Abstract:
In this thesis, laser induced fluorescence (LIF) technique,
was tested for detecting changes in cotton plant due to
environmental factors: temperature, time during the day hours
and pollution stress.
Fluorescence measurements were carried out to determine
the fluorescence intensity ratio (FIR) F685/F730 with respect to
change in temperature and during the day hours. It has been
noticed that this ratio(FIR) decreases when temperature
increases. Also the ratio (FIR) decreases when pollution
concentration increases. Laser induced fluorescence can be a
suitable method of monitoring changes in chlorophyll content in
a non-destructive way in cotton plant during physiological
changes during the day hours.
Results of this study demonstrate the capability of early
detection of cotton influences due to air pollution and
environmental stresses, using laser induced fluorescence
technique.
