Provenance Variation in Acacia nilotica : Free-proline Content in Leaves

Free-proline content in plants increases due to various reasons of which abiotic stress is one. Under non-stress condition certain level of tree-proline is maintained. On the basis of which stressed and unstressed plants are compared. The free-proline level of unstreased plants has been found to vary again. This variation helps comparison among unstressed plant groups. Present lnvestigation is a comparative study of different provenances for their free-proline content in leaves of Acacia nilotica.