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Registro Completo |
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Biblioteca(s): |
Embrapa Café. |
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Data corrente: |
10/01/2023 |
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Data da última atualização: |
10/01/2023 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Autoria: |
CASTRO, C. A. de O.; SANTOS, G. A. dos; TAKAHASHI, E. K.; NUNES, A. C. P.; SOUZA, G. A. de; RESENDE, M. D. V. de; ZANUNCIO, J. C. |
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Afiliação: |
CARLA APARECIDA DE OLIVEIRA CASTRO, CENTRO FLORESTAL DE NIEDERHOF; GLEISON AUGUSTO DOS SANTOS, UNIVERSIDADE FEDERAL DE VIÇOSA; ELIZABETE KEIKO TAKAHASHI, CELULOSE NIPO-BRASILEIRA; ANDREI CAIQUE PIRES NUNES, UNIVERSIDADE FEDERAL DO SUL DA BAHIA; GENAINA APARECIDA DE SOUZA, UNIVERSIDADE FEDERAL DE VIÇOSA; MARCOS DEON VILELA DE RESENDE, CNPCa; JOSÉ COLA ZANUNCIO, UNIVERSIDADE FEDERAL DE VIÇOSA. |
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Título: |
Top grafting to accelerate self-pollination in eucalyptus breeding. |
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Ano de publicação: |
2022 |
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Fonte/Imprenta: |
Revista Árvore, v. 46, 2022. |
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Páginas: |
13 p. |
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DOI: |
https://doi.org/10.1590/1806-908820220000030 |
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Idioma: |
Inglês |
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Conteúdo: |
The top grafting technique can make early flowering possible and consequently accelerate self-pollination in Eucalyptus breeding, reducing the period of each generation. This study aims to establish a methodology to top graft by applying the growth regulator paclobutrazol in self-pollinated Eucalyptus genotypes to induce early flowering and accelerate inbred line strategies. A total of 448 top grafts of seven genotypes (three Eucalyptus urophylla × Eucalyptus grandis hybrids, one Eucalyptus urophylla, and three Eucalyptus grandis) were performed in two periods of the year: July and October. The top grafting samples were evaluated concerning flower induction and graft development at three-month intervals. A t-test was performed with a 5% significance level for type I error to compare the relevance of paclobutrazol application. A fixed model was also used to analyze the significance of the treatments. The fastest blooming occurred after three months of applying the graft methodology. After two years, the top graftings performed in October presented higher flower bud and fruit production. The top grafting affected the induction of self-pollinated Eucalyptus flowers with enough flower buds produced to follow the next cycle of self-pollination in some genotypes. The effectiveness of self-pollinated top graftings varied with the genotype used as the scion. The paclobutrazol improved the flowering of the top grafting samples. The methodology established in this work allows accelerating self-pollination strategies in the globally important industrial crop Eucalyptus. MenosThe top grafting technique can make early flowering possible and consequently accelerate self-pollination in Eucalyptus breeding, reducing the period of each generation. This study aims to establish a methodology to top graft by applying the growth regulator paclobutrazol in self-pollinated Eucalyptus genotypes to induce early flowering and accelerate inbred line strategies. A total of 448 top grafts of seven genotypes (three Eucalyptus urophylla × Eucalyptus grandis hybrids, one Eucalyptus urophylla, and three Eucalyptus grandis) were performed in two periods of the year: July and October. The top grafting samples were evaluated concerning flower induction and graft development at three-month intervals. A t-test was performed with a 5% significance level for type I error to compare the relevance of paclobutrazol application. A fixed model was also used to analyze the significance of the treatments. The fastest blooming occurred after three months of applying the graft methodology. After two years, the top graftings performed in October presented higher flower bud and fruit production. The top grafting affected the induction of self-pollinated Eucalyptus flowers with enough flower buds produced to follow the next cycle of self-pollination in some genotypes. The effectiveness of self-pollinated top graftings varied with the genotype used as the scion. The paclobutrazol improved the flowering of the top grafting samples. The methodology established in this work allows accelera... Mostrar Tudo |
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Thesaurus Nal: |
Eucalyptus; Inbred lines; Paclobutrazol; Plant breeding; Self-pollination. |
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Categoria do assunto: |
-- |
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URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/doc/1150849/1/Top-grafting-to-accelerate.pdf
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Marc: |
LEADER 02373naa a2200277 a 4500
001 2150849
005 2023-01-10
008 2022 bl uuuu u00u1 u #d
024 7 $ahttps://doi.org/10.1590/1806-908820220000030$2DOI
100 1 $aCASTRO, C. A. de O.
245 $aTop grafting to accelerate self-pollination in eucalyptus breeding.$h[electronic resource]
260 $c2022
300 $a13 p.
520 $aThe top grafting technique can make early flowering possible and consequently accelerate self-pollination in Eucalyptus breeding, reducing the period of each generation. This study aims to establish a methodology to top graft by applying the growth regulator paclobutrazol in self-pollinated Eucalyptus genotypes to induce early flowering and accelerate inbred line strategies. A total of 448 top grafts of seven genotypes (three Eucalyptus urophylla × Eucalyptus grandis hybrids, one Eucalyptus urophylla, and three Eucalyptus grandis) were performed in two periods of the year: July and October. The top grafting samples were evaluated concerning flower induction and graft development at three-month intervals. A t-test was performed with a 5% significance level for type I error to compare the relevance of paclobutrazol application. A fixed model was also used to analyze the significance of the treatments. The fastest blooming occurred after three months of applying the graft methodology. After two years, the top graftings performed in October presented higher flower bud and fruit production. The top grafting affected the induction of self-pollinated Eucalyptus flowers with enough flower buds produced to follow the next cycle of self-pollination in some genotypes. The effectiveness of self-pollinated top graftings varied with the genotype used as the scion. The paclobutrazol improved the flowering of the top grafting samples. The methodology established in this work allows accelerating self-pollination strategies in the globally important industrial crop Eucalyptus.
650 $aEucalyptus
650 $aInbred lines
650 $aPaclobutrazol
650 $aPlant breeding
650 $aSelf-pollination
700 1 $aSANTOS, G. A. dos
700 1 $aTAKAHASHI, E. K.
700 1 $aNUNES, A. C. P.
700 1 $aSOUZA, G. A. de
700 1 $aRESENDE, M. D. V. de
700 1 $aZANUNCIO, J. C.
773 $tRevista Árvore$gv. 46, 2022.
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Registro original: |
Embrapa Café (CNPCa) |
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| 1. |  | RIBEIRO, M. V.; RODRIGUES, I. C. da S.; BARBIERI, R. L.; MARIOT, M. P.; PETERS, J. A.; BIANCHI, V. J.; BRAGA, E. J. B. Estabelecimento in vitro de Espinheira-Santa oriundas do banco de germoplasma da Embrapa Clima Temperado, Pelotas, RS. In: JORNADA DE PÓS-GRADUAÇÃO E PESQUISA, 6., 2008, Bagé. Revista Congrega URCAMP, Bagé, v. 4, n. 4, Não paginada , nov. 2008. 1 CD-ROM.| Tipo: Artigo em Anais de Congresso / Nota Técnica |
| Biblioteca(s): Embrapa Clima Temperado. |
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