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Application of Benzylaminopurine with Methyl Jasmonate and Epibrassinolide Improved Growth and Physio-biochemical Attributes of Strawberry (Fragaria × ananassa cv. ‘Albion’)

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Abstract

Previous studies mainly focused on the effectiveness of benzylaminopurine (BAP) on the vegetative growth of the strawberry plant and the application of methyl jasmonate (MeJA) and epibrassinolide (EBR) at postharvest. Moreover, plant growth regulators (PGRs) have usually been sprayed on the whole plant, and the application of PGRs on different plant organs is rarely discussed in strawberries. Therefore, the effects of BAP, MeJA, and EBR as preharvest treatments on the strawberry fruits’ plant growth and quality indices of cv. ‘Albion’ was investigated. Also, MeJA and EBR leaf spraying with fruit spraying or their combinations were compared. Based on the results, leaf parameters and crown diameter were significantly affected by BAP. Treatment with 100 mg L−1 BAP followed by whole-plant spraying with 200 μM MeJA increased yield and produced greater fruit weight with the longest shelf-life. Also, regardless of the site of application, this treatment increased fruit number and the ratio of total soluble solids to titratable acidity, and enhanced total phenolic and flavonoid contents and phenylalanine ammonia-lyase (PAL) enzyme activity. MeJA at 200 µM improved ascorbic acid, total anthocyanin contents, and total antioxidant activity. EBR had no significant effect on the studied characteristics except fruit weight. BAP had beneficial effects on most of the traits at harvest. Preharvest whole-plant spraying of MeJA, a biosafe phytohormone, promisingly improved strawberries’ commercial and nutritional properties compared to EBR.

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Acknowledgements

The authors would like to thank Dr. Rezvanolsadat Kazeroonian for proofreading the manuscript.

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Sepideh Kalateh Jari and Babak Motesharezade contributed to the study conception and design; Farzad Asgari evaluated and measured the studied attributes, wrote the first draft of the manuscript, and prepared the figures; Marzieh Ghanbari Jahromi contributed to preparing and suggesting the protocols; Weria Weisany analyzed the data. All authors commented on previous versions and approved the final manuscript.

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Correspondence to Sepideh Kalateh Jari.

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F. Asgari, S. Kalateh Jari, B. Motesharezadeh, M. Ghanbari Jahromi, and W. Weisany declare that they have no competing interests.

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The datasets generated and/or analyzed during the current study are available from the corresponding author on reasonable request.

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Asgari, F., Kalateh Jari, S., Motesharezadeh, B. et al. Application of Benzylaminopurine with Methyl Jasmonate and Epibrassinolide Improved Growth and Physio-biochemical Attributes of Strawberry (Fragaria × ananassa cv. ‘Albion’). Applied Fruit Science 66, 453–463 (2024). https://doi.org/10.1007/s10341-023-00996-4

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