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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Instituto de Tecnologia do Paraná (Tecpar)
2002-03-01
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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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