Influence of Phosphorus and Molybdenum on Ammonia Assimilating Enzymes in Sesbania Rostrata

Dr.Sivagami Srinivasan; Dr. P.RADHA

Volume : III, Issue : V, May - 2014

Influence of Phosphorus and Molybdenum on Ammonia Assimilating Enzymes in Sesbania Rostrata

Dr. Sivagami Srinivasan, Dr. P. Radha

Abstract :

A pot culture study was carried out to evaluate the influence of phosphorus and molybdenum on the activities of ammonia assimilating enzymes, glutamate dehydrogenase, glutamate synthase and glutamine synthetase in completely randomized block design with four replications for each treatment. The treatment consists of the addition of two levels of phosphorus and molybdenum, both individually and in combination. The activity of glutamate dehydrogenase was highly influenced by the application of higher level of phosphorus in both the root and shoot of S.rostrata. The application of molybdenum at the lower concentration was effective in improving the glutamate synthase activity in the root, whereas the higher concentration of phosphorus was effective in the shoot. The glutamine synthetase activity in the root was elevated several fold by the dual application of phosphorus and molybdenum at both the levels, whereas the individual application of phosphorus at higher level was effective in the shoot. Thus the application of phosphorus and molybdenum improved the activities of the ammonia assimilating enzymes in the green manure S.rostrata.