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 | Acesso ao texto completo restrito à biblioteca da Embrapa Mandioca e Fruticultura. Para informações adicionais entre em contato com cnpmf.biblioteca@embrapa.br. |
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Registro Completo |
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Biblioteca(s): |
Embrapa Mandioca e Fruticultura. |
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Data corrente: |
05/11/2014 |
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Data da última atualização: |
26/05/2023 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Autoria: |
NEVES, C. G.; FREITAS, J. P. X. de; CRUZ NETO, A. J. da; SANTOS, L. R. dos; JESUS, O. N. de; LEDO, C. A. da S.; OLIVEIRA, E. J. de. |
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Afiliação: |
CLÁUDIA GARCIA NEVES, UFRB; JUAN PAULO XAVIER DE FREITAS, UFRB; ALÍRIO JOSÉ DA CRUZ NETO, UFRB; LEANDRO RIBEIRO DOS SANTOS, UFRB; ONILDO NUNES DE JESUS, CNPMF; CARLOS ALBERTO DA SILVA LEDO, CNPMF; EDER JORGE DE OLIVEIRA, CNPMF. |
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Título: |
Capacidade de combinação e heterose em maracujazeiro amarelo. |
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Ano de publicação: |
2014 |
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Fonte/Imprenta: |
Bioscience Journal, Uberlandia, v. 30, supplement 2, p. 757-767, October, 2014. |
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ISSN: |
1981-3163 |
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Idioma: |
Português |
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Conteúdo: |
O objetivo deste trabalho foi determinar a capacidade geral (CGC) e específica (CEC) de combinação, bem como a heterose relacionada à produtividade e qualidade de frutos de maracujazeiro amarelo. Onze parentais foram cruzados em esquema de dialelo parcial (6 x 5). Os parentais e seus híbridos foram avaliados para as características: produtividade (PROD); número de frutos por parcela (NF); massa média de frutos (MF); rendimento de suco (REND); produtividade de suco (PRSUC) e teor de sólidos solúveis totais (SST). Foram observadas diferenças significativas para CGC, apenas dentro do grupo de parentais para todas as características, à exceção de PROD. Por outro lado, para CEC observou-se diferença significativa para todas as características. Dentre os componentes heteróticos, a heterose específica apresentou-se como mais expressiva, indicando presença de dominância e divergência genética entre alguns parentais dos dois grupos. Observou-se que os híbridos com maior heterose não foram os de maior média para a maioria das características. Como as interações que envolvem efeitos dominantes não são herdáveis, depreende-se que a exploração do uso de híbridos é uma estratégia viável no maracujazeiro amarelo, considerando a maioria das características relacionadas ao potencial produtivo e de qualidade de frutos. |
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Palavras-Chave: |
Dialelo parcial; Efeitos gênicos. |
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Thesagro: |
Maracujá; Passiflora edulis; Reprodução vegetal. |
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Categoria do assunto: |
-- |
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Marc: |
LEADER 02145naa a2200265 a 4500
001 1999227
005 2023-05-26
008 2014 bl uuuu u00u1 u #d
022 $a1981-3163
100 1 $aNEVES, C. G.
245 $aCapacidade de combinação e heterose em maracujazeiro amarelo.$h[electronic resource]
260 $c2014
520 $aO objetivo deste trabalho foi determinar a capacidade geral (CGC) e específica (CEC) de combinação, bem como a heterose relacionada à produtividade e qualidade de frutos de maracujazeiro amarelo. Onze parentais foram cruzados em esquema de dialelo parcial (6 x 5). Os parentais e seus híbridos foram avaliados para as características: produtividade (PROD); número de frutos por parcela (NF); massa média de frutos (MF); rendimento de suco (REND); produtividade de suco (PRSUC) e teor de sólidos solúveis totais (SST). Foram observadas diferenças significativas para CGC, apenas dentro do grupo de parentais para todas as características, à exceção de PROD. Por outro lado, para CEC observou-se diferença significativa para todas as características. Dentre os componentes heteróticos, a heterose específica apresentou-se como mais expressiva, indicando presença de dominância e divergência genética entre alguns parentais dos dois grupos. Observou-se que os híbridos com maior heterose não foram os de maior média para a maioria das características. Como as interações que envolvem efeitos dominantes não são herdáveis, depreende-se que a exploração do uso de híbridos é uma estratégia viável no maracujazeiro amarelo, considerando a maioria das características relacionadas ao potencial produtivo e de qualidade de frutos.
