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Variations of Chlorophyll, Proline, and Abscisic Acid (ABA) Contents in Grapevines (Vitis Vinifera L.) Under Water Deficit Conditions

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Abstract

The aim of the research was to determine the impact of regulated deficit irrigations (RDIs) on the accumulation of chlorophyll, proline, and abscisic acid (ABA) in grapevines. Cuttings of Vitis vinifera L. cv ‘Adakarası,’ ‘Papazkarası,’ ‘Karasakız,’ ‘Karalahana,’ ‘Yapıncak,’ ‘Vasilaki,’ ‘Cabernet Sauvignon,’ and ‘Sauvignon Blanc’ were treated to different RDIs that were applied by reducing the maximum irrigation amount by 0%, 25%, 50%, and 75% according to reference evapotranspiration (ETo) under semi-controlled conditions over 2 years. ‘Karalahana’ and ‘Sauvignon Blanc’ cultivars reached the highest chlorophyl la (Chla) in the mean of 2 years. The highest total chlorophyll (Chltot) was determined in ‘Karalahana’ cultivar. The lowest Chltot was determined in ‘Adakarası’ cultivar. The proline with lower RDIs increased in 2019. In 2020, a relationship was discovered whereby, contrary to the previous year, RD4 indicated the least content of proline. The highest ABA among RDIs was determined in the RD4, but was not statistically significant. Leaf ABA was higher in 2019 in the mean of all cultivars and all RDIs. The impact of RDIs on ABA varied according to the cultivar and year. ‘Adakarası’ cultivar, like ‘Cabernet Sauvignon’ cultivar, may adjust its metabolic process to a decrease in water supply. ‘Karasakız’ cultivar also appears to be promising in terms of drought resilience.

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Acknowledgements

The authors would like to thank all editors, reviewers, and the agronomists Jannat Khan, Ecem Kübra Demirkapı, and Şevval Vural for their contribution to the field and laboratory works. Authors would also like to thank Sigfrido Romeo for corrections in the text.

Funding

This study was carried out under the project TAGEM/BBAD/B/19/A1/P6/06, which was supported and funded by the General Directorate of Agricultural Research and Policies of the Republic of Turkey Ministry of Agriculture and Forestry.

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Authors S. Candar and E. Bahar planned and designed the trial. S. Candar performed the field experiments and made statistical analysis. G.U. Seçkin performed laboratory analyzes. T. Kizildeniz, İ. Korkutal and E. Bahar made critical revisions of the manuscript for intellectual content. All authors read and approved the final manuscript.

Corresponding author

Correspondence to Serkan Candar.

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Conflict of interest

S. Candar, G.U. Seçkin, T. Kizildeniz, İ. Korkutal, and E. Bahar declare that they have no competing interests.

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Candar, S., Seçkin, G.U., Kizildeniz, T. et al. Variations of Chlorophyll, Proline, and Abscisic Acid (ABA) Contents in Grapevines (Vitis Vinifera L.) Under Water Deficit Conditions. Erwerbs-Obstbau 65, 1965–1977 (2023). https://doi.org/10.1007/s10341-023-00875-y

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