Abstract:
Salinity is a term that is often used as a group of different salts that have been associated with contamination and potential toxicity of soil. Salinity is a great threat to different types of crops especially to oil seed crops. Application of Phytohormones is an emerging technique that can ameliorate the toxic effects of salts in soil that can retard plant growth and yield. This study was conducted to check the ameliorative potential of salicylic acid against NaCl, MgCl2 salt stress on morpho-anatomical parameters of Linum usitatissimum L. A pot experiment was performed with three replicates and three treatments. Five different levels of NaCl and MgCl2 with and without growth regulator (salicylic acid 15µM) were used in this experiment i.e. 0mM(T0), 50mM(T1), 100mM(T2), 150mM(T3), 200mM(T4). Results of this study indicated a clear decline in morphoanatomical parameters of NaCl treated plants as compared to MgCl2 treated plants. Low salt concentration had little or no effect on plant morpho-anatomical parameters but significant reduction was observed at highest salinity level (200mM). Higher levels of salinity caused a reduction in plant height, shoot length, number of leaves per plant, flowers and yield density. Anatomical changes were also noticed in terms of epidermal thickness, cortical cell area, vascular bundle area and reduced pith size. It was concluded that the reduction in water uptake in plants during high salinity created osmotic stress and ion toxicity leading to smaller cell size and cell injury. Exogenous application of salicylic acid appeared to induce protective measures as better growth and yield of plant in response to saline conditions. Salicylic acid showed better results under low and moderate levels of salinity by enhancing cell elongation. Based on these results, salicylic acid had no prominent effect on growth of Linum usitatissimum L. at higher salt levels. However, at lower concentrations of sodium and magnesium plants showed positive behavior and enhanced plant growth.
Page(s):
133-133
DOI:
DOI not available
Published:
Journal: Abstract Book on Global Science Technology and Management Conference, Volume: 0, Issue: 0, Year: 2023
Keywords:
salicylic acid
,
Ameliorative effects
,
Magnesium Salt stress
,
Linseed Linum usitatissimum L