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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 : 3 | |
| 1. |  | BARBOSA, M. H. P.; RESENDE, M. D. V. de; BRESSIANI, J. A.; SILVEIRA, L. C. I. da; PETERNELLI, L. A. Selection of sugarcane families and parents by Reml/Blup. Crop Breeding and Applied Biotechnology, Viçosa, MG, v. 5, p. 443-450, 2005.| Tipo: Artigo em Periódico Indexado | Circulação/Nível: Internacional - A |
| Biblioteca(s): Embrapa Florestas. |
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| 2. | | BOSCHIERO, B. N.; CASTRO, S. G. Q. de; CRUZ, L. P. da; CARVALHO, J. L. N.; SILVA, S. R.; BRESSIANI, J. A.; KÖLLN, O. T. Biomass yield, nutrient removal, and chemical composition of energy cane genotypes in Southeast Brazil. Industrial Crops and Products, v. 191, 115993, Jan. 2023.| Tipo: Artigo em Periódico Indexado | Circulação/Nível: A - 1 |
| Biblioteca(s): Embrapa Florestas. |
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| 3. | | BARBOSA, M. H. P.; RESENDE, M. D. V. de; PETERNELLI, L. A.; BRESSIANI, J. A.; SILVEIRA, L. C. I. da; SILVA, F. L. da; FIGUEIREDO, I. C. R. de. Use of REML/BLUP for the selection of sugarcane families specialized in biomass production. Crop Breeding and Applied Biotechnology, Viçosa, MG, v. 4, n. 2, p. 218-226, jun. 2004.| Biblioteca(s): Embrapa Florestas. |
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| Registros recuperados : 3 | |
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| Nenhum registro encontrado para a expressão de busca informada. |
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