Somatic Embryogenesis in Parana Pine (Araucaria angustifolia (Bert.) O. Kuntze)

Embryogenic cultures of Araucaria angustifolia were induced from dominant and non-dominant zygotic embryos excised from immature seeds proceeding from three different genotypes and five harvest dates. Zygotic embryos were inoculated in inductive culture medium LP and BM supplemented with or without...

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Main Authors: André Luis Wendt dos Santos, Vanildo Silveira, Neusa Steiner, Mário Vidor, Miguel Pedro Guerra
Format: Article
Language:English
Published: Instituto de Tecnologia do Paraná (Tecpar) 2002-03-01
Series:Brazilian Archives of Biology and Technology
Subjects:
Online Access:http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132002000100015
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spelling doaj-d09b5e46402f464ba723d3d74214a4542020-11-24T23:12:54ZengInstituto de Tecnologia do Paraná (Tecpar)Brazilian Archives of Biology and Technology1516-89131678-43242002-03-014519710610.1590/S1516-89132002000100015Somatic Embryogenesis in Parana Pine (Araucaria angustifolia (Bert.) O. Kuntze)André Luis Wendt dos SantosVanildo SilveiraNeusa SteinerMário VidorMiguel Pedro GuerraEmbryogenic cultures of Araucaria angustifolia were induced from dominant and non-dominant zygotic embryos excised from immature seeds proceeding from three different genotypes and five harvest dates. Zygotic embryos were inoculated in inductive culture medium LP and BM supplemented with or without plant growth regulators 2,4-D (5 µM), BA (2 µM) and Kin (2 µM). The genotype of the mother tree and the developmental explant stage affected the induction frequency. In the maintenance phase, embryogenic cultures were maintained at continuous repetitive cell cycles every 20 days in semi-solid or liquid medium. In the maturation phase the culture medium was supplemented with different types and levels of growth regulators, osmotic agents, carbohydrates and derived. Embryogenic cultures inoculated in culture medium supplemented with PEG 3350 (6 and 9%), maltose (6 and 9%), plus BA and Kin (1 µM each) resulted in the progression of somatic embryos to globular and torpedo developmental stages.<br>Culturas embriogênicas de A. angustifolia foram induzidas a partir de embriões zigóticos dominantes e não-dominantes excisados de sementes imaturas provenientes de três diferentes genótipos, em cinco datas de coleta. Os embriões zigóticos foram inoculados em meio de cultura LP e BM suplementados ou não com 2,4-D (5 µM), BA (2 µM) e Kin (2 µM). O genótipo da planta doadora e o estádio de desenvolvimento do explante influenciaram significativamente a freqüência de indução. Na fase de manutenção, as culturas embriogênicas foram mantidas em ciclos contínuos de subcultivo a cada 20 dias em meios semi-sólidos ou líquidos. Na fase de maturação, foram testados fontes e níveis de fitorreguladores, agentes osmóticos, carboidratos e derivados. Meios de cultura suplementados com PEG 3350 (6 e 9%), maltose (6 e 9%), BA e Kin (1 µM cada) foram efetivos no desenvolvimento de embriões somáticos nos estádios globular e torpedo.http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132002000100015Araucaria angustifoliaconifersomatic embryogenesisPicea abiesembryo maturationPinus sp.
collection DOAJ
language English
format Article
sources DOAJ
author André Luis Wendt dos Santos
Vanildo Silveira
Neusa Steiner
Mário Vidor
Miguel Pedro Guerra
spellingShingle André Luis Wendt dos Santos
Vanildo Silveira
Neusa Steiner
Mário Vidor
Miguel Pedro Guerra
Somatic Embryogenesis in Parana Pine (Araucaria angustifolia (Bert.) O. Kuntze)
Brazilian Archives of Biology and Technology
Araucaria angustifolia
conifer
somatic embryogenesis
Picea abies
embryo maturation
Pinus sp.
author_facet André Luis Wendt dos Santos
Vanildo Silveira
Neusa Steiner
Mário Vidor
Miguel Pedro Guerra
author_sort André Luis Wendt dos Santos
title Somatic Embryogenesis in Parana Pine (Araucaria angustifolia (Bert.) O. Kuntze)
title_short Somatic Embryogenesis in Parana Pine (Araucaria angustifolia (Bert.) O. Kuntze)
title_full Somatic Embryogenesis in Parana Pine (Araucaria angustifolia (Bert.) O. Kuntze)
title_fullStr Somatic Embryogenesis in Parana Pine (Araucaria angustifolia (Bert.) O. Kuntze)
title_full_unstemmed Somatic Embryogenesis in Parana Pine (Araucaria angustifolia (Bert.) O. Kuntze)
title_sort somatic embryogenesis in parana pine (araucaria angustifolia (bert.) o. kuntze)
publisher Instituto de Tecnologia do Paraná (Tecpar)
series Brazilian Archives of Biology and Technology
issn 1516-8913
1678-4324
publishDate 2002-03-01
description Embryogenic cultures of Araucaria angustifolia were induced from dominant and non-dominant zygotic embryos excised from immature seeds proceeding from three different genotypes and five harvest dates. Zygotic embryos were inoculated in inductive culture medium LP and BM supplemented with or without plant growth regulators 2,4-D (5 µM), BA (2 µM) and Kin (2 µM). The genotype of the mother tree and the developmental explant stage affected the induction frequency. In the maintenance phase, embryogenic cultures were maintained at continuous repetitive cell cycles every 20 days in semi-solid or liquid medium. In the maturation phase the culture medium was supplemented with different types and levels of growth regulators, osmotic agents, carbohydrates and derived. Embryogenic cultures inoculated in culture medium supplemented with PEG 3350 (6 and 9%), maltose (6 and 9%), plus BA and Kin (1 µM each) resulted in the progression of somatic embryos to globular and torpedo developmental stages.<br>Culturas embriogênicas de A. angustifolia foram induzidas a partir de embriões zigóticos dominantes e não-dominantes excisados de sementes imaturas provenientes de três diferentes genótipos, em cinco datas de coleta. Os embriões zigóticos foram inoculados em meio de cultura LP e BM suplementados ou não com 2,4-D (5 µM), BA (2 µM) e Kin (2 µM). O genótipo da planta doadora e o estádio de desenvolvimento do explante influenciaram significativamente a freqüência de indução. Na fase de manutenção, as culturas embriogênicas foram mantidas em ciclos contínuos de subcultivo a cada 20 dias em meios semi-sólidos ou líquidos. Na fase de maturação, foram testados fontes e níveis de fitorreguladores, agentes osmóticos, carboidratos e derivados. Meios de cultura suplementados com PEG 3350 (6 e 9%), maltose (6 e 9%), BA e Kin (1 µM cada) foram efetivos no desenvolvimento de embriões somáticos nos estádios globular e torpedo.
topic Araucaria angustifolia
conifer
somatic embryogenesis
Picea abies
embryo maturation
Pinus sp.
url http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132002000100015
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