Role of Manganese (Mn) in Modulating Physiological and Biochemical Responses of Brinjal (Solanum melongena L.) under Salinity Stress
DOI:
https://doi.org/10.59436/jsiane.467.2583-2093Keywords:
Salinity stress, Manganese, Brinjal (Solanum melongena L.), Alleviating, Growth, Manganese (Mn)Abstract
Salinity stress is a serious constraint in agriculture that adversely affects crop productivity and poses a major threat to global food security. The adoption of appropriate agronomic strategies is essential to mitigate the detrimental effects of salinity stress. In this context, the present study investigated the potential role of Manganese in enhancing the growth and development of brinjal (Solanum melongena L.) under increasing NaCl concentrations. Experiments were performed in two summer seasons in an experimental farm to test the impact of four NaCl levels, 0 mM (control), 10, 25, 50 and 100 mM, and three Manganese levels, including 0 µM (control) 10, 20, and 50 µM and their interaction on growth and yield of brinjal (Solanum melongena L.). The results showed that increasing NaCl levels up 0 to 100 Mm reduced plant growth characteristics, as well as chemical characteristics, especially total chlorophyll, carotenoids and oxidative enzymes culminating in a marked decline in total yield per plant; however, the measured parameters exhibited a significant increase due to the Manganese application of 10 µM and 20 µM besides photosynthetic pigments of leaves enhanced by using Manganese concentration alleviated the adverse impact of NaCl on brinjal plants until 100 mM saline water, reflecting an increase in brinjal yield. However, brinjal showed a progressive decline in the 50 µM concentration of Manganese. The findings underscore the potential of Manganese application in alleviating salinity stress, improving growth performance, and promoting sustainable brinjal production, thereby offering practical and viable solutions for agriculture in salinity-affected regions.
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