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Registro Completo |
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Biblioteca(s): |
Embrapa Arroz e Feijão. |
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Data corrente: |
26/10/2004 |
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Data da última atualização: |
27/10/2004 |
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Autoria: |
SILVA, M de A.; GONÇALVES, P. de S.; LANDELL, M. G. de A.; BRESSIANI, J. A. |
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Título: |
Estimates of genetic parameters and expected gains from selection of yield traits in sugarcane families. |
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Ano de publicação: |
2002 |
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Fonte/Imprenta: |
Crop Breeding and Applied Biotechnology, Londrina, v. 2, n. 4, p. 569-577, Dec. 2002. |
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Idioma: |
Inglês |
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Conteúdo: |
It is essential to have basic information on the genetic nature of variation of various metric traits in plantation crops for the proper planning of breeding strategies. The objective of this paper was to estimate the variability for five yield traits in sugarcane (Saccharum spp.) families. Eighteen controlled pollination families were evaluated in a randomized complete block trial having 16 plants per linear plot at Jaú Development and Research Station (DDD/APTA/SAA), in Jau city, São Paulo State, Brazil. In the second year, families were assessed and harvested six months after the first ratoon, and evaluated for the following characters stalk height, stalk diameter, average Brix, stalk number and stalk weight. The results showed highly signiticant (p<0.01) genetic differences among families for most traits. The genotypic variance component accounted for 4.27, 3.55, 15.87, 3.32 and 51.68% of the phenotypic variance for stalk height, stalk number, stalk diameter, stalk weight and average Brix, respectively. Negative significant genotypic and phenotypic correlations were found between Brix and stalk height (rg= -0.78**, rp= -0.56**) and stalk diameter (rg=-0.81**, rg= -0.75%). Selecting the best two families out of 18 families would result in a genetic gain of 4.92% and 10.82% for stalk height and stalk diameter, respectively. The best two selected individual seedlings within each family would result in a genetic gain of 18.61% and 16.94% with a total gain of 23.57% and 27.76% for these traits, respectively. MenosIt is essential to have basic information on the genetic nature of variation of various metric traits in plantation crops for the proper planning of breeding strategies. The objective of this paper was to estimate the variability for five yield traits in sugarcane (Saccharum spp.) families. Eighteen controlled pollination families were evaluated in a randomized complete block trial having 16 plants per linear plot at Jaú Development and Research Station (DDD/APTA/SAA), in Jau city, São Paulo State, Brazil. In the second year, families were assessed and harvested six months after the first ratoon, and evaluated for the following characters stalk height, stalk diameter, average Brix, stalk number and stalk weight. The results showed highly signiticant (p<0.01) genetic differences among families for most traits. The genotypic variance component accounted for 4.27, 3.55, 15.87, 3.32 and 51.68% of the phenotypic variance for stalk height, stalk number, stalk diameter, stalk weight and average Brix, respectively. Negative significant genotypic and phenotypic correlations were found between Brix and stalk height (rg= -0.78**, rp= -0.56**) and stalk diameter (rg=-0.81**, rg= -0.75%). Selecting the best two families out of 18 families would result in a genetic gain of 4.92% and 10.82% for stalk height and stalk diameter, respectively. The best two selected individual seedlings within each family would result in a genetic gain of 18.61% and 16.94% with a total gain of 23.57% and 27.76... Mostrar Tudo |
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Palavras-Chave: |
Cana-de-açúcar; Genetic correlations; Saccharum spp; Selection; Variabilidade genética. |
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Thesaurus Nal: |
genetic variation; heritability; sugarcane. |
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Categoria do assunto: |
-- |
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Marc: |
LEADER 02312naa a2200253 a 4500
001 1212626
005 2004-10-27
008 2002 bl uuuu u00u1 u #d
100 1 $aSILVA, M de A.
245 $aEstimates of genetic parameters and expected gains from selection of yield traits in sugarcane families.
260 $c2002
520 $aIt is essential to have basic information on the genetic nature of variation of various metric traits in plantation crops for the proper planning of breeding strategies. The objective of this paper was to estimate the variability for five yield traits in sugarcane (Saccharum spp.) families. Eighteen controlled pollination families were evaluated in a randomized complete block trial having 16 plants per linear plot at Jaú Development and Research Station (DDD/APTA/SAA), in Jau city, São Paulo State, Brazil. In the second year, families were assessed and harvested six months after the first ratoon, and evaluated for the following characters stalk height, stalk diameter, average Brix, stalk number and stalk weight. The results showed highly signiticant (p<0.01) genetic differences among families for most traits. The genotypic variance component accounted for 4.27, 3.55, 15.87, 3.32 and 51.68% of the phenotypic variance for stalk height, stalk number, stalk diameter, stalk weight and average Brix, respectively. Negative significant genotypic and phenotypic correlations were found between Brix and stalk height (rg= -0.78**, rp= -0.56**) and stalk diameter (rg=-0.81**, rg= -0.75%). Selecting the best two families out of 18 families would result in a genetic gain of 4.92% and 10.82% for stalk height and stalk diameter, respectively. The best two selected individual seedlings within each family would result in a genetic gain of 18.61% and 16.94% with a total gain of 23.57% and 27.76% for these traits, respectively.
