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Morpho-anatomical variation and their phylogenetic implications in native and exotic species of Pinus growing in the Indian Himalayas

Lav Singh, Pooja Dixit, Ravi Prakash Srivastava, Shivaraman Pandey, Praveen Chandra Verma, View ORCID ProfileGauri Saxena
doi: https://doi.org/10.1101/754804
Lav Singh
Department of Botany, University of Lucknow, Lucknow. INDIA
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Pooja Dixit
Department of Botany, University of Lucknow, Lucknow. INDIA
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Ravi Prakash Srivastava
Department of Botany, University of Lucknow, Lucknow. INDIA
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Shivaraman Pandey
Plant Diversity, Systematics and Herbarium Division, CSIR-National Botanical Research Institute, Lucknow. INDIA
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Praveen Chandra Verma
Plant Molecular Biology and Genetic Engineering Division, CSIR-National Botanical Research Institute, Lucknow. INDIA
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Gauri Saxena
Department of Botany, University of Lucknow, Lucknow. INDIA
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  • ORCID record for Gauri Saxena
  • For correspondence: gaurigupta72@yahoo.com
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ABSTRACT

Pine is native to all continents and some oceanic islands of the northern hemisphere, chiefly in boreal, temperate or mountainous tropical regions; reaching its southernmost distribution below the equator in Southeast Asia. Pinus is divided into two subgenera, Strobus, and Pinus by the number of vascular bundles present in the needles. Comprehensive and detailed anatomy of needles in ten species of Pinus using nine anatomical traits was carried out. These morphological and anatomical traits supported the classification of the genus up to section level. It was observed that number of needles per fascicle varied along with other related traits such as thickness and width of vascular bundles, the diameter of resin ducts, the thickness of epidermis and thickness and width of endodermal cells that show remarkable variations among different species selected for the present study. The data can be used as a tool for identification and classification of Pinus upto genus and species level. We also found that similarity and differences in leaf anatomical traits supported the molecular phylogeny of Pinus conducted by several researchers.

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The copyright holder for this preprint is the author/funder, who has granted bioRxiv a license to display the preprint in perpetuity. It is made available under a CC-BY-NC-ND 4.0 International license.
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Posted September 03, 2019.
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Morpho-anatomical variation and their phylogenetic implications in native and exotic species of Pinus growing in the Indian Himalayas
Lav Singh, Pooja Dixit, Ravi Prakash Srivastava, Shivaraman Pandey, Praveen Chandra Verma, Gauri Saxena
bioRxiv 754804; doi: https://doi.org/10.1101/754804
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Morpho-anatomical variation and their phylogenetic implications in native and exotic species of Pinus growing in the Indian Himalayas
Lav Singh, Pooja Dixit, Ravi Prakash Srivastava, Shivaraman Pandey, Praveen Chandra Verma, Gauri Saxena
bioRxiv 754804; doi: https://doi.org/10.1101/754804

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