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Registro Completo |
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Biblioteca(s): |
Embrapa Florestas. |
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Data corrente: |
03/08/2011 |
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Data da última atualização: |
03/01/2018 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Autoria: |
FREITAS, R. G.; MISSIO, R. F.; MATOS, F. S.; RESENDE, M. D. V. de; DIAS, L. A. S. |
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Afiliação: |
UFV; UFPR; Universidade Estadual de Goiás; MARCOS DEON VILELA DE RESENDE, CNPF; UFV. |
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Título: |
Genetic evaluation of Jatropha curcas: an important oilseed for biodiesel production. |
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Ano de publicação: |
2011 |
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Fonte/Imprenta: |
Genetics and Molecular Research, Ribeirão Preto, v. 10, n. 3, p. 1490-1498, 2011. |
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Idioma: |
Inglês |
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Conteúdo: |
Jatropha curcas, internationally and locally known, respectively, as physic nut and pinhão manso, is a highly promising species for biodiesel production in Brazil and other countries in the tropics. It is rustic, grows in warm regions and is easily cultivated. These characteristics and high-quality oil yields from the seeds have made this plant a priority for biodiesel programs in Brazil. Consequently, this species merits genetic investigations aimed at improving yields. Some studies have detected genetic variability in accessions in Africa and Asia. We have made the first genetic evaluation of J. curcas collected from Brazil. Our objective was to quantify genetic diversity and to estimate genetic parameters for growth and production traits and seed oil content. We evaluated 75 J. curcas progenies collected from Brazil and three from Cambodia. The mean oil content in the seeds was 31%, ranging from 16 to 45%. No genetic correlation between growth traits and seed oil content was found. However, high coefficients of genetic variation were found for plant height, number of branches, height of branches, and stem diameter. The highest individual narrow-sense heritabilities were found for leaf length (0.35) and width (0.34), stem diameter (0.24) and height of branches (0.21). We used a clustering algorithm to genetically identify the closest and most distant progenies, to assist in the development of new cultivars. Geographical diversity did not necessarily represent the genetic diversity among the accessions collected. These results are important for the continuity of breeding programs, aimed at obtaining cultivars with high grain yield and high oil content in seeds. MenosJatropha curcas, internationally and locally known, respectively, as physic nut and pinhão manso, is a highly promising species for biodiesel production in Brazil and other countries in the tropics. It is rustic, grows in warm regions and is easily cultivated. These characteristics and high-quality oil yields from the seeds have made this plant a priority for biodiesel programs in Brazil. Consequently, this species merits genetic investigations aimed at improving yields. Some studies have detected genetic variability in accessions in Africa and Asia. We have made the first genetic evaluation of J. curcas collected from Brazil. Our objective was to quantify genetic diversity and to estimate genetic parameters for growth and production traits and seed oil content. We evaluated 75 J. curcas progenies collected from Brazil and three from Cambodia. The mean oil content in the seeds was 31%, ranging from 16 to 45%. No genetic correlation between growth traits and seed oil content was found. However, high coefficients of genetic variation were found for plant height, number of branches, height of branches, and stem diameter. The highest individual narrow-sense heritabilities were found for leaf length (0.35) and width (0.34), stem diameter (0.24) and height of branches (0.21). We used a clustering algorithm to genetically identify the closest and most distant progenies, to assist in the development of new cultivars. Geographical diversity did not necessarily represent the genetic d... Mostrar Tudo |
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Palavras-Chave: |
Clustering; Genetic diversity; Oil content. |
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Thesaurus Nal: |
genetic correlation; heritability. |
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Categoria do assunto: |
-- |
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URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/item/39118/1/Deon-GMR-PinhaoManso-1.pdf
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Marc: |
LEADER 02387naa a2200229 a 4500
001 1897234
005 2018-01-03
008 2011 bl uuuu u00u1 u #d
100 1 $aFREITAS, R. G.
245 $aGenetic evaluation of Jatropha curcas$ban important oilseed for biodiesel production.$h[electronic resource]
260 $c2011
520 $aJatropha curcas, internationally and locally known, respectively, as physic nut and pinhão manso, is a highly promising species for biodiesel production in Brazil and other countries in the tropics. It is rustic, grows in warm regions and is easily cultivated. These characteristics and high-quality oil yields from the seeds have made this plant a priority for biodiesel programs in Brazil. Consequently, this species merits genetic investigations aimed at improving yields. Some studies have detected genetic variability in accessions in Africa and Asia. We have made the first genetic evaluation of J. curcas collected from Brazil. Our objective was to quantify genetic diversity and to estimate genetic parameters for growth and production traits and seed oil content. We evaluated 75 J. curcas progenies collected from Brazil and three from Cambodia. The mean oil content in the seeds was 31%, ranging from 16 to 45%. No genetic correlation between growth traits and seed oil content was found. However, high coefficients of genetic variation were found for plant height, number of branches, height of branches, and stem diameter. The highest individual narrow-sense heritabilities were found for leaf length (0.35) and width (0.34), stem diameter (0.24) and height of branches (0.21). We used a clustering algorithm to genetically identify the closest and most distant progenies, to assist in the development of new cultivars. Geographical diversity did not necessarily represent the genetic diversity among the accessions collected. These results are important for the continuity of breeding programs, aimed at obtaining cultivars with high grain yield and high oil content in seeds.
650 $agenetic correlation
650 $aheritability
653 $aClustering
653 $aGenetic diversity
653 $aOil content
700 1 $aMISSIO, R. F.
