Morphological changes of the commercial Saccharum hybrid Co 86032 and Erianthus arundinaceus IK 76-81 during different days of drought stress. Morphological changes of Co 86032 under normal irrigation (a), 5th (b), 10th (c) and 15th (d) day of drought stress and Erianthus arundinaceous under normal irrigation (e), 5th (f), 10th (g) and 15th (h) day of drought, respectively