Response of cherry tomato seedlings to liquid fertiliser application under water stress
Senad Murtic, Rodoljub Oljaca, Ivana Koleska2, Lutvija Karic, Vida Todorovichttps://doi.org/10.17221/17/2017-HORTSCICitation:Murtic S., Oljaca R., Koleska I., Karic L., Todorovic V. (2018): Response of cherry tomato seedlings to liquid fertiliser application under water stress . Hort. Sci. (Prague), 45: 22-28.
The aim of this study was to examine the impact of different liquid fertilisers on selected physiological parameters in order to evaluate the drought tolerance of cherry tomato seedlings. The following physiological parameters were investigated: total phenolic and flavonoid content, total antioxidant capacity and proline content of leaf extracts. Total phenolic and flavonoid content were determined using the Folin-Ciocalteu and aluminium chloride colorimetric methods, respectively. The ferric-reducing/antioxidant power (FRAP assay) was used to measure the total antioxidant capacity, while proline content was evaluated according to the method of Bates. The contents of proline, total phenolics and flavonoids were significantly higher in the leaves of cherry tomato seedlings exposed to water stress, which suggests that the higher synthesis of these substances by plants represents an important defence mechanism of drought tolerance. The results also indicate that the application of all the used fertilisers in accordance with the manufacturer’s instructions can significantly increase the content of phenol compounds and total antioxidant capacity of plants under normal growth conditions, thus improving survival under subsequent stress.Keywords:
phenolics; proline; drought; osmolytes; antioxidantsReferences:
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