Abstract
AbstractExcess cadmium accumulation in shoot decreases the photosynthetic attributes and the activity of carbonic anhydrase (CA; E.C. 4.2.1.1) thereby retarding plant growth metabolism, in a cultivar dependent manner. Two mustard (Brassica juncea) varieties were treated with increasing cadmium doses (0, 25, 50 or 100 mg CdCl2 kg−1 of soil) in the soil in a net house. The photosynthetic features, activity of CA, and the yield attributes were recorded in association with morphological characters. A clear-cut difference in these features was noted among the varieties, where Varuna excelled in its resistance to the cadmium toxicity with better growth and yield, at harvest.
Highlights
Brassica juncea [L] Czern. & Coss. besides an important oil crop is widely used as green vegetable and condiment
The higher level of cadmium contamination induces toxic responses in mustards plants based on genotypic differences in uptake and distribution
Irfan did his PhD under the supervision of Shamsul Hayat analyzing the role of mustard varieties under cadmium stress and their amelioration using nitric oxide and brassinosteroid analogs as plant growth regulator
Summary
Brassica juncea [L] Czern. & Coss. (family: Brassicaceae) besides an important oil crop is widely used as green vegetable and condiment. (family: Brassicaceae) besides an important oil crop is widely used as green vegetable and condiment. The species of B. juncea (mustard) are well-known heavy metal accumulators, cadmium. The higher level of cadmium contamination induces toxic responses in mustards plants based on genotypic differences in uptake and distribution Our research group at Department of Botany, Aligarh Muslim University, Aligarh, India is working on plant stress physiological responses of crop plants and their amelioration using plant growth regulators including recently recognized phytohormones. Irfan did his PhD under the supervision of Shamsul Hayat analyzing the role of mustard varieties under cadmium stress and their amelioration using nitric oxide and brassinosteroid analogs as plant growth regulator
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