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Colloids Surf B Biointerfaces ; 67(2): 272-5, 2008 Dec 01.
Article in English | MEDLINE | ID: mdl-18838253

ABSTRACT

The present investigation has been carried out to estimate the effect of cobalt on the nodulation leg-haemoglobin content and antioxidant enzyme activities of soybean plants. The experiments were conducted in earthen pots containing 3 kg of air dried soil. The inner surface of pots was lined with polythene sheet. Soybean plants were raised in soil amended with different concentration of cobalt (0, 50, 100, 150, 200 and 250 mg/kg). The root nodule formation, leg-haemoglobin contents and antioxidant enzyme activities were analysed at 15 days intervals, namely 15, 30, 45, 60 and 75 days after sowing (DAS). There found a significant increase in the total number of root nodules, leg-haemoglobin content and antioxidant enzyme activities at 50mg/kg cobalt application in the soil in all the sampling days when compared to control. Further increase in the cobalt level (100-250 mg/kg) in the soil decreased root nodules formation as well as leg-haemoglobin content antioxidant enzyme activities of soybean plants in all the sampling days.


Subject(s)
Antioxidants/metabolism , Cobalt/pharmacology , Glycine max/drug effects , Glycine max/metabolism , Plant Root Nodulation/drug effects , Soil/analysis , Plant Proteins/metabolism , Soil Microbiology
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