Morphological Responses in Two Palm Species Against the Elevation of Ultra Violet Radiation Under Ambient Conditions


  • Sajeda Y. Swaid Date Palm Research Centre, University of Basrah, Basrah, Iraq
  • Eman M. Abdul Zahra Biology Department, Science College, Basrah University, Iraq
  • Abdulminam H. Ali Biology Department, Science College, Basrah University, Iraq



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 were almost improved. Where, the highest leaf width was recorded (1.1 and 0.7 cm) respectively. Conversely, UV-treatment (4-10 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 But, date palm (P. dactylifera L.) was capable to survive at high dose of radiation conditions reaches 8 for 30 days.


Download data is not yet available.


Alvarez, J.M., Rocha, J.F., & Machado, S. R. (2008). Bulliform cells in Loudetiopsis chrysothrix (Nees) Conertand Tristachya leiostachya Nees (Poaceae): structure in relation to function. Brazilian Archives of Biology and Technology, 51, 113-119.

Caldwell, M. M., Teramura, A. H., & Tevini, M. (1989). The changing solar ultraviolet, climate and the ecological consequences for higher plant. Trends in Ecolology and Evolution, 4, 363-366. Metrics

de Almeida, S. L., Schmidt, É. C., Rodrigues, A. C., & Bouzon, Z. L. (2012). Effects of Natural Radiation, PAR and Artificial ultraviolet radiation-B on the Ultrastructure and Histochemistry of Leaf of Oryza sativa L. American Journal Plant Sciences, 3, 1361-1368.https ://www .scirp. org/html/3-2600 47124043. htm http://dx .doi. org/10.4236/ ajps.2012.310164

Frohnmeyer, H., & Staiger, D. (2003). Ultraviolet-B radiation-mediated responses in plants: balancing damage and protection. Plant Physiology, 133, 1420–14. https: //

Gonzalez, R., Mepsted, R., Wellburn, A. R., & Paul, N. D. (1998). “Non-photosynthetic mechanisms of growth reduction in pea (Pisum sativum) exposed to UV-B radiation. Plant Cell Environment, 21, 23-32.

Hidema, J., & Kumagai, T. (2006). Sensitivity of rice to ultraviolet-B radiation. Annals of Botany, 97, 933–942.

Hollósy, F. (2002). Effects of ultraviolet radiation on plant cells. Micron, 33, 179-197.

Jenkins, G. I. (2009). Signal transduction in responses to UV-B radiation. Annual Review Plant Biology, 60, 407–431.

Jansen, M. A. K. (2002). Ultraviolet-B radiation effects on plants: induction of morphogenic responses. Physiologia Plantarum, 116, 423–429.

Jansen, M., & Bornman, J. F. (2012). UV-B radiation: from generic stressor to specific regulator. Physiologia Plantarum. 145, 501-504.

Klem, K., Gargallo-Garriga, A., Rattanapichai, W., Oravec, M., Holub, P., Vesela, B., Sardans, J., Peñuelas, J., & Urban, O. (2019). Distinct morphological, physiological, and biochemical responses to light quality in barley leaves and roots. Frontiers in Plant Science, 10, 1-19.

Kakani, V. G., Reddy, K. R., Zhao, D., & Sailaja, K. (2003). Field crop responses to ultraviolet-B radiation: A review. Agricultural and Forest meteorology, 120, 191-218.

Kravets, E. A., Zelena, L. B., Zabara, E. P., & Blume, Y. B. (2012). Adaptation strategy of barley plantsto UV-B radiation. Emirates Journal of Food and Agriculture, 2012. 24, 632-645 10.9755/ ejfa. v24i6.14682

Kumari, R., & Agrawal, S. B. (2010). Supplemental UV-B induced changes in leaf morphology, physiology and secondary metabolites of an Indian aromatic plant Cymbopogon citrates (D. C.) Staph under natural field conditions. International Journal Environmental Science, 67, 655-675. .2010.513828

Liu, B.. Liu, X., Li, Y., & Herbert, S. J. (2013). Effects of enhanced UV-B radiation on seed growth characteristics and yield components in soybean. Field Crops Research, 154, 158-163.

Mao, K., Wang, L., Li, Y-Y., & Wu, R. (2015). Molecular cloning and functional analysis of UV resistance locus8(PeUVR8) from Populus euphratica. PLoS One, 10, 1-18.

Niazwali, S. A. (2016). Examining the growth and performance of the effect of UV-B radiation on United Arab Emirates Date Palm tree (Phoenix dactylifera). M. Sc. Thesis, UAE University, 69pp.https:// /cgi/ viewcontent.cgi?article=1330&context=all_theses

Nogue’s, S., Allen, D. J.; Morison, J. I. L., & Baker, N. R. (1998). Ultraviolet-B Radiation effects on water relations, leaf development and photosynthesis in Droughted Pea Plants. Plant Physiolology, 117, 173-181. .1.173

Rai, K., & Agrawal, S. B. (2017). Effect of UV-radiation on morphological and physiological and biochemical aspects of plants: An overview. Journal Science Research, 61, 87-113.

Rajendiran, K., Vidya, S., Gowsalya, L., & Thiruvarasan, K. (2015). Impact of supplementary UV-B radiation on the morphology, growth and yield of Vignamungo(l.) Hepper var. ADT-3. International Journal of Food, Agriculture and Veterinary Sciences, 5, 104-112.

Sharma, P. K., Amand, P., Sankhalkar, S., & Shetye, R. (1998). Photochemical and biochemical changes in wheat seedlings exposed to supplementary ultraviolet-B radiation. Plant Science, 21, 132-145 .

Singh, S. K., Surabhi, G. K., Gao, W., & Reddy, K. R. (2008). Assessing genotypic variability of cowpea (Vigna unguiculata (L.) Walp.) to current and projected ultraviolet-B radiation. Journal of Photochemistry and Photobiology Biology, 93, 71-81.

Stapleton, A. E. (1992). Ultraviolet Radiation and plants: Burning questions. American Society of Plant Physiologists, 89, 1353-1358.

Tanaka, K., Hayashi, K., Natsume, M., Kamiya, Y., Sakakibara, H., Kawaide, H., & Kasahara, H. (2014). UGT74D1 catalyzes the glucosylation of 2-oxindole-3-acetic acid in the auxin metabolic pathway in Arabidopsis. Plant Cell Physiology, 55, 218-228.

Ulm, R., & Nagy, F. (2005). Signaling and gene regulation in response to ultraviolet light. Current Opinion in Plant Biology, 8, 477–482.

Vanhaelewyn, L., Prinsen, E., Straeten, D. V. D., & Vandenbussche, F. (2016). Hormone-controlled UV-B responses in plants. Journal of Experimental Botany, 67, 4469–4482. 10.1093/jxb/erw261



How to Cite

Swaid, S. Y., Abdul Zahra, E. M., & Ali , A. H. (2020). Morphological Responses in Two Palm Species Against the Elevation of Ultra Violet Radiation Under Ambient Conditions. Basrah J. Agric. Sci., 33(2), 80-94.