Effect of Light Intensity on the Growth of Tape-grass (Vallisneria spiralis L.)

  • Supamas Sriwongpuk, Sawat Pimsuwan, Dowroong Watcharinrat, Khongdet Phasinam
Keywords: LED-light intensity, Growth, Tape grass, Vallisneria spiralis L.

Abstract

Tape grass, scientifically referred to as Vallisneria spiralis L. and commonly known as eelgrass or straight vallis, is a plant in the Hydrocharitaceae family. As this aquatic species is widely used to decorate indoor aquariums, it requires alternatives to natural light. Among those, light-emitting diodes or LEDs have gained in popularity. Although LEDs effectively provide supplementary light and reduce underwater light instability hindering plant growth, the determination of their intensity is an important consideration. Therefore, the objective of this research was to examine the effects of LED-light intensity on the growth of Vallisneria spiralis L. The light intensity was varied across five levels: 6,000 lux (control; sun light), 1,000 lux, 2,000 lux, 3,000 lux, and 4,000 lux. It was found that the light intensity of 4,000 lux contributed to the highest growth with the leaf width equaling 0.69 cm, the number of leaves reaching 15.94, and the number of turions being 6.56. In addition, the light intensity of 2,000 lux resulted in the largest leaf length of 57.75 cm. The differences in the indicators of growth from the light intensity levels under examination were statistically significant

Published
2021-07-16
How to Cite
Khongdet Phasinam, S. S. S. P. D. W. (2021). Effect of Light Intensity on the Growth of Tape-grass (Vallisneria spiralis L.). Design Engineering, 3228- 3235. Retrieved from http://www.thedesignengineering.com/index.php/DE/article/view/2742
Section
Articles