Abstract:
Our climate is polluted with different kinds of abiotic factors. Plants are immotile inhabitants of this earth and continuously face different kinds of abiotic stress. One of them is gamma radiation, which seriously affects plants due to their mutagenic property. Such changes are thought to be good for plant health and help to improve varieties because a change in the whole physiology of plants were seen in many cases. Upon interaction with biological matter, gamma rays cause the excitation of macromolecules due to their high energy photon, but alongside gamma rays could cause oxidative stress that produces ROS. The present study was designed to check the toxicity effect of acute gamma radiation on plant physiology and morphology to investigate the effective gamma radiation doses that can be used for the improvement of varieties. Seeds of Cyamposis tetragonoloba were exposed to gamma rays at doses (10 kR,20 kR, 30 kR,40 kR, 50 kR) by Cs137 source except for the control. Antioxidant enzyme (GOPX, CAT) activities were observed to check oxidative stress in different tissues of Cyamposis tetragonoloba (leaves, roots, and stems). Results obtained showed that high doses of 40,50 kR adversely affect the growth and other morphological parameters of the plant. An ANOVA shows significant differences in morphological parameters (P<0.05). Similar changes were also observed in biochemical parameters at 40,50 kR. Maximum GOPX activity was recorded in leaves, roots, and stems at 10 kR ,20 kR, and 40 kR respectively. CAT activity was observed maximum at 50 kR in the roots, stems but in leaves of the control plant. It was concluded that acute gamma irradiation in high doses had harmful effects on the overall growth of C. tetragonoloba, whereas low doses promote growth. So optimum low acute doses (10-30 kR) can be used to improve plant growth varieties without disturbing the homeostasis of plants.
Page(s):
84-84
DOI:
DOI not available
Published:
Journal: Abstract Book on Global Science Technology and Management Conference, Volume: 0, Issue: 0, Year: 2023
Keywords:
CAT
,
Antioxidant Enzyme
,
Gamma rays
,
GOPX
,
Cyamposis tetragonoloba