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Registro Completo |
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Biblioteca(s): |
Embrapa Unidades Centrais. |
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Data corrente: |
02/07/2013 |
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Data da última atualização: |
14/06/2017 |
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Autoria: |
VERARDI, C. K.; SCALOPPI JUNIOR, E. J.; SILVA, G. A P.; GOUVÊA, L. R. L.; GONÇALVES, P. de S. |
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Afiliação: |
Cecília Khusala Verardi, Instituto Agronômico; Erivaldo José Scaloppi Junior, Agência Paulista de Tecnologia dos Agronegócios, Departamento de Descentralização do Desenvolvimento, Polo Regional Noroeste Paulista; Guilherme Augusto Peres Silva, Instituto Agronômico; Lígia Regina Lima Gouvêa, Instituto Agronômico; Paulo de Souza Gonçalves, Instituto Agronômico. |
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Título: |
Genetic parameters and estimated genetic gains in young rubber tree progenies. |
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Ano de publicação: |
2013 |
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Fonte/Imprenta: |
Pesquisa Agropecuária Brasileira, Brasília, DF, v. 48, n. 4, p. 411-416, abr. 2013. |
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Idioma: |
Inglês |
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Notas: |
Título em português: Parâmetros genéticos e ganhos de seleção estimados em progênies jovens de seringueira. |
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Conteúdo: |
The objective of this work was to assess the genetic parameters and to estimate genetic gains in young rubber tree progenies. The experiments were carried out during three years, in a randomized block design, with six replicates and ten plants per plot, in three representative Hevea crop regions of the state of São Paulo, Brazil. Twenty?two progenies were evaluated, from three to five years old, for rubber yield and annual girth growth. Genetic gain was estimated with the multi?effect index (MEI). Selection by progenies means provided greater estimated genetic gain than selection based on individuals, since heritability values of progeny means were greater than the ones of individual heritability, for both evaluated variables, in all the assessment years. The selection of the three best progenies for rubber yield provided a selection gain of 1.28 g per plant. The genetic gains estimated with MEI using data from early assessments (from 3 to 5?year?old) were generally high for annual girth growth and rubber yield. The high genetic gains for annual girth growth in the first year of assessment indicate that progenies can be selected at the beginning of the breeding program. Population effective size was consistent with the three progenies selected, showing that they were not related and that the population genetic variability is ensured. Early selection with the genetic gains estimated by MEI can be made on rubber tree progenies |
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Palavras-Chave: |
Annual girth growth; Crescimento anual do caule; Effective population size; Eleção precoce; Índice multiefeito; Multi-effect index; Produção de borracha; Tamanho efetivo populacional. |
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Thesagro: |
Hevea Brasiliensis. |
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Thesaurus Nal: |
Early selection. |
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Categoria do assunto: |
-- |
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URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/item/85311/1/Genetic-paameters.pdf
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Marc: |
LEADER 02485naa a2200301 a 4500
001 1961175
005 2017-06-14
008 2013 bl uuuu u00u1 u #d
100 1 $aVERARDI, C. K.
245 $aGenetic parameters and estimated genetic gains in young rubber tree progenies.
260 $c2013
500 $aTítulo em português: Parâmetros genéticos e ganhos de seleção estimados em progênies jovens de seringueira.
520 $aThe objective of this work was to assess the genetic parameters and to estimate genetic gains in young rubber tree progenies. The experiments were carried out during three years, in a randomized block design, with six replicates and ten plants per plot, in three representative Hevea crop regions of the state of São Paulo, Brazil. Twenty?two progenies were evaluated, from three to five years old, for rubber yield and annual girth growth. Genetic gain was estimated with the multi?effect index (MEI). Selection by progenies means provided greater estimated genetic gain than selection based on individuals, since heritability values of progeny means were greater than the ones of individual heritability, for both evaluated variables, in all the assessment years. The selection of the three best progenies for rubber yield provided a selection gain of 1.28 g per plant. The genetic gains estimated with MEI using data from early assessments (from 3 to 5?year?old) were generally high for annual girth growth and rubber yield. The high genetic gains for annual girth growth in the first year of assessment indicate that progenies can be selected at the beginning of the breeding program. Population effective size was consistent with the three progenies selected, showing that they were not related and that the population genetic variability is ensured. Early selection with the genetic gains estimated by MEI can be made on rubber tree progenies
650 $aEarly selection
650 $aHevea Brasiliensis
653 $aAnnual girth growth
653 $aCrescimento anual do caule
653 $aEffective population size
653 $aEleção precoce
653 $aÍndice multiefeito
653 $aMulti-effect index
653 $aProdução de borracha
653 $aTamanho efetivo populacional
700 1 $aSCALOPPI JUNIOR, E. J.
700 1 $aSILVA, G. A P.
700 1 $aGOUVÊA, L. R. L.
700 1 $aGONÇALVES, P. de S.
773 $tPesquisa Agropecuária Brasileira, Brasília, DF$gv. 48, n. 4, p. 411-416, abr. 2013.
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Embrapa Unidades Centrais (AI-SEDE) |
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