PJB-2017-794
INTERACTIVE EFFECT OF CHROMIUM AND SALINITY ON MORPHO- PHYSIOLOGICAL AND IONIC ATTRIBUTES IN WHEAT (Triticum aestivum L.)
GHULAM HASSAN ABBASI
Abstract
Salinity and chromium (Cr) stresses drastically reduced the crop production worldwide but their combined effects on morpho-physiological and ionic attributes in wheat are not well documented. This study was planned to investigate the effect of chromium (Cr) and NaCl on growth, physiological and ionic traits of two wheat varieties Lasani (V1) and Sahar (V2) under three chromium (control, 15 and 30 µm L-1) and two salinity levels (control and 100 mmol L-1) in solution culture. Salinity stress reduced plant morphological attributes, membrane stability index, chlorophyll and relative water contents while increased accumulation of sodium ions in roots and shoots. The effect of Cr on plant growth and physiological attributes assorted with Cr concentration. Cr at 15 µm L-1 results in mitigating of salt stress by improving plant morpho-physiological attributes and this effect was more prominent in variety Sahar relative to Lasani. The higher levels of Cr (30 µm L-1) and NaCl in combine form caused drastic damage to the plant physiological and ionic attributes resulting in further reduction of plant growth, water relations and photosynthetic pigments as compared to when two stresses applied alone.
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