Document Type : Research Paper
Authors
1
Seed and Plant Improvement Institute (SPII), Agricultural Research, Education and Extension Organization (AREEO), Vegetable Department, Karaj, Iran.
2
Department of Cell & Molecular Biology, Factually of Life Sciences & Biotechnology, Shahid Beheshti university, Tehran, Iran.
3
Rural Cooperative Organization, Tehran, Iran.
4
Horticulture Crops Research Department, Ardabil Agricultural and Natural Resources, Research Centre, AREEO, Ardabil, Iran
5
Department of Cell & Molecular Biology, Faculty of Life Sciences & Biotechnology, Shahid Beheshti University, Tehran, Iran.
10.30473/cb.2025.72772.1988
Abstract
To investigate the effect of water stress on some essential traits of potato, an experiment was conducted in 2019 in Karaj using a factorial design within a completely randomized block design with three replications. The first factor included two irrigation treatments (water stress and control), and the second factor consisted of 11 potato genotypes (Agria, Caesar, Savalan, Santé, Marfona, Milva, Picasso, Hermes, Jelly, 397081-1 (1-81), 397069-2 (2-69)). Drip irrigation was applied under normal conditions, while irrigation was stopped for 25 days during the tuberization stage to create water stress, with the stress level being 50% of the field's soil water holding capacity during this period. Irrigation treatments and genotypes showed significant differences (p < 0.01) for biological yield, total tuber yield, specific gravity, dry matter, biological yield, tuber number, tuber yield, and number of tubers smaller than 35 mm, number of tubers larger than 55 mm, and tubers between 35 to 55 mm in size. The number of tubers larger than 55 mm was higher under both water stress and normal conditions, indicating the market preference for the Hermes variety and clone 397069-2 (2-69). Based on the results, the Hermes variety and clone 397069-2 were identified as the most drought-tolerant varieties, showing higher total and biological yields under water stress conditions. The findings of this study can recommend suitable varieties for economic potato production and contribute to improving income and food security in Iran.
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