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Registro Completo |
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Biblioteca(s): |
Embrapa Florestas. |
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Data corrente: |
26/09/2006 |
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Data da última atualização: |
22/05/2024 |
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Autoria: |
WARRAG, E. I.; LESNEY, M. S.; ROCKWOOD, D. L. |
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Título: |
Comparative greenhouse study of Eucalyptus grandis in vitro plantlets and half-sib seedlings, II. Dry matter accumulation and relative distribution. |
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Ano de publicação: |
1989 |
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Fonte/Imprenta: |
Plant Cell Reports, New York, v. 8, n. 8, p. 500-503, 1989. |
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Idioma: |
Inglês |
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Conteúdo: |
In vitro directly micropropagated plantlets from three selected five-year-old E. grandis hybrids were compared to their related half-sib seedlings for growth and growth pattern parameters under greenhouse conditions used for operational seedling production. The oven dry weights were determined from stem, leaf, and root samples collected 4 times at 40 day intervals. Relative growth rate, net assimilation rates and shoot : root ratio were calculated. Survival was 98% and 95% for plantlets and seedlings respectively. Significant differences were observed between parents in terms of shoot and root dry weights and their ratios with similar ranking among plantlets and seedlings, suggesting genetic control over these traits. Plantlets started with significantly higher root : shoot ratios and stem, root and total dry weight. Although seedlings had higher relative growth and net assimilation rates, all the initial differences decreased sharply over time. |
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Palavras-Chave: |
Broadleaves; Distribuicao; Growth; Peso seco; Planting stock; Plantula micropropagada. |
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Thesagro: |
Cultura de Tecido; Eucalyptus Grandis; Micropropagação. |
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Thesaurus Nal: |
forest trees; seedlings; tissue culture; vegetative propagation. |
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Categoria do assunto: |
-- |
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Marc: |
LEADER 01880naa a2200301 a 4500
001 1278666
005 2024-05-22
008 1989 bl uuuu u00u1 u #d
100 1 $aWARRAG, E. I.
245 $aComparative greenhouse study of Eucalyptus grandis in vitro plantlets and half-sib seedlings, II. Dry matter accumulation and relative distribution.$h[electronic resource]
260 $c1989
520 $aIn vitro directly micropropagated plantlets from three selected five-year-old E. grandis hybrids were compared to their related half-sib seedlings for growth and growth pattern parameters under greenhouse conditions used for operational seedling production. The oven dry weights were determined from stem, leaf, and root samples collected 4 times at 40 day intervals. Relative growth rate, net assimilation rates and shoot : root ratio were calculated. Survival was 98% and 95% for plantlets and seedlings respectively. Significant differences were observed between parents in terms of shoot and root dry weights and their ratios with similar ranking among plantlets and seedlings, suggesting genetic control over these traits. Plantlets started with significantly higher root : shoot ratios and stem, root and total dry weight. Although seedlings had higher relative growth and net assimilation rates, all the initial differences decreased sharply over time.
650 $aforest trees
650 $aseedlings
650 $atissue culture
650 $avegetative propagation
650 $aCultura de Tecido
650 $aEucalyptus Grandis
650 $aMicropropagação
653 $aBroadleaves
653 $aDistribuicao
653 $aGrowth
653 $aPeso seco
653 $aPlanting stock
653 $aPlantula micropropagada
700 1 $aLESNEY, M. S.
700 1 $aROCKWOOD, D. L.
773 $tPlant Cell Reports, New York$gv. 8, n. 8, p. 500-503, 1989.
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