Journal of Stress Physiology &
Biochemistry, Vol.
8 No. 4
2012, pp. 98-109 ISSN 1997-0838
Original Text Copyright (cc) 2012 by Raja, Rathaur, John, Ramteke
ORIGINAL
ARTICLE
Data source : Google Scholar
QueryDate : 2016-12-24
Cites : 3
Endosulfan induced changes in
growth rate, pigment composition and photosynthetic activity of
mosquito fern Azolla microphylla
Waseem Raja*, Preeti Rathaur, Suchit
A. John, Pramod W. Ramteke
Stress
Physiology & Environmental Pollution Lab, Department of Biological
Sciences, Sam Higginbottom Institute of Agriculture, Technology and
Sciences Allahabad U.P-211007
This paper is the first in a series
reporting a study on the effects of different concentrations of
insecticide, Endosulfan (0-600ppm) was premeditated on 5th day
after insecticide exposure with respect to growth rate, pigment
composition and photosynthetic activity of Azolla microphylla under laboratory
conditions which become non-target organism in the rice fields.
Endosulfan inhibited the relative growth rate, pigment content and
photosynthetic O2 evolution. Phycocyanin was main target
followed by carotenoid and total chlorophyll. Significant increase in
pigment, flavonoid and Anthocyanin was noticed after six days of
treatment. In contrast to the photosynthetic activity, the rate of
respiration in Azolla
microphylla was increased significantly. Our results show that
Endosulfan at normally recommended field rates and intervals are
seldom deleterious to the beneficial and Eco friendly Azolla microphylla and their
activities and thus in turn suppress plant growth and
development. Phytotoxity of Azolla
microphylla can be minimized by restrictions on application,
timing, method and rate of application.
Key
words: Anthocyanin; Carotenoid; Phytotoxity; Phycocyanin;
insecticide