650 $agenetic variation
650 $aheritability
650 $asugarcane
653 $aCana-de-açúcar
653 $aGenetic correlations
653 $aSaccharum spp
653 $aSelection
653 $aVariabilidade genética
700 1 $aGONÇALVES, P. de S.
700 1 $aLANDELL, M. G. de A.
700 1 $aBRESSIANI, J. A.
773 $tCrop Breeding and Applied Biotechnology, Londrina$gv. 2, n. 4, p. 569-577, Dec. 2002.
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Registro original: |
Embrapa Arroz e Feijão (CNPAF) |
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| Registros recuperados : 193 | |
| 81. |  | MARTINS, M. A.; MORENO, R. M. B.; GONÇALVES, P. de S.; MATTOSO, L. H. C. Thermooxidative study of raw natural rubber from IAC series 300 clones. In: MACRO 2006; WORLD POLYMER CONGRESS, Rio de Janeiro, Brazil; INTERNATIONAL SYMPOSIUM ON MACROMOLECULES, 41ST., 2006, Rio de Janeiro. Proceedings... [S. l.]: ABPol, 2006. 1 CD-ROM.| Biblioteca(s): Embrapa Instrumentação. |
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| 82. | | GONCALVES, P. de S.; MARTINS, A. L. M.; BORTOLETTO, N.; UTIDA, R. de C. Variabilidade dos caracteres estruturais do sistema laticífero da casca em plantas jovens de seringueira. Pesquisa Agropecuária Brasileira, Brasília, DF, v. 30, n. 5, p. 649-656, maio 1995. Título em inglês: Variability of the structural characters of the bark in the laticiferous system of the juvenile hevea seedling.| Biblioteca(s): Embrapa Unidades Centrais. |
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| 87. | | VERARDI, C. K.; RESENDE, M. D. V. de; COSTA, R. B. da; GONCALVES, P. de S. Estimativas de parâmetros genéticos, estabilidade e adaptabilidade para produção de borracha em progênies de Hevea brasiliensis. In: CONGRESSO BRASILEIRO DE MELHORAMENTO DE PLANTAS, 5., 2009, Guarapari. O melhoramento e os novos cenários da agricultura: anais. Vitória: SBMP: Incaper, 2009. 4 p. CD-ROM. (INCAPER. Documentos, 11).| Tipo: Artigo em Anais de Congresso / Nota Técnica |
| Biblioteca(s): Embrapa Florestas. |
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| 88. | | MORETI, D.; GONÇALVES, P. de S.; GORGULHO, E. P.; MARTINS, A. L. M.; BORTOLETTO, N. Estimativas de parâmetros genéticos e ganhos esperados com a seleção de caracteres juvenis em progênies de seringueira. Pesquisa Agropecuária Brasileira, Brasília, DF, v. 29, n. 7, p. 1099-1109. jul. 1994. Título em inglês: Estimates of genetic parameters and gains expected from selection of juvenile characters in rubber tree progenies .| Biblioteca(s): Embrapa Unidades Centrais. |
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| 89. | | VERARDI, C. K.; RESENDE, M. D. V. de; COSTA, R. B. da; GONÇALVES, P. de S. Estimation of genetic parameters in rubber progenies. Crop Breeding and Applied Biotechnology, Viçosa, MG, v. 12, n. 3, p. 185-190, Sept. 2012.| Tipo: Artigo em Periódico Indexado | Circulação/Nível: B - 1 |
| Biblioteca(s): Embrapa Florestas. |
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| 91. | | GONCALVES, P. de S.; MARTINS, A. L. M.; GORGULHO, E. P.; BORTOLETTO, N.; BERMOND, G. Influência de seis porta-enxertos no crescimento de seis clones de seringueira uma avaliação preliminar. Pesquisa Agropecuária Brasileira, Brasília, DF, v. 29, n. 4, p. 553-560, abr. 1994. Título em inglês: Influence of six rootstocks on growth of six scion clones of rubber tree a preliminary report.| Biblioteca(s): Embrapa Unidades Centrais. |
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| 93. | | MARTINS, A. L. M.; RAMOS, N. P.; GONCALVES, P. de S.; VAL, K. S. do. Influência de porta-enxertos no crescimento de clones de seringueira no Estado de São Paulo. Pesquisa Agropecuária Brasileira, Brasília, DF, v. 35, n. 9, p. 1743-50, set. 2000. Título em inglês: Influence of rootstocks on scion growth of rubber tree in São Paulo State, Brazil.| Biblioteca(s): Embrapa Unidades Centrais. |
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| Registros recuperados : 193 | |
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