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Registro Completo |
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Biblioteca(s): |
Embrapa Florestas. |
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Data corrente: |
19/10/2015 |
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Data da última atualização: |
11/02/2016 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Autoria: |
WENDLING, I.; WASRBURTON, P. M.; TRUEMAN, S. J. |
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Afiliação: |
IVAR WENDLING, CNPF; Paul M. Warburton, CSIRO; Stephen J. Trueman, University of the Sunshine Coast. |
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Título: |
Maturation in Corymbia torelliana × C. citriodora stock plants: effects of pruning height on shoot production, adventitious rooting capacity, stem anatomy, and auxin and abscisic acid concentrations. |
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Ano de publicação: |
2015 |
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Fonte/Imprenta: |
Forests, v. 6, n. 10, p. 3763-3778, 2015. |
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DOI: |
10.3390/f6103763 |
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Idioma: |
Inglês |
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Conteúdo: |
Repeated pruning of stock plants is a common approach to delaying maturation and maintaining the propagation ability of cuttings, but little is known about the hormonal or anatomical basis for this phenomenon. We tested the effect of two different stock-plant pruning heights (15 cm and 30 cm) on shoot production, rooting capacity and rooted cutting vigour of six clones of the eucalypt Corymbia torelliana × C. citriodora. We determined whether differences in rooting potential were related to indole-3-acetic (IAA) and abscisic acid (ABA) concentrations, or the degree of lignification or sclerification, of the cuttings. Maintaining stock plants at 15 cm height sometimes reduced the production of stem cuttings. However, it often increased the ensuing percentage of cuttings that formed roots, with mean rooting across all clones increasing from 30%?53%. Therefore, the number of rooted cuttings produced by short stock plants was similar to, or higher than, the number produced by tall stock plants. Cuttings from shorter stock plants had faster root elongation and occasionally greater root dry mass, shoot dry mass or shoot height than cuttings from tall stock plants. These differences in rooting potential were generally not related to differences in IAA or ABA concentrations of the cuttings or to differences in their stem anatomy. Pruning at the lower height was more effective in maintaining clonal juvenility, supporting previous findings that stock plant maturation is a limiting factor in clonal propagation of Corymbia torelliana × C. citriodora. MenosRepeated pruning of stock plants is a common approach to delaying maturation and maintaining the propagation ability of cuttings, but little is known about the hormonal or anatomical basis for this phenomenon. We tested the effect of two different stock-plant pruning heights (15 cm and 30 cm) on shoot production, rooting capacity and rooted cutting vigour of six clones of the eucalypt Corymbia torelliana × C. citriodora. We determined whether differences in rooting potential were related to indole-3-acetic (IAA) and abscisic acid (ABA) concentrations, or the degree of lignification or sclerification, of the cuttings. Maintaining stock plants at 15 cm height sometimes reduced the production of stem cuttings. However, it often increased the ensuing percentage of cuttings that formed roots, with mean rooting across all clones increasing from 30%?53%. Therefore, the number of rooted cuttings produced by short stock plants was similar to, or higher than, the number produced by tall stock plants. Cuttings from shorter stock plants had faster root elongation and occasionally greater root dry mass, shoot dry mass or shoot height than cuttings from tall stock plants. These differences in rooting potential were generally not related to differences in IAA or ABA concentrations of the cuttings or to differences in their stem anatomy. Pruning at the lower height was more effective in maintaining clonal juvenility, supporting previous findings that stock plant maturation is a limiting fac... Mostrar Tudo |
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Palavras-Chave: |
Espécie exótica; Hormônios vegetais; Juvenilidade; Propagation; Raízes adventícias. |
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Thesagro: |
Propagação Vegetativa. |
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Thesaurus Nal: |
adventitious roots; Corymbia; Eucalyptus; juvenility; plant hormones. |
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Categoria do assunto: |
-- |
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URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/item/131314/1/2015-Ivar-F-Maturation.pdf
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Marc: |
LEADER 02505naa a2200289 a 4500
001 2026706
005 2016-02-11
008 2015 bl uuuu u00u1 u #d
024 7 $a10.3390/f6103763$2DOI
100 1 $aWENDLING, I.
