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Tinio, Crusty Estoque
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Agriculture, Biological Sciences & Forestry Earth & Planetary Sciences Energy Environmental Science Materials Science & Nanotechnology

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Anatomical Responses of Bambusa blumeana Schult.f. Treated with Alpha-Naphthalene Acetic Acid Saddoy, John Karlo Cruz; Tinio, Crusty Estoque; Aboc, Vinjoe Magalang; Luna, Amelita Carpio; Combalicer, Marilyn Sabalvaro; Maldia, Lerma San Jose
Jurnal Sylva Lestari Vol. 12 No. 3 (2024): September
Publisher : Department of Forestry, Faculty of Agriculture, University of Lampung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23960/jsl.v12i3.973

Abstract

The underlying mechanism of bamboo anatomical responses remains poorly understood when subjected to different levels of Alpha-Naphthalene Acetic Acid (Alpha-NAA) under nursery conditions. In this paper, we aim to examine the leaf and root anatomy of the Bambusa blumeana Schult.f., a potential bioremediation alternative species, treated with 0 ppm, 100 ppm, and 200 ppm of Alpha-NAA. The experimentation was executed in a completely randomized design within a 3-month experimentation period. Freehand sectioning was performed to collect the leaf and root transverse sections, and the photomicrographs were taken and analyzed. The results revealed that 200 ppm Alpha-NAA significantly increased the diameters of leaf fusoid cells and xylem. In the roots, the thickness of the rhizodermis, sclerenchymatous layer, cortex, and pericycle, as well as the diameter of the phloem, metaxylem, and pith, were significantly affected by the treatments. Generally, there is a weak to moderate correlation between the leaf and root anatomical structures based on Pearson’s correlation and a weak to strong correlation within the organ-specific anatomical structure. Thus, our findings elucidate the potential role of exogenous auxin in inducing anatomical changes that assist the growth and propagation of B. blumeana. Keywords: alpha-naphthalene acetic acid, bamboo, freehand sectioning, leaf anatomy, root anatomy
Leaf Traits of Parashorea malaanonan Along Elevational Gradient in Mount Makiling Forest Reserve, Philippines Ebale, Marsh Reginald Bico; Hernandez, Jonathan Ogayon; Tinio, Crusty Estoque
Jurnal Sylva Lestari Vol. 12 No. 1 (2024): January
Publisher : Department of Forestry, Faculty of Agriculture, University of Lampung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23960/jsl.v12i1.798

Abstract

Studying leaf trait variation and relationships along elevational gradients will enhance our understanding of how plants respond to changing environmental conditions. Thus, we analyzed the leaf traits variation in ecologically and economically important Parashorea malaanonan and the potential influence of environmental covariables (rainfall, relative humidity, and air temperature) on leaf traits along an elevational gradient in Mount Makiling Forest Reserve (MMFR). Three sampling sites were selected based on elevation, i.e., low (400–500 masl), mid (500–600 masl), and high (> 600 masl). The leaf samples were collected from seedlings, saplings, and adult trees of P. malaanonan. There was no significant variation in most of the measured leaf traits, leaf area (LA), specific leaf area (SLA), leaf thickness (LT), leaf length-to-width ratio (L:W) across sampling sites, except vein density (VD). The SLA and LT at high elevations are significantly and negatively correlated (r2 = 0.7396). The environmental covariables had a significant (p < 0.05) impact on the leaf traits of P. malaanonan. The observed variation in some leaf traits may have been influenced by the elevation gradient and its associated environmental conditions. Thus, P. malaanonan may have developed adaptive mechanisms to cope with the changing environment. Keywords: conservation, elevational gradients, environmental variables, leaf traits, Parashorea malaanonan
Litter Decomposition of a Deciduous Tectona philippinensis and an Evergreen Parashorea malaanonan Across Contrasting Sites Hernandez, Jonathan Ogayon; Maldia, Lerma San Jose; Tinio, Crusty Estoque; Combalicer, Marilyn Sabalvaro
Jurnal Sylva Lestari Vol. 12 No. 2 (2024): May
Publisher : Department of Forestry, Faculty of Agriculture, University of Lampung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23960/jsl.v12i2.909

Abstract

Litter traits and site conditions alter nutrient inputs from deciduous and evergreen forests by influencing litter decomposition processes. Here, we investigated the leaf and stem mass loss rate (MLR) of a deciduous (Tectona philippinensis) and an evergreen (Parashorea malaanonan) tree species and the factors influencing it through an intersite experiment and litterbag method in secondary forests in Lobo, Batangas and Mount Makiling Forest Reserve (MMFR). Variations in initial litter quality (leaf area, specific leaf area (SLA), leaf thickness, vein density), and site factors (light intensity and temperature) were assessed. P. malaanonan has a lower SLA and vein density than T. philippinensis. The leaf and stem MLR were significantly higher in the mixed litter (44.09–57.83%) than that of a single-species litter of either T. philippinensis (28.16–41.83%) or P. malaanonan (33.60–47.66%). The leaf MLR of T. philippinensis was greater when placed in Lobo (where the litter originated) than at a different site (i.e., MMFR). Moreover, leaf litter decomposition was faster in T. philippinensis than in P. malaanonan, particularly during the rainy season. Overall, the study showed that litter decomposition in deciduous and evergreen differed across sites due to variations in litter quality and environmental variables. Keywords: decomposability traits, home-field advantage (HFA), intersite experiment, litter quality, mass loss rate
Co-Authors Aboc, Vinjoe Magalang Combalicer, Marilyn Sabalvaro Ebale, Marsh Reginald Bico Hernandez, Jonathan Ogayon Luna, Amelita Carpio Maldia, Lerma San Jose Saddoy, John Karlo Cruz