Effects of different concentrations of lead chloride on the growth, chlorophyll a and cyto-morphology of the blue green alga, Oscillatoria willei Gardn. Em. drouet (Division cyanophyta).
Date
10-2004
Degree
Bachelor of Science in Biology
Major Course
Major in Cell Biology
College
College of Arts and Sciences (CAS)
Adviser/Committee Chair
Milagrosa, R. Martinez-Goss
Abstract
The effects of different concentrations of lead chloride on the unialgal culture of the blue green alga. Oscillatoria Gardn. em. Drouet. were determined. Test concentrations were: 0ppm (T1), 5ppm (T2), 20ppm (T3). 15ppm (T4). and 20ppm (T5) of lead chloride in BG-11+1\1, a basal inorganic medium. Growth was measured by the increase in diameter of the algal colony taken every 2 days for a period of 6 days. The study showed significant increase in growth of the alga at a = 0.05 especially at 2Oppm. The treatments gave an increasing order of growth: Tl< T2< T3< T4< T5. Optimum growth rate was noted after 2 days of incubation for T5 at 1.0153 doublings per day. Chlorophyll analysis was done at the logarithmic phase of growth of the alga in all treatments. Chlorophyll concentrations showed an increasing trend as the concentration of lead increased. Chlorophyll a was highest for T5 (20ppm PbC'12) with a value of 0.5178 pg/ml. followed by T4, T3, T2. and T1 with values of 0.4605 pg/ml, 0.4319 pg/ml. 0.2112 1.1g/ml, and of 0.1712 1.1g/ml. respectively. More enhanced blue green color was observed as the concentration increased up to a level of 20 ppm of lead chloride. Constrictions in the cross walls of the trichomes were also more prominent as the concentration increased.
Language
English
Location
UPLB Main Library Special Collections Section (USCS)
Call Number
Thesis
Recommended Citation
Arizala, Nesta Gianni N., "Effects of different concentrations of lead chloride on the growth, chlorophyll a and cyto-morphology of the blue green alga, Oscillatoria willei Gardn. Em. drouet (Division cyanophyta)." (2004). Undergraduate Theses. 10687.
https://www.ukdr.uplb.edu.ph/etd-undergrad/10687
Document Type
Thesis