Effects of Exogenous Calcium and Magnesium on Physio-Hormonal Attributes of Trigonella Foenum-Graecum l. Under Polyethylene Glycol (Peg) Induce Drought Stress

Syed Hidayat Yar; Hussan Ara Begum; Naseen Rafiq; Syed Maqsood Ali; Behram Ali; Ilhanuddin

Authors

Syed Hidayat Yar Department of Botany, Abdul Wali Khan University Mardan, Khyber Pakhtunkhwa, Pakistan
Hussan Ara Begum Department of Botany, Abdul Wali Khan University Mardan, Khyber Pakhtunkhwa, Pakistan
Naseen Rafiq Department of Zoology, Abdul Wali Khan University Mardan, Khyber Pakhtunkhwa, Pakistan
Syed Maqsood Ali Department of Botany, Abdul Wali Khan University Mardan, Khyber Pakhtunkhwa, Pakistan
Behram Ali Department of Botany, Abdul Wali Khan University Mardan, Khyber Pakhtunkhwa, Pakistan
Ilhanuddin Department of Botany, Abdul Wali Khan University Mardan, Khyber Pakhtunkhwa, Pakistan

Keywords:

Stress, Physio-Hormonal Attributes, Calcium, Magnesium, Poly Ethylene Glycol

Abstract

Drought stress is one of the abiotic stresses that adversely affect the plant growth parameters and physio-hormonal attributes. In the current work, we study the adverse effects of induced PEG drought stress in Trigonella foenum-graecum L. in the presence of calcium and magnesium concentration. The experiment was conducted in the botanical garden of Abdul Wali Khan University Mardan in a completely random design. There are eight treatments and one control having each of the trees replicated. The nutrients of calcium and magnesium ratio (4, 2, and 0.18) were added to the plant after 30 days adding the polyethylene glycol of concentration of (0.6 Mpa and 0.2 MPa) for 8 days. The results show that drought stress induced by PEG had a significant effect on the growth and physio-hormonal indices of the plant. It was found that calcium and magnesium both reduce the adverse effects of polyethylene glycol. All treatments helped ascorbic acid, salicylic acid, and auxins to give plant possible growth and development in due time reducing the effects of PEG. Similarly, in enzymatic activities, the maximum lipid peroxidase contents at p >0.05 are found in calcium and magnesium ratio 0.18 and polyethylene glycol 0.2 Mpa. The maximum ascorbic acid peroxidase was found at p>0.05 in Ca/Mg ratio 4. It is concluded from the study that the calcium and magnesium ratio mitigated the adverse effects of polyethylene glycol on Trigonella foenum-graecum L. growth by promoting hormones and enzymatic activities under PEG-induced drought stress.

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