Title

Physiological and biochemical responses of summer peanut [Arachis hypogaea L.) to nitrogen, sulphur and bhizobium combinations

Document Type

Article

Abstract

Research experiments were conducted to resolve the physiological and biochemical basis of the effect of nitrogen (N) sulphur (S) and Rhizobium application on summer Arachis hypogaea L. Six treatments were applied in different N and S combination. Nitrate reductase (NR) activity and ATP-sulphurylase activity in the leaves were determined at various phonological stages, as the two enzymes catalyze rate-limiting steps of the assimilatory pathways of nitrate and sulphate, respectively. The highest NR activity, ATP-sulphurylase activity and yield component were achieved with the treatment T4. Slightly differences from this treatment decreased the activity of these enzymes, resulting in decreases of the seed yield in Arachis hypogaea L. The maximum seed yield achieved in Arachis hypogaea L. at treatment T 4 could be due to optimization of leaf soluble protein and photosynthetic rate, as these factors are influenced by S and N assimilation.

Keywords

ATP-sulphurylase, Bhizobium, Nitrate reductase, Nitrogen, Sulphur

Publication Date

12-1-2013

Publication Title

Journal of Pure and Applied Microbiology

ISSN

09737510

Volume

7

Issue

4

First Page

3171

Last Page

3176

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