M.
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