Environmental Studies Including the Effect of Gamma Irradiation on Growth and Some Biochemical Processes of Some Egyptian Plants
Wael El-Desouky Ibrahim El-Desouky;
Abstract
According to the wide utilization of gamma irradiation in agriCulture. their side effects were deeply investigated. Our investigation in this lield covered two main pa11s: In the tirst part. the effects of gamma, irradiation with different doses on two important Egyptian crops. corn: and soybean were investigated. Different doses of gamma irradiation: (25. 50. 100. 150.200.250 and 300 Gy) for corn and (5. 10. 20. 30. 40..
50. 80 and I 00 Gy) for soybean \\•ere studied regarding the effects on yield and chemical composition of grai.ns and seeds. In the second part. the corn plants were used as a bioindicator for radioactive. contamination. Doses of 150 and 40 Gy gave the highest germination percentage (I 00%) for corn grains and soybean seeds respectively after
3 and 4 days compared with the control. Also. 150 and 40 Gy increased.
Photosynthetic pigments. total hydrolysable carbohydrates. total soluble sugars. reducing sugars. non-reducing sugars. nucleic acids and: proteins after 46 days from germination in corn and soybean leaves. It was cleared that corn yield was increased to 131.45% at 150 Gy. while soybean yield increased to 120.56% at 40 Gy. The soluble proteins in corn grains and soybean seeds were analyzed using SDS-PAGE. It \\•as found that protein palterns were not affected in corn grains but on soybean seeds all doses produced a new protein with molecular weight of 16.52 KDa. Saturated fatty acids percentages "•ere increased with increasing the dose level and at the same time unsaturated fatty acids were decreased. While. unsaponifiable matters such as sterols were decreased with increasing the dose in corn grains and soybean seeds. It may be concluded that. the use of gamma irradiation with dose 150 Gy significantly increased the germination percentage. chemical constituents and grains yield of corn grains. The same trend was found in soybean plant with dose of 40 Gy. The second pa11 comprised the use of corn plants as bioindicator for radioactive contamination or heavy metals pollution. It was found that phorosymhetic pigments. carbohydrates. nucleic acids and protein contents were all decreased sharply with increasing the concenlration of uranium nitrate. While. the resistant enzymes peroxidase and polyphenyl oxidase highly increased with increasing lhe concentration. It could be recommended to use 150
Gy for corn crop and 40 Gy for soybean crop because these doses gave
' the highest yield lor grains and seeds for both crops.
50. 80 and I 00 Gy) for soybean \\•ere studied regarding the effects on yield and chemical composition of grai.ns and seeds. In the second part. the corn plants were used as a bioindicator for radioactive. contamination. Doses of 150 and 40 Gy gave the highest germination percentage (I 00%) for corn grains and soybean seeds respectively after
3 and 4 days compared with the control. Also. 150 and 40 Gy increased.
Photosynthetic pigments. total hydrolysable carbohydrates. total soluble sugars. reducing sugars. non-reducing sugars. nucleic acids and: proteins after 46 days from germination in corn and soybean leaves. It was cleared that corn yield was increased to 131.45% at 150 Gy. while soybean yield increased to 120.56% at 40 Gy. The soluble proteins in corn grains and soybean seeds were analyzed using SDS-PAGE. It \\•as found that protein palterns were not affected in corn grains but on soybean seeds all doses produced a new protein with molecular weight of 16.52 KDa. Saturated fatty acids percentages "•ere increased with increasing the dose level and at the same time unsaturated fatty acids were decreased. While. unsaponifiable matters such as sterols were decreased with increasing the dose in corn grains and soybean seeds. It may be concluded that. the use of gamma irradiation with dose 150 Gy significantly increased the germination percentage. chemical constituents and grains yield of corn grains. The same trend was found in soybean plant with dose of 40 Gy. The second pa11 comprised the use of corn plants as bioindicator for radioactive contamination or heavy metals pollution. It was found that phorosymhetic pigments. carbohydrates. nucleic acids and protein contents were all decreased sharply with increasing the concenlration of uranium nitrate. While. the resistant enzymes peroxidase and polyphenyl oxidase highly increased with increasing lhe concentration. It could be recommended to use 150
Gy for corn crop and 40 Gy for soybean crop because these doses gave
' the highest yield lor grains and seeds for both crops.
Other data
| Title | Environmental Studies Including the Effect of Gamma Irradiation on Growth and Some Biochemical Processes of Some Egyptian Plants | Other Titles | دراسات بيئية تتضمن تأثير التشعيع الجامى على النمو وبعض العمليات الكيميائية الحيوية لبعض النباتات المصرية | Authors | Wael El-Desouky Ibrahim El-Desouky | Issue Date | 2005 |
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