650 $aMaracujá
650 $aPassiflora edulis
650 $aReprodução vegetal
653 $aDialelo parcial
653 $aEfeitos gênicos
700 1 $aFREITAS, J. P. X. de
700 1 $aCRUZ NETO, A. J. da
700 1 $aSANTOS, L. R. dos
700 1 $aJESUS, O. N. de
700 1 $aLEDO, C. A. da S.
700 1 $aOLIVEIRA, E. J. de
773 $tBioscience Journal, Uberlandia$gv. 30, supplement 2, p. 757-767, October, 2014.
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Registro original: |
Embrapa Mandioca e Fruticultura (CNPMF) |
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Registro Completo
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Biblioteca(s): |
Embrapa Café. |
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Data corrente: |
21/01/2022 |
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Data da última atualização: |
21/01/2022 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Circulação/Nível: |
A - 1 |
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Autoria: |
CASTRO, C. A. de O.; SANTOS, G. A. dos; TAKAHASHI, E. K.; NUNES, A. C. P.; SOUZA, G. A.; RESENDE, M. D. V. de. |
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Afiliação: |
CARLA APARECIDA DE OLIVEIRA CASTRO, SOUTH CAROLINA FORESTRY COMMISSION; GLEISON AUGUSTO DOS SANTOS, UFV; ELIZABETE KEIKO TAKAHASHI, CELULOSE NIPO-BRASILEIRA - CENIBRA; ANDREI CAIQUE PIRES NUNES, UFSB; GENAINA APARECIDA SOUZA, UFV; MARCOS DEON VILELA DE RESENDE, CNPCa. |
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Título: |
Accelerating Eucalyptus breeding strategies through top grafting applied to young seedlings. |
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Ano de publicação: |
2021 |
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Fonte/Imprenta: |
Industrial Crops and Products, v. 171, n. 1, 113906, 2021. |
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DOI: |
https://doi.org/10.1016/j.indcrop.2021.113906 |
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Idioma: |
Inglês |
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Conteúdo: |
The genetic improvement of tree species takes time. The breeding cycles are long and this makes the process difficult. However, the selection and recombination cycles can be reduced considerably by speeding up the recommendation of new clones using a top grafting method in young seedlings. Eucalyptus top grafting is very promising since this graft technique can induce ultra-early flowering, making the use of the Genome-Wide Selection effective. Thus, the aim of this study was to establish a standard methodology for top grafting of young seedlings in order to enable flowering in Eucalyptus progenies. In this sense, 384 top graftings were performed with seedlings originating from 3 different crossings among Eucalyptus urophylla S.T. Blake and Eucalyptus grandis W. Hill ex Maiden species. The progenies? seeds from each crossing were separated, sown, and conducted as seedlings until they reached 60?90 days and 150?180 days of development. The graftings were performed at two different periods of the year: July and October (six and three months before the natural flowering of the species). In addition to the mentioned effects, the efficiency of paclobutrazol in stimulating flowering was analyzed from its application on each rootstock genotype. At three-month intervals, the live top grafting samples were evaluated on flower production (bud and fruit account) and scion development (survival rate and canopy area measurement). The differences between treatments and the interactions were detected using variance analysis and the Scott-Knott test (p-value< 0.05). Top grafting proved to be effective in inducing very early flowering in Eucalyptus, as it produced enough flower buds to carry out the next recombination cycle in progenies of the crossing between Eucalyptus urophylla × Eucalyptus grandis. The flowering was observed three months after the graft procedure. After one year of periodic measurements, the top grafting of 150?180 day old seedlings showed better results in all evaluated effects. Paclobutrazol application favored flowering, since all blooming graftings were in rootstocks in which the regulator was applied. The best time to graft young seedlings is six months before natural flowering, since it has resulted in greater flower production and growth of canopy area. Considering these results, top grafting of young Eucalyptus seedlings can guarantee fast production of flower buds and fruits. Thus, it will become possible to perform consecutive recombination cycles in selected progenies by Genome-Wide Selection in breeding programs, making this technique quite effective in the forestry sector. MenosThe genetic improvement of tree species takes time. The breeding cycles are long and this makes the process difficult. However, the selection and recombination cycles can be reduced considerably by speeding up the recommendation of new clones using a top