PJB-2017-832
BENEFICIAL ROLE OF FOLIAR-APPLIED PROLINE ON CARROT (Daucus carota L.) UNDER NON-STRESS AND SALT STRESS CONDITIONS
MISBAH QIRAT
Abstract
A pot experiment was conducted to appraise the beneficial role of foliar application of proline on two cultivars of carrot (Daucus carota L.) cv. Arwa red long and cv. Red corl grown in pots under salt-stress conditions. There were two levels of salinity i.e. non-stress (0 mM) and salt stress (150 mM NaCl) and three levels of foliar applied proline (0, 5, 10 mM). The imposition of salt stress significantly decreased growth, gas exchange and chlorophyll fluorescence attributes, while it increased activity of antioxidant enzymes and proline contents of both carrot cultivars. Foliar application of proline significantly enhanced growth, gas exchange, chlorophyll fluorescence, activity of peroxidase, shoot and root K+ contents and root Ca2+, and decreased shoot and root Na+ contents of both carrot cultivars. Arva Red Long showed better performance as compared to cultivar Red Corl.
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