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Somatic Embryogenesis in Araucaria angustifolia (Bertol.) Kuntze (Araucariaceae)
2016This chapter deals with the features of somatic embryogenesis (SE) in Araucaria angustifolia, an endangered and native conifer from south Brazil. In this species SE includes the induction and proliferation of embryogenic cultures composed of pro-embryogenic masses (PEMs), which precede somatic embryos development. A.
Guerra, Miguel P. +6 more
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Development of mucilage cells of Araucaria angustifolia (Araucariaceae)
Protoplasma, 2008The roles of mucilage cells were investigated through morphological and cytological analysis during leaf development in young Araucaria angustifolia plants. Differentiation began in leaf primordia in the shoot apex, when the young cells underwent a greater increase in volume in comparison with other mesophyll cells.
A A, Mastroberti, J E de Araujo, Mariath
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Mesozoic Araucariaceae: Morphology and systematic relationships
Journal of Plant Research, 1994The Southern Hemisphere conifer family Araucariaceae has a very restricted present day distribution, but was more widespread in the past. The genusAraucaria is represented by good fossil material in both hemispheres as early as the Jurassic, whileAgathis is only known from the Southern Hemisphere beginning in the Cretaceous.
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Leaf Axil Anatomy of the Araucariaceae
Australian Journal of Botany, 1987Well defined, persistent meristems, which possess neither a bud-like organisation nor vascular connections with the central vascular cylinder, were found in the apparently blank leaf axils of six species of Agathis and 13 species of Araucaria. In other conifers, leaf axils of similar external appearance are usually reported to lack, or gradually lose ...
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Biflavonoids from the Wollemi Pine, Wollemia nobilis (Araucariaceae)
Biochemical Systematics and Ecology, 2013Abstract Biflavonoids from the leaves of Wollemia nobilis (Wollemi Pine) have been investigated and compared with data on other members of the family Araucariaceae. Based on 1 H and 13 C NMR as well as High Resolution Mass Spectrometry (HRMS) the structures of seven isolated biflavonoids were fully determined. Although all of them were previously
Michał Gleńsk +3 more
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Araucariaceae as indicators of climate and paleolatitudes
Review of Palaeobotany and Palynology, 1978Abstract Mesozoic Araucariaceae dominated in the low-latitude (15–20°N) belt of summer-dry climate. It is suggested, that araucarian forests were the most thermophilous Mesozoic assemblages. There were no equivalents of the modern tropical rain forest.
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1984
Monoecious, medium-sized to very large trees (rarely shrubby in very exposed situations). Either four independent cotyledons or two fused pairs (which may be retained in the seed after germination). The growing point of foliage shoots quite distinct between the two genera, being just a few highly reduced leaves in Araucaria and a highly organized bud ...
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Monoecious, medium-sized to very large trees (rarely shrubby in very exposed situations). Either four independent cotyledons or two fused pairs (which may be retained in the seed after germination). The growing point of foliage shoots quite distinct between the two genera, being just a few highly reduced leaves in Araucaria and a highly organized bud ...
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The record of Araucariaceae macrofossils in New Zealand
Alcheringa: An Australasian Journal of Palaeontology, 2008Pole, M., December, 2008. The record of Araucariaceae macrofossils in New Zealand. Alcheringa 32, 405–426. ISSN 0311-5518. The Araucariaceae have a long record in New Zealand, extending back to the Jurassic at least, and Araucaria extends back to at least the Late Cretaceous.
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The Moluccan Dammars (Agathis, Araucariaceae)
1978There has been a notable divergence of opinion in the recent literature concerning the number of species of dammar (Agathis) that might occur in the general area of the Moluccas. Even early literature presents a tangled nomenclatural trail. Perhaps the difficulty in obtaining good representative collections from these huge rainforest emergents may ...
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Agathis borneensis Warb. Araucariaceae
2020A. Nithaniyal Stalin, F. Merlin Franco
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