Abstract: | Drought stress has become more common in recent years as a result of climate change impacts on the productionof banana crops and other fruit trees. The growth and productivity of Musa spp are severely impacted by the gradual degradation of water resources and the erratic distribution pattern of annual precipitation amount. The aimof the work includes increased drought tolerance in light of water scarcity in the world as a result of the bananas’being gluttonous for water needs. This investigation was carried out from 2019 to 2020 to study the effect ofpotassium silicate on morphological growth and biochemical parameters of Musa acuminata L under droughtstress by PEG. As a result, drought stress reduced the morphological characteristics such as shoots number, shootlength, roots number, and survival percentage and biochemical characteristics such as chlorophyll a, b, carotenoids, stomatal status, and RWC. While proline content increased in the leaf of M. acuminata L. Media complemented with K2SiO3 (2 to 6 mM) either individually or in combination with PEG led to an improvement in allmorphological and biochemical characteristics. The activities of CAT, POD, and PPO enzymes increased signifi-cantly compared to control. Furthermore, the lowest PPO, CAT, and POD activity were achieved. Additionally,K2SiO3 treatments under drought stress successfully enhanced the leaf stomatal behavior. Our results suggest thatK2SiO3 can help to maintain plant integrity in the tested cultivar under drought stress. |