The Effects of Salinity Stress on Seed Germination and Seedling Growth of Three Medicinal Plants
Journal Title: International Journal of Farming and Allied Sciences - Year 2014, Vol 3, Issue 3
Abstract
Plants in natural and agricultural conditions are continuously exposed to several biotic and abiotic stresses such as drought, salinity. Salinity is one of the important problem affecting seed germination and plant growth especially in many area of the world. Seed germination is the most sensitive stage to abiotic stresses in medicinal plants which are negatively affected by environmental conditions like salinity. This study was performed to study the effects of salinity stress at critical stage of plant life (seed germination). The effect of salinity stress in form of NaCl at three levels of zero, 5.3, and 8.48 gL-1 on germination and seedling growth of three important medicinal plants. Germination rate and percentage, root length, shoot length, root to shoot length and, root to shoot dry weight ratios, root fresh weight and shoot fresh weight were estimated. Obtained results indicated that salinity decreased germination rate and percentage at the severe salinity level, but increase in these traits were observed in moderate salinity level. We observed different trends in other traits in these three plants. In general, marshmallow has the highest level of drought tolerance in comparison to other plants, especially at moderate NaCl level. In general, it has been concluded medicinal plants studied in this experiment have higher tolerance compared to crop plants at moderate salt levels.
Authors and Affiliations
Saba Siadat Jamian, Sadegh Mehrani, Kamal Sadat Asilan, Avishan Taherkhanchi Tabrizi and Alireza Goharian
Keywords
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