grafting method in young seedlings. Eucalyptus top grafting is very promising since this graft technique can induce ultra-early flowering, making the use of the Genome-Wide Selection effective. Thus, the aim of this study was to establish a standard methodology for top grafting of young seedlings in order to enable flowering in Eucalyptus progenies. In this sense, 384 top graftings were performed with seedlings originating from 3 different crossings among Eucalyptus urophylla S.T. Blake and Eucalyptus grandis W. Hill ex Maiden species. The progenies? seeds from each crossing were separated, sown, and conducted as seedlings until they reached 60?90 days and 150?180 days of development. The graftings were performed at two different periods of the year: July and October (six and three months before the natural flowering of the species). In addition to the mentioned effects, the efficiency of paclobutrazol in stimulating flowering was analyzed from its application on each rootstock genotype. At three-month intervals, the live top grafting samples were evaluated on flower production (bud and fruit account) and scion development (survival rate and canopy area measurement). The differences between treatments and the interactions we... Mostrar Tudo |
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Thesagro: |
Eucalipto; Melhoramento Genético Vegetal. |
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Thesaurus NAL: |
Eucalyptus; Genome; Paclobutrazol. |
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Categoria do assunto: |
-- |
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Marc: |
LEADER 03427naa a2200253 a 4500
001 2139229
005 2022-01-21
008 2021 bl uuuu u00u1 u #d
024 7 $ahttps://doi.org/10.1016/j.indcrop.2021.113906$2DOI
100 1 $aCASTRO, C. A. de O.
245 $aAccelerating Eucalyptus breeding strategies through top grafting applied to young seedlings.$h[electronic resource]
260 $c2021
520 $aThe genetic improvement of tree species takes time. The breeding cycles are long and this makes the process difficult. However, the selection and recombination cycles can be reduced considerably by speeding up the recommendation of new clones using a top grafting method in young seedlings. Eucalyptus top grafting is very promising since this graft technique can induce ultra-early flowering, making the use of the Genome-Wide Selection effective. Thus, the aim of this study was to establish a standard methodology for top grafting of young seedlings in order to enable flowering in Eucalyptus progenies. In this sense, 384 top graftings were performed with seedlings originating from 3 different crossings among Eucalyptus urophylla S.T. Blake and Eucalyptus grandis W. Hill ex Maiden species. The progenies? seeds from each crossing were separated, sown, and conducted as seedlings until they reached 60?90 days and 150?180 days of development. The graftings were performed at two different periods of the year: July and October (six and three months before the natural flowering of the species). In addition to the mentioned effects, the efficiency of paclobutrazol in stimulating flowering was analyzed from its application on each rootstock genotype. At three-month intervals, the live top grafting samples were evaluated on flower production (bud and fruit account) and scion development (survival rate and canopy area measurement). The differences between treatments and the interactions were detected using variance analysis and the Scott-Knott test (p-value< 0.05). Top grafting proved to be effective in inducing very early flowering in Eucalyptus, as it produced enough flower buds to carry out the next recombination cycle in progenies of the crossing between Eucalyptus urophylla × Eucalyptus grandis. The flowering was observed three months after the graft procedure. After one year of periodic measurements, the top grafting of 150?180 day old seedlings showed better results in all evaluated effects. Paclobutrazol application favored flowering, since all blooming graftings were in rootstocks in which the regulator was applied. The best time to graft young seedlings is six months before natural flowering, since it has resulted in greater flower production and growth of canopy area. Considering these results, top grafting of young Eucalyptus seedlings can guarantee fast production of flower buds and fruits. Thus, it will become possible to perform consecutive recombination cycles in selected progenies by Genome-Wide Selection in breeding programs, making this technique quite effective in the forestry sector.
650 $aEucalyptus
650 $aGenome
650 $aPaclobutrazol
650 $aEucalipto
650 $aMelhoramento Genético Vegetal
700 1 $aSANTOS, G. A. dos
700 1 $aTAKAHASHI, E. K.
700 1 $aNUNES, A. C. P.
700 1 $aSOUZA, G. A.
700 1 $aRESENDE, M. D. V. de
773 $tIndustrial Crops and Products$gv. 171, n. 1, 113906, 2021.
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