Effects of Decapitation, Water-Deficit Stress, and Pot Size on Morpho-Anatomy and Physiology of Pterocarpus indicus

Authors

  • Jonathan Ogayon Hernandez Department of Forest Biological Sciences, College of Forestry and Natural Resources, University of the Philippines Los Baños
  • Marilyn Sabalvaro Combalicer Department of Forest Biological Sciences, College of Forestry and Natural Resources, University of the Philippines Los Baños
  • Arthur Glenn Agojo Umali Department of Forest Biological Sciences, College of Forestry and Natural Resources, University of the Philippines Los Baños
  • Lerma San Jose Maldia Department of Forest Biological Sciences, College of Forestry and Natural Resources, University of the Philippines Los Baños

DOI:

https://doi.org/10.23960/jsl.v12i1.821

Abstract

The interacting effects of stem decapitation, water-deficit stress, and pot size on the growth, morpho-anatomical, and physiological traits of Pterocarpus indicus seedlings were analyzed in this study. Changes in root collar diameter (RCD), biomass allocation, number of leaflets (NL), mean leaf area, guard cell size, stomatal aperture size, phloem cap fiber (PCF) thickness, xylem vessel density (XVD), relative leaf water content (RWC), stomatal conductance (gsw), transpiration rate (E), fluorescence quantum yield, transpiration (E), photosynthesis (PN), and electron transport rate (ETR) of decapitated and undecapitated P. indicus seedlings in different pot sizes (small, medium, large) and watering regimes (every 2, 7, and 14 days) were analyzed. The decapitation × water-deficit stress × and pot size interaction did not affect growth and morpho-anatomical variables, but they did on most of the physiological traits. Decapitated seedlings watered every 14 days and planted in medium or large pots have lower gsw, PN, E, and RWC. While the RCD of large-potted and water-stressed (every 14 days) seedlings decreased, allocations to stem and fine roots increased. Moreover, the NL and PCF significantly decreased, while the ETR and XVD significantly increased in decapitated and water-stressed seedlings. Overall, the decapitation-watering interaction caused significant stress to P. indicus seedlings.

Keywords: biomass allocations, decapitation, drought stress, multiple stress, xylem vessel density

Downloads

Download data is not yet available.

Downloads

Published

04-01-2024

How to Cite

Hernandez, J. O., Combalicer, M. S. ., Umali, A. G. A. ., & Maldia, L. S. J. . (2024). Effects of Decapitation, Water-Deficit Stress, and Pot Size on Morpho-Anatomy and Physiology of Pterocarpus indicus. Jurnal Sylva Lestari, 12(1), 113–131. https://doi.org/10.23960/jsl.v12i1.821

Issue

Vol. 12 No. 1 (2024): January

Section

Articles

Statistics

 Abstract views: 312 times
 PDF downloaded: 285 times

Metrics

License

Copyright (c) 2024 Jonathan Ogayon Hernandez, Marilyn Sabalvaro Combalicer, Arthur Glenn Agojo Umali, Lerma San Jose Maldia

Creative Commons License

This work is licensed under a Creative Commons Attribution-NonCommercial 4.0 International License.

Authors retain copyright and grant the journal right of first publication with the work simultaneously licensed under a Creative Commons Attribution-NonCommercial 4.0 Licence that allows others to share the work with an acknowledgement of the work's authorship and initial publication in this journal.

Authors are able to enter into separate, additional contractual arrangements for the non-exclusive distribution of the journal's published version of the work (e.g., post it to an institutional repository or publish it in a book), with an acknowledgement of its initial publication in this journal.

Authors are permitted and encouraged to post their work online (e.g., in institutional repositories or on their website) prior to and during the submission process, as it can lead to productive exchanges, as well as earlier and greater citation of published work (See The Effect of Open Access).