Effects of light intensities on growth performance, biomass allocation and chlorophyll content of five tropical deciduous seedlings in Lao PDR
Abstract
Growth performance, biomass allocation and chlorophyll content of Afzelia xylocarpa Craib, Anisoptera costata Korthals, Dalbergia cochinchinensis Pierre, Dipterocarpus alatus Roxb.and G.Don and Hopea odorata Roxb. seedlings were compared under different light intensities (100%, 50-70% and 30-50%) in Lao PDR. Results showed that all species had survival rate above 94% under all light intensity treatments. Root collar diameter growth (RCD) varied significantly among the five species (F=10.91, P=0.0018). Afzelia xylocarpa had significantly higher RCD than other species while A. costata and D. cochinchinensis showed higher RCD under higher light intensity. Height was also affected significantly by light intensities among the species tested (F=4.85, P=0.0223). A. xylocarpa showed better height growth at lower light intensity. The number of leaves showed significant differences among species (F=9.191, P=0.004) but was not significantly different among light intensities (p<0.05). Biomass allocation was not significantly different within and among species (F=3.39, P=0.0665) under different light intensities (F=2.72, P=0.096). Both A. xylocarpa and D. alatus accumulated higher total biomass under 50-70% light intensity compared to other light conditions. Hopea odorata showed increasing biomass with increasing light intensity but A. costata accumulated more biomass at lower light intensity. The experiment also found that total chlorophyll content was significantly different among species (p<0.05). This study showed that each species had different adaptations to light conditions that should be considered in nursery practice for optimum growth of seedlings.
Source or Periodical Title
Journal of Environmental Science and Management
ISSN
1191144
Page
60-67
Document Type
Article
Subject
Biomass, Chlorophyll content, Growth, Light intensity, Tropical deciduous seedlings
Recommended Citation
Phonguodume, Chanhsamone; Lee, Don Koo; Sawathvong, Silavanh; Park, Yeong Dae; Ho, Wai Mun; and Combalicer, Edwin A., "Effects of light intensities on growth performance, biomass allocation and chlorophyll content of five tropical deciduous seedlings in Lao PDR" (2021). Journal Article. 2259.
https://www.ukdr.uplb.edu.ph/journal-articles/2259
