Growth and biochemical parameters of Cicer arietinum L. grown on amended fly ash |
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Authors: | D K Gupta R D Tripathi U N Rai S Mishra S Srivastava S Dwivedi F J M Maathuis |
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Institution: | (1) Department of Biology Area 9, University of York, York, YO10-55D, UK;(2) Ecotoxicology and Bioremediation Group, National Botanical Research Institute, Rana Pratap Marg, Lucknow, 226-001, India |
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Abstract: | Growth and metal accumulation were investigated in two Cicer arietinum L. varieties (var. CSG-8962 and var. C-235) when grown in various combinations of fly ash (FA) amended with garden soil (GS),
press mud (PM) or saw dust (SD). In addition, the levels of photosynthetic pigments, nitrate reductase (NR) activity, cysteine,
non-protein thiols (NP-SH), and ascorbic acid were studied. FA amended with GS or PM led to a 5–10 times increase in biomass
compared to FA control and was most pronounced in the less metal tolerant variety CSG-8962. Amendment of FA with either GS
or PM only moderately increased the contents of some essential metals whereas the non-essential Cd and Cr remained similar
or decreased slightly compared to FA control. FA combined with either GS or PM increased the amount of photosynthetic pigments
and was largely absent when SD was added to FA. Improved nitrogen availability led to increased nitrate reductase (NR) activity
with all amendments but less so with SD. Metal stress indicating parameters were generally reduced (cysteine and non-protein
thiols) or unchanged (ascorbic acid). In conclusion, of the tested ameliorants both GS and PM greatly improved growth of C. arietinum making FA a suitable component of plant growth substrates. |
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Keywords: | Ascorbic acid Cicer arietinum Cysteine Fly ash Nitrate reductase |
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