Quantitative variation of phenolic compounds in different tissues of pistachio(Pistacia vera L. cv. Uzun) associated with alternate bearing

Authors

MÜJGAN GÜNEYFollow
MUHAMMET ALİ GÜNDEŞLİFollow
MURAT GÜNEYFollow
NESİBE EBRU KAFKASFollow
SALİH KAFKASFollow
ZEYNEP ERGÜNFollow

Author ORCID Identifier

MÜJGAN GÜNEY: 0000-0001-5491-1430

MUHAMMET ALİ GÜNDEŞLİ: 0000-0002-7068-8248

MURAT GÜNEY: 0000-0003-2882-8347

NESİBE EBRU KAFKAS: 0000-0003-3412-5971

SALİH KAFKAS: 0000-0002-9037-4764

ZEYNEP ERGÜN: 0000-0002-9868-9488

DOI

10.55730/1300-011X.3200

Abstract

Alternate bearing is a common challenge in horticultural plants, leading to irregular yield in successive years. The potentialrole of phenolic compounds in regulating this phenomenon, however, is not well understood. This study aimed to investigate thepotential role of phenolic compounds in alternate bearing in pistachio trees by analysing samples from different parts of the “Uzun”cultivar over two consecutive years. Seven phenolic compounds (gallic acid, p-coumaric acid, caffeic acid, ferulic acid, chlorogenic acid,catechin, and quercetin) were analysed using high-performance liquid chromatography at 10-day intervals. Significant variations wereobserved in the levels of certain phenolic compounds between “ON” and “OFF” years, suggesting a potential role for these compoundsin alternate bearing. Ferulic acid exhibited a significant decrease in leaves and shoots, indicating its translocation to the nuts, leadingto a sharp decline during the nut lignification process. A negative and significant correlation between ferulic and caffeic acid levels wasobserved in the “ON” and “OFF” years, which may be linked to the alternate bearing and kernel development process in pistachio.These findings provide valuable insights into the role of phenolic compounds in regulating alternate bearing in pistachio trees and couldinform future strategies for enhancing pistachio yields and quality.

Keywords

alternate bearing, phenolic compounds, Pistacia vera L., principal component analysis (PCA)

First Page

539

Last Page

556

Creative Commons License

This work is licensed under a Creative Commons Attribution 4.0 International License.

Recommended Citation

GÜNEY, MÜJGAN; GÜNDEŞLİ, MUHAMMET ALİ; GÜNEY, MURAT; KAFKAS, NESİBE EBRU; KAFKAS, SALİH; and ERGÜN, ZEYNEP (2024) "Quantitative variation of phenolic compounds in different tissues of pistachio(Pistacia vera L. cv. Uzun) associated with alternate bearing," Turkish Journal of Agriculture and Forestry: Vol. 48: No. 4, Article 6. https://doi.org/10.55730/1300-011X.3200
Available at: https://journals.tubitak.gov.tr/agriculture/vol48/iss4/6