Effect of salt stress on growth, physio-chemical mechanisms and anatomical alterations of Nigella sativa L
Research Square (Research Square)(2023)
摘要
Abstract Nigella sativa L. ( Black cumin ) is a medicinal plant, well known for its uses as herbal medicine for the treatment of many health conditions like asthma, inflammation and bronchitis. It is an enriched source of protein, antioxidants and oil contents. In this study, Black cumin was studied for the estimation of osmoprotectants and anatomical features under salt stress. Black cumin seeds were obtained from the Ayub Agricultural Research Institute, Faisalabad (AARI). The experiment was planned in the Botanic Research area of Government College Women University Faisalabad. The experimental design was completely Randomized Design (CRD) with three replicates per treatment. After 4 weeks of germination, plants were treated with different concentrations of salt (control, 50, 100, 150 and 200 mM NaCl). After 6 weeks of salt treatment once in week plants were harvested and analyzed for different morpho-physiological, biochemical and anatomical attributes. Results showed that biomass production (fresh and dry weight) and plant height were decreased in Black cumin under salt stress. However, Plants with high to moderate (50 to 200 mM NaCl) salt concentration reduced root epidermal thickness depicting their adaptation strategy under salt stress. Furthermore, the area of the root and stem cortical cells was reduced in all salt-treated plants which avoid water loss during osmotic stress. Increasing salt stress in the growth-medium of Black cumin showed stunted growth and anatomical modifications.
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关键词
salt stress,physio-chemical
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