Özet:

Boron toxicity constitutes a limiting factor on seed germination. Salicylic acid-like plant growth regulators play an important role in alleviation the negative effects of boron stress. The research was carried out to determine the germination properties of seeds (pepper, eggplant, watermelon) with and without salicylic acid (SA) pre-application at different boron (B) concentrations. Experiments were conducted in randomized plots design with 4 replications. Seed germination percentage, mean germination time, germination index and germination energy values were determined under four different SA (0, 0.5, 1.0 and 2.0 mM) and six different B (0, 1.0, 2.0, 4.0, 8.0 and 16.0 mg L-1) doses. The greatest germination percentage, index and energy values and the shortest mean germination time were obtained from 1.0 mg L-1 B dose, on the other hand, increasing B stress negatively influenced germination parameters. Especially at 4.0, 8.0 and 16.0 mg L-1 B stress, 1.0 mM SA supplemented into growing media increased germination parameters of all three vegetable species, reduced the negative effects of boron and positively influenced germination time. Present findings revealed that SA could be used as an efficient tool in alleviation of negative effects of boron toxicity. On the other hand, SA applications were not effective or had quite limited effects on non-B application or low B-application (< 1.0 mg L-1) seeds

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