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Current Trends in Science and Technology

an Open Access Publication ISSN: 0976-9730 | 0976-9498

Botany (Plant Science)

Afrocarpous: A Vulnerable Genus

Dr Teena agrawal
Assistant professor, Banasthali University, niwai Email Id: tagarwal02@gmail.com
Online First: February 14, 2018
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Abstract

Gymnosperms are the plants of the great evolutionary values. They have the reserves of the metabolites and the many kinds of the genes of the evolution clock, they represent the whole of the giant ecosystem in the Mesozoic era; however during the Dawn of the Mesozoic era one can seen the tremendous decline in the vegetation of the gymnosperms. Now in this era they are presented by only some of the specie and the genera which can be counted on the fingers generally 85-86 and some 700 species all over the world .Among the conifers. Conifers are the most abundant and the widely distributed plants of the gymnosperms, in this review articles we are presenting some of the aspects of the genus Afrocarpous of the family podocarpaceae .Podocarpaceae are the trees which have the giant trees with the 40-50 meters in height.  The plants of the Afrocarpous are the evergreen in the texture and they have the long needled and the male the female ovuliferous scales on them. The genus is endemic of the many places of the Africa continent.

Keyword : : Gymnosperms, conifers, endemic, evergreen, ovuliferous scales.

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Feb 14, 2018
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Feb 14, 2018
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References

1. Biffin, E., T.J. Brodribb, R.S. Hill, P. Thomas, and A.J. Lowe. 2011. Leaf evolution in Southern Hemisphere conifers tracks the angiosperm ecological radiation. Proceedings of the Royal Society B, Biological Sciences doi:10.1098/rspb.2011.0559 (published online). 2. Conran, J.G., G.M. Woods, P.G. Martin, J.M. Dowd, C.J. Quinn, P.A. Gadek and R.A. Price. 2000. Generic relationships within and between the gymnosperm families Podocarpaceae and Phyllocladaceae based on an analysis of the chloroplast gene rbcL. Australian Journal of Botany 48:715–724. 3. Kelch, D.G. 1998. Phylogeny of Podocarpaceae: comparison of evidence from morphology and 18S rDNA. American Journal of Botany 85(7):986–996. 4. Sinclair, W.T., R.R. Mill, M.F. Gardner, P. Woltz, T. Jaffré, J. Preston, M.L. Hollingsworth, A. Ponge and M. Möller. 2002. Evolutionary relationships of the New Caledonian heterotrophic conifer, Parasitaxus usta (Podocarpaceae), inferred from chloroplast trnL-F intron/spacer and nuclear rDNA ITS2 sequences. Plant Systematics and Evolution 233:79–104. 5. Barker, N.P., E.M. Muller, and R.R. Mill. 2004. A yellowwood by any other name: molecular systematics and the taxonomy of Podocarpus and the Podocarpaceae in southern Africa. South African Journal of Science 100:629-632. 6. N. Page. 1989. "New and maintained genera in the conifer Christopher families Podocarpaceae and Pinaceae". Notes of the Royal Botanical Garden Edinburgh 45(2): 377-395. 7. Earle, Christopher J. (2012). "Afrocarpus". The Gymnosperm Database, conifers.org. Retrieved April 13, 2016. 8. Earle, Christopher J. (2015). "Afrocarpus falcatus". The Gymnosperm Database, conifers.org. Retrieved April 13, 2016. 9. Farjon, Aljos (2010). A Handbook of the World's Conifers. Leiden: Brill. p. 136. ISBN 9789004177185. 10. James E. Eckenwalder. 2009. Conifers of the World. Timber Press: Portland, OR, USA. ISBN 978-0-88192-974-4. 11. Afrocarpus At: Podocarpaceae At: The Gymnosperm Database 12. PROTA4U, a new interactive webdatabase on plants used by people in tropical Africa.
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References

1. Biffin, E., T.J. Brodribb, R.S. Hill, P. Thomas, and A.J. Lowe. 2011. Leaf evolution in Southern Hemisphere conifers tracks the angiosperm ecological radiation. Proceedings of the Royal Society B, Biological Sciences doi:10.1098/rspb.2011.0559 (published online).
2. Conran, J.G., G.M. Woods, P.G. Martin, J.M. Dowd, C.J. Quinn, P.A. Gadek and R.A. Price. 2000. Generic relationships within and between the gymnosperm families Podocarpaceae and Phyllocladaceae based on an analysis of the chloroplast gene rbcL. Australian Journal of Botany 48:715–724.
3. Kelch, D.G. 1998. Phylogeny of Podocarpaceae: comparison of evidence from morphology and 18S rDNA. American Journal of Botany 85(7):986–996.
4. Sinclair, W.T., R.R. Mill, M.F. Gardner, P. Woltz, T. Jaffré, J. Preston, M.L. Hollingsworth, A. Ponge and M. Möller. 2002. Evolutionary relationships of the New Caledonian heterotrophic conifer, Parasitaxus usta (Podocarpaceae), inferred from chloroplast trnL-F intron/spacer and nuclear rDNA ITS2 sequences. Plant Systematics and Evolution 233:79–104.
5. Barker, N.P., E.M. Muller, and R.R. Mill. 2004. A yellowwood by any other name: molecular systematics and the taxonomy of Podocarpus and the Podocarpaceae in southern Africa. South African Journal of Science 100:629-632.
6. N. Page. 1989. "New and maintained genera in the conifer Christopher families Podocarpaceae and Pinaceae". Notes of the Royal Botanical Garden Edinburgh 45(2): 377-395.
7. Earle, Christopher J. (2012). "Afrocarpus". The Gymnosperm Database, conifers.org. Retrieved April 13, 2016.
8. Earle, Christopher J. (2015). "Afrocarpus falcatus". The Gymnosperm Database, conifers.org. Retrieved April 13, 2016.
9. Farjon, Aljos (2010). A Handbook of the World's Conifers. Leiden: Brill. p. 136. ISBN 9789004177185.
10. James E. Eckenwalder. 2009. Conifers of the World. Timber Press: Portland, OR, USA. ISBN 978-0-88192-974-4.
11. Afrocarpus At: Podocarpaceae At: The Gymnosperm Database
12. PROTA4U, a new interactive webdatabase on plants used by people in tropical Africa.
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