Journal Name:
- International Journal of Science and Engineering Investigations
Key Words:
Author Name | University of Author | Faculty of Author |
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Abstract (2. Language):
Ultraviolet radiation is energetically capable of
disrupting proteins. Ultraviolet radiations Are divided into
three bands included UV-A (320-390 nm), UV-B (280-320
nm) and UV-C(254-280nm). Several studies have indicated
that enhanced UV-B radiation can deleteriously affect
physiological processes and overall growth in some plants
species.Bean Sayad and Bean Derakhshan seeds irradiated
with 220 to 400 nm UV rays were grown in incubator for 8
days at 25±°C. Germination, growth (seedling fresh weight,
root shoot length and their ratio), lipid peroxidation, protease
and peroxidase activity were measured in leaves. Results
showed that percent germination of the seeds and the rates of
growth of sprouts were inversely related to the irradiation
doses. In Derakhshan, peroxidase and protease activities (two
folds) and MDA contents were higher as compared to Bean
Sayad while vice versa for protein contents, revealing inherent
differences between two types. Data for protein
contents,peroxidase and protease activities therefore
suggested that irradiation dose should not under 300nm UV
in Bean Derakhshan and also 300nm UV in Bean Sayad. In
Bean Derakhshan 320 to 400 nm UV irradiation dose non-significantly affected the protein contents and peroxidase
activity and uppered MDA contents and protease activity. In
Bean Sayad 300 nm UV irradiation dose increased the
peroxidase activity,uppered the MDA contents and affect the
protein content and protease activity. It was concluded that
protein contents, protease, peroxidase and lipid peroxidation
may be used in early assessment of effectiveness and
superiority of radiation dose to induce mutations
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