@article { author = {Barzegar, Taher and Moradi, Pouria and Nikbakht, Jaefar and Ghahremani, Zahra}, title = {Physiological Response of Okra cv. Kano to Foliar Application of Putrescine and Humic Acid under Water Deficit Stress}, journal = {International Journal of Horticultural Science and Technology}, volume = {3}, number = {2}, pages = {187-197}, year = {2016}, publisher = {University of Tehran, College of Aburaihan}, issn = {2322-1461}, eissn = {2588-3143}, doi = {10.22059/ijhst.2017.213448.147}, abstract = {To investigate effects of putrescine (Put) and humic acid (HA) on fruit yield and physiological attributes of okra (Abelmoschus esculentus L. 'Kano') under water deficit stress, a field experiment was conducted in split plot based on a randomized complete block design with three replications. Plants were exposed to three different irrigation regimes (33%, 66% and 100% ETc) and were treated with foliar application of Put (0, 0.5, 1 and 1.5 mM) and HA (0, 150 and 300 mg l-1). The results showed that deficit irrigation significantly decreased fruit yield, relative water content (RWC), vitamin C and water use efficiency (WUE), whereas proline content and catalase and peroxidase activities were increased. Foliar application of HA and Put significantly increased fruit yield, RWC, vitamin C and proline contents, catalase and peroxidase activities and WUE. The results suggested that HA at 300 mg l-1 and Put at 1.5 mM can improve growth, yield and quality of okra fruits. }, keywords = {antioxidant enzyme activity,fruit yield,proline,vitamin c,Water use efficiency}, url = {https://ijhst.ut.ac.ir/article_62918.html}, eprint = {https://ijhst.ut.ac.ir/article_62918_a64920d67ee2df69ead36eccc0a96e88.pdf} }