Leaf traits of sal (Shorea robusta Gaertn.) populations selected from different regions of Bangladesh

Authors

  • Pragga Saha Sharmi Ecology and Environment Laboratory, Department of Botany, University of Dhaka, Dhaka 1000, Bangladesh
  • Md Abul Kashem Ecology and Environment Laboratory, Department of Botany, University of Dhaka, Dhaka 1000, Bangladesh
  • Md Habibur Rahman Ecology and Environment Laboratory, Department of Botany, University of Dhaka, Dhaka 1000, Bangladesh
  • Mohammad Zabed Hossain Ecology and Environment Laboratory, Department of Botany, University of Dhaka, Dhaka 1000, Bangladesh

DOI:

https://doi.org/10.3329/dujbs.v30i2.54656

Keywords:

Shorea robusta, Leaf traits, Environmental factors, Adaptation

Abstract

This study investigated the variation in leaf traits of Sal (Shorea robusta Gaertn.) by collecting leaf samples from the natural populations of Sal distributed in Madhupur National Park, Cumilla and Dinajpur areas of Bangladesh. Soil samples were collected at 0 - 10 cm depth near the base of the tree trunk of the respective plants selected for the collection of leaf samples. Soils were analyzed for moisture content, pH, electrical conductivity, available N, total P, and organic C contents. Data showed a range of variation in the responses of leaf traits of the three populations. However, none of the morphological and physiological traits showed significant differences except chlorophyll content (p = 0.0047). Conversely, significant difference appeared in most of the leaf anatomical properties such as stomatal pore index (p = 0.0369), open-close behavior (p = < 0.0001) and stomatal density (p = 0.0008) among the three forests. Stomatal density, pore index, and percent open stomata were higher in the Madhupur forest, while closed stomata were significantly higher in the Dinajpur forest. Thus, the present study indicated that although all leaf traits did not show a similar trend of response, leaf stomata were more responsive to different geographical distribution, which could be attributed to the variation in soil moisture conditions.

Dhaka Univ. J. Biol. Sci. 30(2): 317-324, 2021 (July)

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Published

2021-07-09

How to Cite

Sharmi, P. S., Kashem, M. A., Rahman, M. H., & Hossain, M. Z. (2021). Leaf traits of sal (Shorea robusta Gaertn.) populations selected from different regions of Bangladesh. Dhaka University Journal of Biological Sciences, 30(2), 317–324. https://doi.org/10.3329/dujbs.v30i2.54656

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Articles