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Dr. Faheema Khan

Associate Professor

Faculty

كليات العلوم
College of Science, Female Section, Building 5: Third floor, Office No-76
المنشورات
مقال فى مجلة
2017

Photosynthetic and antioxidant variability in soybean genotypes under Cadmium stress.

Soybean, the worldwide main source of oil and high protein feeds for the livestock sector has a high cadmium (Cd) accumulation capacity. With this background, the hydroponic culture experiments were conducted to investigate the effects of different concentrations of Cd (0-100 µM) on growth, water relations, photosynthetic variables, oxidative stress, and antioxidant response in two soybean genotypes P-218 and P-898. Ten days old seedlings were subjected to (0-100 µM CdCl2 ) for 15 days. The results indicated that the growth of genotype P-218 was not affected significantly upto 75 µM CdCl2 treatment growth of P-828 was reduced significantly beyond 25 µM CdCl2 treatments. Cd toxicity caused severe impairments in photosynthetic variables like photosynthetic rate, chlorophyll fluorescence and chlorophyll content, in P898 than in P-218. The activities of antioxidant enzymes (superoxide dismutase, catalase, ascorbate peroxidase and glutathione reductase) were higher in P-218 than in P-828 at various levels of Cd treatments. Chlorophyll fluorescence measurements revealed that non-photochemical quenching increased in P-218 and decreased in P-828 whereas the electron transport rate increased under Cd stress in P-828 and decreased in P-218. It is concluded that tolerance capacity of P-218 against Cd can be associated with the capability of this genotype in keeping an active photosynthetic system and strong antioxidant defense system

رقم المجلد
40
رقم الانشاء
3
مجلة/صحيفة
Legume Research
الصفحات
470-477
مزيد من المنشورات
publications

Legumes are important source of protein for teeming human population. These are very sensitive to salt levels and soil drought status, experiencing water deficit due to osmotic stress possibly…

2014
تم النشر فى:
Lambert