1Guest Faculty, Government Post Graduate College, Shivpore, Madhya Pradesh, India
2Research Scholar, School of Studies in Botany, Jiwaji University, Gwalior-474011, Madhya Pradesh, India
3Professor, School of Studies in Botany, Jiwaji University, Gwalior-474011, Madhya Pradesh, India
*Corresponding author email id: ahangerma@gmail.com
Pot experiments were conducted to find out the effectivity of different potassium salts on certain components of nitrogen metabolism, antioxidant system and ultimately on growth and yield of Trigonella foenum-graecum L. Varying doses (20, 40, and 60 kg ha–1) of three potassium salts i.e., K2O, KCl and KNO3 were applied and analysis was done at two different developmental stages i.e., vegetative (25 DAS) and pre-flowering (40 DAS). Supplementation of potassium resulted in obvious increase in growth and activity of antioxidant enzymes and the contents of total phenols and tannins. Potassium application resulted in considerable increase in synthesis of osmolytes and also enhanced the activity of nitrate reductase and aminotransferases indicating improved nitrogen assimilation in potassium supplied plants. The results indicate that potassium supplementation may contribute to enhanced growth and yield of T. foenum-graecum L. by modulating nitrogen assimilation and the antioxidant metabolism.
Potassium, Trigonella foenum-graecum L, Antioxidants, Nitrate reductase, Aminotransferases, Polyphenols, DAS – Days after sowing, kg ha–1 – Kilogram per hectare, AsAT – Aspartate aminotransferase, AlaAT – Alanine aminotransferase, PVP – Polyvinyl pyrrolidone, EDTA – Ethylenediamine tetra acetic acid, NBT – Nitro blue tetrazolium, DNPH – 2,4-Dinitrophenyl Hydrazine, AgNO3 – Silver nitrate
