Özet:

This study aimed to determine the germination and seedling development responses of common vetch (Vicia sativa L.) varieties under drought stress and identify sensitive/tolerant varieties. The study was conducted at the Laboratory of the Department of Field Crops, Faculty of Agriculture, Siirt University. Artificial drought stress was induced using polyethylene glycol (PEG-6000) material. The plant material for the study consisted of the following common vetch varieties: Görkem, Kralkızı, Özveren, Dicle, Alper, Doruk, Kubilay-82, D-135, IFVS-715, and Alınoğlu-2001. These varieties were germinated under different drought (PEG-6000) levels (0%, 5%, 10%, 15%, and 20%). The laboratory experiment was conducted with a randomized split-plot design, with four replications. In the research, parameters such as germination percentage, mean germination time, germination index, germination uniformity coefficient, radicle and hypocotyl length, lateral root number and length, seedling fresh and dry weights, and seedling vigor index were examined. Increasing drought levels significantly (p<0.01) affected germination and seedling characteristics of common vetch varieties. The effects of drought stress were observed from the 10% PEG level for germination percentage and from the 5% PEG concentration for all other parameters. According to the research findings, the tolerance of varieties to drought levels also varied. Among the common vetch varieties, Dicle, Alınoğlu-2001, and Kralkızı showed higher tolerance to drought in terms of germination and seedling development parameters compared to other varieties. Considering genotypic differences, the use of drought-resistant varieties is important in common vetch cultivation in drought-affected areas.

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