Morphological Responses in Two Palm Species Against the Elevation of Ultra Violet Radiation Under Ambient Conditions
Keywords:Arecaceae, Phoenix dactylifera, Washingtonia filifera, Morphological responses, UV-B
Present study was investigate the effect of different UV-doses on morphological defending system features of two palm species Phoenix dactylifera L. and Washingtonia filifera (Lindl.) H. Wendl. The results showed that the morphological and biomass traits of both palm species grown for 30 days under UV-B with a rate of 2 hrs.day-1 were almost improved. Where, the highest leaf width was recorded (1.1 and 0.7 cm) respectively. Conversely, UV-treatment (4-10 hrs.day-1) has adversely affected on almost morphological and biomass features of both species. Where, the less leaf widths were recorded 0.95, 0.8, 0.73, 0.45, 0.43 and 0.40 cm in both palm species. Besides, results also spotted changes in leaf’s surface appearances. However, present investigation concluded that morphological features and biomass of both species were unaffected with low dose of UV-radiation (2 hrs.day-1). But, date palm (P. dactylifera L.) was capable to survive at high dose of radiation conditions reaches 8 hrs.day-1 for 30 days.
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