245 $aMaturation in Corymbia torelliana × C. citriodora stock plants$beffects of pruning height on shoot production, adventitious rooting capacity, stem anatomy, and auxin and abscisic acid concentrations.$h[electronic resource]
260 $c2015
520 $aRepeated pruning of stock plants is a common approach to delaying maturation and maintaining the propagation ability of cuttings, but little is known about the hormonal or anatomical basis for this phenomenon. We tested the effect of two different stock-plant pruning heights (15 cm and 30 cm) on shoot production, rooting capacity and rooted cutting vigour of six clones of the eucalypt Corymbia torelliana × C. citriodora. We determined whether differences in rooting potential were related to indole-3-acetic (IAA) and abscisic acid (ABA) concentrations, or the degree of lignification or sclerification, of the cuttings. Maintaining stock plants at 15 cm height sometimes reduced the production of stem cuttings. However, it often increased the ensuing percentage of cuttings that formed roots, with mean rooting across all clones increasing from 30%?53%. Therefore, the number of rooted cuttings produced by short stock plants was similar to, or higher than, the number produced by tall stock plants. Cuttings from shorter stock plants had faster root elongation and occasionally greater root dry mass, shoot dry mass or shoot height than cuttings from tall stock plants. These differences in rooting potential were generally not related to differences in IAA or ABA concentrations of the cuttings or to differences in their stem anatomy. Pruning at the lower height was more effective in maintaining clonal juvenility, supporting previous findings that stock plant maturation is a limiting factor in clonal propagation of Corymbia torelliana × C. citriodora.
650 $aadventitious roots
650 $aCorymbia
650 $aEucalyptus
650 $ajuvenility
650 $aplant hormones
650 $aPropagação Vegetativa
653 $aEspécie exótica
653 $aHormônios vegetais
653 $aJuvenilidade
653 $aPropagation
653 $aRaízes adventícias
700 1 $aWASRBURTON, P. M.
700 1 $aTRUEMAN, S. J.
773 $tForests$gv. 6, n. 10, p. 3763-3778, 2015.
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Registro original: |
Embrapa Florestas (CNPF) |
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 | Acesso ao texto completo restrito à biblioteca da Embrapa Trigo. Para informações adicionais entre em contato com cnpt.biblioteca@embrapa.br. |
Registro Completo
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Biblioteca(s): |
Embrapa Trigo. |
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Data corrente: |
29/11/1994 |
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Data da última atualização: |
29/11/1994 |
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Autoria: |
WIETHÖLTER, S.; ROSSO, I. J. |
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Título: |
Efeito de potassio na cultura da soja e relações entre fatores do solo e da planta, no solo Passo Fundo. |
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Ano de publicação: |
1993 |
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Fonte/Imprenta: |
In: REUNIÃO DE PESQUISA DE SOJA DA REGIÃO SUL, 19., 1991, Pelotas. Ata e resumos... Pelotas: EMBRAPA-CPACT, [1993]. E em EMBRAPA. Centro Nacional de Pesquisa de |
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Páginas: |
p. 157 |
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Série: |
(EMBRAPA-CNPT. Documentos, 3). |
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ISSN: |
0101-6444 |
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Idioma: |
Português |
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Notas: |
Trabalho apresentado na XIX Reunião de Pesquisa de Soja da Região Sul, Pelotas, 1991. |
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Categoria do assunto: |
-- |
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Marc: |
LEADER 00707naa a2200169 a 4500
001 1824906
005 1994-11-29
008 1993 bl uuuu u00u1 u #d
022 $a0101-6444
100 1 $aWIETHÖLTER, S.
245 $aEfeito de potassio na cultura da soja e relações entre fatores do solo e da planta, no solo Passo Fundo.
260 $c1993
300 $ap. 157
490 $a(EMBRAPA-CNPT. Documentos, 3).
500 $aTrabalho apresentado na XIX Reunião de Pesquisa de Soja da Região Sul, Pelotas, 1991.
700 1 $aROSSO, I. J.
773 $tIn: REUNIÃO DE PESQUISA DE SOJA DA REGIÃO SUL, 19., 1991, Pelotas. Ata e resumos... Pelotas: EMBRAPA-CPACT, [1993]. E em EMBRAPA. Centro Nacional de Pesquisa de
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