Consulta: subjectFacets:"Conifer"
Registros recuperados: 4
Data/hora: 10/06/2024 02:37:47

Rare conifers from the type area of the Maastrichtian (Upper Cretaceous, southeast Netherlands)
Provedor de dados: 16
Autores: Ham, R.W.J.M. van der; Konijnenburg-van Cittert, J.H.A. van.
Two conifer twigs from the type area of the Maastrichtian are described as Brachyphyllum sp. 1 and Brachyphyllum sp. 2. They might belong to the Cheirolepidiaceae, Podocarpaceae or Taxodiaceae. Brachyphyllum sp. 1 occurs with the conifers Brachyphyllum patens (?Cheirolepidiaceae) and Elatidopsis cryptomerioides (Taxodiaceae), the seagrass Thalassocharis bosqueti and the ammonite Baculites vertebralis in the upper part of the Kunrade Chalk in the Kunrade area, while Brachyphyllum sp. 2 probably originates from the lower part of this deposit.
Tipo: Article / Letter to the editor
Palavras-chave: Brachyphyllum; Conifer; Maastrichtian; Kunrade Chalk; 38.21.
Ano: 2003
URL: http://www.repository.naturalis.nl/record/219297

Fungal decomposition of needles in pine plantations
Provedor de dados: 190
Autores: Auer, Celso Garcia; Ghizelini, Angela Michelato; Pimentel, Ida Chapaval.
A literature review was performed to discuss the fungal decomposition of needle pines and impacts on commercial forest production and sustainability. Aspects as organic matter and litter degradation, associated micobiota, and factors that condition this process are discussed. Needles are principal components of residues in pine forests and their decomposition by fungi is important to nutrient turnover. Nutrients released for soil by decomposition increases forest productivity which promotes more biomass production and fixation of carbon in trees.
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Biological degradation; Conifer; Fungus; Litter Degradação biológica; Fungo; Pinheiro; Serapilheira.
Ano: 2010
URL: http://pfb.cnpf.embrapa.br/pfb/index.php/pfb/article/view/137

Reserve metabolism of stored and germinated Araucaria angustifolia seeds
Provedor de dados: 1
Autores: Araldi, Cristhyane Garcia; Coelho, Cileide Maria Medeiros.
Germination metabolism of recalcitrant seeds of Araucaria angustifolia is activated in storage, which complicates the seeds conservation and utilization. This study aimed to identify the changes in the reserve metabolites of A. angustifolia seeds throughout storage in order to understand the processes of hydrolysis caused by germination metabolism. Mature seeds were harvested in southern Brazil and stored in an ambient environment and cold chamber conditions. Biochemical analyses were performed for embryos and megagametophytes from seeds stored for 0, 15, 30, 45, and 90 days. Due to seeds being in advanced germination in storage, they were evaluated at 90 days in different early developmental categories: I – seeds with mature embryos, II – seeds with...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Brazilian pine; Conifer; Protein profile; Reserve mobilization.
Ano: 2019
URL: http://periodicos.uem.br/ojs/index.php/ActaSciAgron/article/view/42707

Somatic Embryogenesis in Parana Pine (Araucaria angustifolia (Bert.) O. Kuntze)
Provedor de dados: 52
Autores: Santos,André Luis Wendt dos; Silveira,Vanildo; Steiner,Neusa; Vidor,Mário; Guerra,Miguel Pedro.
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...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Araucaria angustifolia; Conifer; Somatic embryogenesis; Picea abies; Embryo maturation; Pinus sp.
Ano: 2002
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132002000100015