Biochemical evaluation of sulfur and nitrogen assimilation potential of mustard (Brassica juncea L. Czern. & Coss.) under application of slow-release sulfur fertilizer |
| |
Authors: | Altaf Ahmad Gerard Abraham M. Z. Abdin |
| |
Affiliation: | (1) Centre for Biotechnology, Hamdard University, 110062 New Delhi, India;(2) Centre for Environmental Management for Degraded Ecosystems, University of Delhi, South Campus, Benito Juarez Road, 110 021 New Delhi, India |
| |
Abstract: | Pot experiments were conducted to study the efficacy of a slow sulfur-releasing fertilizer, sulfur glass fritz (SGF 1), on growth, photosynthesis, and sulfur, and nitrogen assimilation potentials of brown mustard (Brassica juncea L. Czern. & Coss. cv. Pusa Jaikisan). Growth as indicated by biomass accumulation slowed down in response to the application of sulfur glass fritz. A similar trend was observed in the case of photosynthesis rate. The activity of two marker enzymes, ATP-sulfurylase and nitrate reductase, showed very low levels of activity, indicating poor assimilation of sulfur and nitrogen by the plant under sulfur glass fritz. It is therefore concluded that the release of sulfur by sulfur glass fritz is too slow and that the initial nonavailability of sulfur to the plants could lead to suboptimization of both sulfur- and nitrogen-assimilating enzymes. These factors may contribute to low rates of photosynthesis and poor growth. |
| |
Keywords: | Mustard gypsum sulfur glass fritz biomass photosynthesis ATP-sulfurylase nitrate reductase slow release sulfur fertilizer |
本文献已被 SpringerLink 等数据库收录! |
|