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Registro Completo |
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Biblioteca(s): |
Embrapa Arroz e Feijão. |
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Data corrente: |
19/08/2005 |
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Data da última atualização: |
06/10/2005 |
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Autoria: |
GONÇALVES, P. de S.; BORTOLETTO, N.; COSTA, R. B. da; SILVA, M. de A.; CARDINAL, A. B. B.; GOUVÊA, L. R. L. |
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Título: |
Estimates of annual genetic parameters and expected gains in the second cycle of Hevea genotype selection. |
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Ano de publicação: |
2005 |
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Fonte/Imprenta: |
Crop Breeding and Applied Biotechnology, Viçosa, MG, v. 5, n. 1, p. 55-63, Mar. 2005. |
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Idioma: |
Inglês |
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Conteúdo: |
Genetic parameters and expected gains with selection were estimated for 13 years of girth and six years of rubber yield in 25 rubber (Hevea brasiliensis) tree genotypes, selected in the northwestern region of Sao Paulo state, Brazil. There were significant differences among genotypes for both the girth growth and annual rubber yield measurements. A decrease of heritability values with increasing tree age was observed. Heritabilities for annual girth growth on the single plot basis varied from hp2=0.45 in the 13 to hp2=0.75 in the third year. For annual rubber yields, the values ranged from hp2=0.60 to hp2=0.80 in the fourth and third year, respectively. The amounts of genetic and phenotypic variation indicate that moderate gain from selection is possible in breeding programmes for annual girth growth while smaller gains can be achieved for annual rubber yield. Genotypic and phenotypic correlation coefficients were generally higher between relatively close ages.
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Palavras-Chave: |
Broad-sense heritability; Correlação genética; Ganhos genéticos; Genetic gains; Herdabilidades no sentido amplo. |
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Thesagro: |
Hevea Brasiliensis; Seringueira. |
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Thesaurus Nal: |
genetic correlation. |
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Categoria do assunto: |
-- |
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Marc: |
LEADER 01853naa a2200277 a 4500
001 1213582
005 2005-10-06
008 2005 bl uuuu u00u1 u #d
100 1 $aGONÇALVES, P. de S.
245 $aEstimates of annual genetic parameters and expected gains in the second cycle of Hevea genotype selection.
260 $c2005
520 $aGenetic parameters and expected gains with selection were estimated for 13 years of girth and six years of rubber yield in 25 rubber (Hevea brasiliensis) tree genotypes, selected in the northwestern region of Sao Paulo state, Brazil. There were significant differences among genotypes for both the girth growth and annual rubber yield measurements. A decrease of heritability values with increasing tree age was observed. Heritabilities for annual girth growth on the single plot basis varied from hp2=0.45 in the 13 to hp2=0.75 in the third year. For annual rubber yields, the values ranged from hp2=0.60 to hp2=0.80 in the fourth and third year, respectively. The amounts of genetic and phenotypic variation indicate that moderate gain from selection is possible in breeding programmes for annual girth growth while smaller gains can be achieved for annual rubber yield. Genotypic and phenotypic correlation coefficients were generally higher between relatively close ages.
650 $agenetic correlation
650 $aHevea Brasiliensis
650 $aSeringueira
653 $aBroad-sense heritability
653 $aCorrelação genética
653 $aGanhos genéticos
653 $aGenetic gains
653 $aHerdabilidades no sentido amplo
700 1 $aBORTOLETTO, N.
700 1 $aCOSTA, R. B. da
700 1 $aSILVA, M. de A.
700 1 $aCARDINAL, A. B. B.
700 1 $aGOUVÊA, L. R. L.
773 $tCrop Breeding and Applied Biotechnology, Viçosa, MG$gv. 5, n. 1, p. 55-63, Mar. 2005.
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Registro original: |
Embrapa Arroz e Feijão (CNPAF) |
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| Registros recuperados : 6 | |
| 2. |  | GOUVÊA, L. R. L.; SILVA, G. A. P.; JUNIOR, E. J. S.; GONÇALVES, P. de S. Different methods to assess yield temporal stability in rubber. Pesquisa Agropecuária Brasileira, Brasília, DF, v. 46, n. 5, p. 491-498, maio 2011 Título em português: Diferentes métodos para avaliar a estabilidade temporal do rendimento em seringueira.| Biblioteca(s): Embrapa Unidades Centrais. |
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| 3. | | SANT'ANNA, I. C.; GOUVÊA, L. R. L.; MARTINS, M. A.; SCALOPPI JUNIOR, E. J.; FREITAS, R. S.; GONÇALVES, P. S. Genetic diversity associated with natural rubber quality in elite genotypes of the rubber tree. ScientifIc Reports, v. 11, ed. 1, 1081, 2021. 1 - 10| Tipo: Artigo em Periódico Indexado | Circulação/Nível: A - 1 |
| Biblioteca(s): Embrapa Instrumentação. |
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| 4. | | VERARDI, C. K.; SCALOPPI JUNIOR, E. J.; SILVA, G. A P.; GOUVÊA, L. R. L.; GONÇALVES, P. de S. Genetic parameters and estimated genetic gains in young rubber tree progenies. Pesquisa Agropecuária Brasileira, Brasília, DF, v. 48, n. 4, p. 411-416, abr. 2013. Título em português: Parâmetros genéticos e ganhos de seleção estimados em progênies jovens de seringueira.| Biblioteca(s): Embrapa Unidades Centrais. |
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| 6. | | SILVA, J. Q.; SOUZA, M. I. T. de; GONÇALVES, P. de S.; AGUIAR, A. T. da E.; GOUVÊA, L. R. L.; PINOTTI, R. N. Viabilidade econômica de diferentes sistemas de sangria em clones de seringueira. Pesquisa Agropecuária Brasileira, Brasília, DF, v. 42, n. 3, p. 349-356, mar. 2007 Título em inglês: Economic viability of different tapping systems in rubber tree clones.| Biblioteca(s): Embrapa Unidades Centrais. |
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| Registros recuperados : 6 | |
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| Nenhum registro encontrado para a expressão de busca informada. |
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