Keywords:
n P. cinerarian , n P. julifloran , Salinity, Tolerant, Sustainable livelihood
Prosopis, also known as ‘Kalpvriksha’ is an important tree of arid and semi- arid region of Rajasthan. The two species of this genus i.e., Prosopis cineraria and Prosopis juliflora are used as food, fodder, fuel, gums, tannins and medicine. These plants survive under high temperature, salinity and drought conditions when most of the other traditional plants fail to grow. The objective of the study was to estimate the effect of salinity on shoot length, root length, number of leaves, leaf pigments, protein, proline, and soluble carbohydrate contents in Prosopis cineraria and Prosopis juliflora under salinity conditions. The seedlings were treated with salt concentrations ranging from 0 to 300 mM (i.e., 0, 25, 50, 75, 100, 125, 150, 175, 200, 250 and 300 mM). The seedlings were harvested for the experimental work after 15 days. The protein, proline and soluble carbohydrates content of both the plants increased with the increase in salinity. The shoot and root length, number of leaves and leaf pigments of both the plants decreased under salt stress. The results show that with the change in salinity the content of different solutes like proline, protein and soluble carbohydrates and the leaf pigments also changes. The results indicate that the two species under study are highly tolerant to salinity. As these are highly tolerant to salinity and drought, during adverse conditions they are a means of sustainable livelihood to the inhabitants of this desert region.
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Monika Sharma would like to thank CSIR for financial support in the form of Junior research fellowship and senior research fellowship. All the authors would like to thank UGC—CAS for financial support.