Abstract:
The toxic effects of chromium in plants, animals an
d human beings in the environment
have been widely studied. In the present study, pot
experiment was conducted to
determine the effects of chromium on photosynthetic
pigments, Nitrate Reductase (NR)
activity and total amino acid, proline, total prote
in and leghaemoglobin content of
Sesbania grandiflora
(L.) Pers. The seedlings were treated with Chromiu
m Cr (VI),
concentrations ranging from 0.38-1.92 mM Kg
-1
of soil with 0.35 mM Ethylene Diamine
Tetra Acetic acid (EDTA) and without EDTA. The effi
cacy of EDTA in its presence and
absence was compared for periods of 30, 60 and 90 d
ays. Our results in comparison with
our control indicate the inhibitory effect of chrom
ium to
S.grandiflora
. From the results it
has been observed that, increasing concentrations o
f chromium in the presence of EDTA
showed a significant increase in proline and total
amino acid contents, while the total
chlorophyll, leghaemoglobin content and total prote
in content decreased and the NR
activity of the plant was also affected greatly.
Keywords:
Chromium, EDTA, Nitrate reductase, Photosynthetic
pigment,
Sesbania
