Abstract
Deterioration of agricultural lands due to salinity is one of the serious threats in irrigated areas of the world. Confronting the influence of salinization in agriculture is a key for achieving food security. Red pepper (Capsicum annuum L.) is not only economically but also nutritionally, important for human diet. A study was conducted to ameliorate the effect of salinity on the production and quality of red pepper by exogenous application of osmolytes. Two potential osmolytes i.e. proline and L- tryptophan were exogenously applied solely and in combination (@ 50 mM and 0.12 mM, respectively). There were three salinity levels i.e. ECe; 0.6, 4.04 and 6.11 dS m-1 . Results showed that plant height, root length, plant biomass and yield were significantly decreased, while significant increase in Na+ and Na+ /K+ ratio was observed with increasing level of salinity. A significant improvement in growth, yield and quality was observed when both osmolytes were exogenously applied under salinity stress. The combined use of proline and L-tryptophan was more effective for reducing the inhibitory effect of salinity as compared to sole application of these osmolytes. It is concluded that the combined application of proline and L-tryptophan (@ 50 mM and 0.12 mM, respectively) was more effective for improving growth of red pepper under normal conditions as well as salinity stressed conditions
Moazzam Jamil, Muhammad Ali Kharal, Maqshoof Ahmad, Ghulam Hassan Abbasi, Farheen Nazli, Azhar Hussain, Muhammad Fakhar-u-Zaman Akhtar. (2018) nducing salinity tolerance in red pepper (Capsicum annuum L.) through exogenous application of proline and L-tryptophan, The Journal Soil & Environment , Volume 37, Issue 2.
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