Volume 11, Issue 47 (Vol. 11, No. 47 2023)                   2023, 11(47): 249-266 | Back to browse issues page

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Fahim S, Ghanbari A, Naji A M, Shokohian A A, Maleki Lajayer H. Impact of drought stress on morphological and physiological traits in some Iranian grape cultivars. Plant Process and Function 2023; 11 (47) : 16
URL: http://jispp.iut.ac.ir/article-1-1556-en.html
1- Department of Horticulture, Faculty of Agriculture and Natural Resources, Mohaghegh Ardabili University
2- Department of Horticulture, Faculty of Agriculture and Natural Resources, Mohaghegh Ardabili University , ghanbari66@uma.ac.ir
3- University of Shahed
4- Department of Agriculture, Faculty of Agriculture and Natural Resources, Mohaghegh Ardabili University
Abstract:   (1566 Views)
Lack of rainfall as well as rising temperatures have caused problems in the agricultural crop cultivation in many areas. Grapevine is one of the most important economic products in horticulture. Due to the importance of grapes as important economic products in horticulture, identification and use of resistant cultivars to drought stress is one of the basic steps and the important goals in plant breeding programs. This research was carried out in factorial experiment in randomized complete design with three replications in 2020. Experimental factors included different levels of drought stress and six grapvine cultivars. The results of this study showed that with increasing stress level in 6 grape cultivars, plant growth parameters, RWC, and photosynthetic pigment content decreased significantly (P <0.01), whereas the greatest decrease was observed at the stress level of 25% FC. Also, increasing drought stress levels the EL, MDA, total soluble sugars, proline and antioxidant enzymes content increased in more cultivars, significantly (P <0.01). Increasing drought stress to 25% FC, the highest and lowest leaf area decrease percentage compared to the control were observed in Copake Bogan (68%) and Gharashilig (45%) cultivars, respectively. Among the studied cultivars, the highest and lowest EL content were observed in Aghshilig and Gharashilig cultivars, which had 36% and 32.8%, respectively. The highest proline content was obtained in Gharashilig cultivar (0.14 µmol g-1 FW) and the lowest in Copake Bogan cultivar (0.067 µmol g-1 FW). Also, The highest and lowest catalase enzyme content were obtained in Gharashilig cultivar (3.02 µmol g-1 FW.min) and Copake Bogan (1.41 µmol g-1 FW.min), respectively. The highest peroxidase enzyme content was obtained in Tukilgen (5.86 µmol g-1 FW.min) and the lowest content in Rasmi (1.39 µmol g-1 FW.min) cultivar. Based on the results showed, Aghshiligh and Copake Bogan cultivars were drought-sensitive and Garashiligh cultivars drought-tolerant and the rest are semi-drought sensitive cultivars.
Article number: 16
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Type of Study: Research | Subject: Droughts Stress
Received: 2021/06/30 | Accepted: 2021/10/11 | Published: 2022/05/16

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