Naslov
Biochemical and physiological responses to drought stress between commercial and old apple cultivars

Autori
Mihaljević, Ines ; Viljevac Vuletić, Marija ; Tomaš, Vesna ; Dugalić, Krunoslav ; Horvat, Daniela ; Josipović, Marko ; Vuković, Dominik

Vrsta, podvrsta i kategorija rada
Sažeci sa skupova, sažetak, znanstveni

Izvornik
Book of abstract of 55th Croatian & 15th International Symposium on Agriculture / Mioč B, Širić I - Zagreb : Grafo-Mark, 2020, 275-276

Skup
55. hrvatski i 15. međunarodni simpozij agronoma

Mjesto i datum
Vodice, Hrvatska, 16.02.2020. - 21.02.2020

Vrsta sudjelovanja
Predavanje

Vrsta recenzije
Međunarodna recenzija

Ključne riječi
Ključne riječi: suša, jabuka, fotosustav II, MDA, prolin, peroksid
(drought, apple, photosystem II, MDA, proline, peroxide)

Sažetak
Drought stress is one of the most important abiotic factors which negatively affects on many metabolic processes in plants and yield. It is very important the ability of tolerant plants to defend against oxidative stress as part of drought stress. In this study the biochemical and physiological responses of three apple cultivars ('Golden Delicious Reinders' as commercial cultivar and 'Crvenka' and 'Dugara' as old cultivars) under drought stress were evaluated. Selected cultivars were grown in the greenhouse, in pots, filled with soil. Oxidative stress responses were compared in leaf samples of experimental plants (without irrigation) and control plants for 12 days. Proline, hydrogen peroxide (H2O2) content, malondialdehyde (MDA), phenolic content, photosynthetic performance (PIabs), maximum quantum yield of PS II (Fv/Fm), chlorophyll and dry matter (DW) content were determined. After 12 days of experiment the 'Golden Delicious Reinders' showed the highest decrease of PIABS (1.95), Fv/Fm (0.77) and chlorophyll content (4.25 mg/g FW). Also, it showed the highest proline (1.69 µmol/g FW), peroxide (5.64 µmol/g FW), phenols (25.88 mg GAE/g FW), dry matter (47.70 %) content and highest level of lipid peroxidation rate (15.19 nmol/g FW) compared to 'Crvenka' and 'Dugara'. Thus, it can be concluded that old cultivars 'Crvenka' and 'Dugara' have better adaptability to drought than 'Golden Delicious Reinders' cultivar.

Izvorni jezik
Engleski

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