700 1 $aMATOS, F. S.
700 1 $aRESENDE, M. D. V. de
700 1 $aDIAS, L. A. S.
773 $tGenetics and Molecular Research, Ribeirão Preto$gv. 10, n. 3, p. 1490-1498, 2011.
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Registro original: |
Embrapa Florestas (CNPF) |
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Registro Completo
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Biblioteca(s): |
Embrapa Semiárido. |
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Data corrente: |
05/02/2014 |
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Data da última atualização: |
05/02/2014 |
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Tipo da produção científica: |
Artigo em Anais de Congresso |
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Autoria: |
SOUZA, E. B. de; CORTEZ, J. W.; HONORATO, A. da C.; PATROCINIO FILHO, A. P.; PIMENTA, W. A. |
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Afiliação: |
ELDER BARBOZA DE SOUZA; JORGE WILSON CORTEZ; ALAN DA CUNHA HONORATO; ANTÔNIO PEREIRA PATROCINIO FILHO; WISY ALVES PIMENTA. |
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Título: |
Variabilidade espacial da resistência mecânica do solo à penetração com penetrômetro de impacto. |
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Ano de publicação: |
2013 |
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Fonte/Imprenta: |
In: JORNADA DE INICIAÇÃO CIENTÍFICA DA EMBRAPA SEMIÁRIDO, 8., 2013, Petrolina. Anais... Petrolina: Embrapa Semiárido, 2013. |
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Páginas: |
p. 127-134. |
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Série: |
(Embrapa Semiárido. Documentos, 253). |
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Idioma: |
Português |
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Conteúdo: |
O trabalho teve como objetivo avaliar a variabilidade espacial da resistência mecânica do solo à penetração (RP) utilizando-se o penetrômetro de impacto. O experimento foi desenvolvido no Campus de Ciências Agrárias, da Universidade Federal do Vale do São Francisco (Univasf), em Petrolina, PE. Para tanto, utilizou-se o penetrômetro de impacto modelo IAA/Planalsucar-Stolf. Os pontos de coleta foram espacializados em malha regular de 25x25 m, sendo avaliada a RP nas camadas 0-0,10 m; 0,10-0,20 m; 0,20-0,30 m; 0,30-0,40 m e 0,40-0,50 m no perfil do solo. Os dados foram submetidos à análise estatística descritiva e à análise de semivariância para confecção de mapas bidimensionais para cada camada. Houve aumento da RP média da camada 0,0-0,10 m até a camada de 0,20-0,30 m, decrescendo nas camadas subsequentes. O grau de dependência espacial para RP foi classificado como forte e moderado. O alcance apresentou elevada amplitude nas camadas avaliadas com mínimo de 15,3 m na camada 0,10-0,20 m e máximo de 82,1 m na camada de 0,40-0,50 m. |
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Palavras-Chave: |
Geoestatística; Natural resource. |
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Thesagro: |
Compactação do Solo; Mecanização Agrícola; Recurso natural; Solo. |
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Thesaurus NAL: |
Soil. |
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Categoria do assunto: |
P Recursos Naturais, Ciências Ambientais e da Terra |
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URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/item/96421/1/SDC253.pdf-16.pdf
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Marc: |
LEADER 01960nam a2200265 a 4500
001 1978622
005 2014-02-05
008 2013 bl uuuu u00u1 u #d
100 1 $aSOUZA, E. B. de
245 $aVariabilidade espacial da resistência mecânica do solo à penetração com penetrômetro de impacto.$h[electronic resource]
260 $aIn: JORNADA DE INICIAÇÃO CIENTÍFICA DA EMBRAPA SEMIÁRIDO, 8., 2013, Petrolina. Anais... Petrolina: Embrapa Semiárido$c2013
300 $ap. 127-134.
490 $a(Embrapa Semiárido. Documentos, 253).
520 $aO trabalho teve como objetivo avaliar a variabilidade espacial da resistência mecânica do solo à penetração (RP) utilizando-se o penetrômetro de impacto. O experimento foi desenvolvido no Campus de Ciências Agrárias, da Universidade Federal do Vale do São Francisco (Univasf), em Petrolina, PE. Para tanto, utilizou-se o penetrômetro de impacto modelo IAA/Planalsucar-Stolf. Os pontos de coleta foram espacializados em malha regular de 25x25 m, sendo avaliada a RP nas camadas 0-0,10 m; 0,10-0,20 m; 0,20-0,30 m; 0,30-0,40 m e 0,40-0,50 m no perfil do solo. Os dados foram submetidos à análise estatística descritiva e à análise de semivariância para confecção de mapas bidimensionais para cada camada. Houve aumento da RP média da camada 0,0-0,10 m até a camada de 0,20-0,30 m, decrescendo nas camadas subsequentes. O grau de dependência espacial para RP foi classificado como forte e moderado. O alcance apresentou elevada amplitude nas camadas avaliadas com mínimo de 15,3 m na camada 0,10-0,20 m e máximo de 82,1 m na camada de 0,40-0,50 m.
650 $aSoil
650 $aCompactação do Solo
650 $aMecanização Agrícola
650 $aRecurso natural
650 $aSolo
653 $aGeoestatística
653 $aNatural resource
700 1 $aCORTEZ, J. W.
700 1 $aHONORATO, A. da C.
700 1 $aPATROCINIO FILHO, A. P.
700 1 $aPIMENTA, W. A.
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Embrapa Semiárido (CPATSA) |
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