4.7 Article

Effects of Plant Growth Regulators on Plum (Prunus domestica L.) Grown on Two Rootstocks at Harvest and at the Postharvest Period

期刊

HORTICULTURAE
卷 8, 期 7, 页码 -

出版社

MDPI
DOI: 10.3390/horticulturae8070621

关键词

European plum; rootstocks; 6-benzyladenine; GA(3); cold storage; shelf-life

资金

  1. Ministry of Education, Science and Technological Development of the Republic of Serbia [451-03-68/2022-14/200222]
  2. project The use of plant growth regulators and biostimulants for the improvement of fruit quality and storage ability from 2016-2019 by the Provincial Secretariat for Higher Education and Scientific Research, Autonomous Province of Vojvodina, Republic of

向作者/读者索取更多资源

This study explored the effects of plant growth regulators, including cytokinins and gibberellins, on plum fruit quality and storability. Results showed that preharvest treatment with gibberellin A3 could enhance fruit morphology, increase nutrient content, and improve postharvest preservation, suggesting its application in contemporary European plum production for improved fruit quality, storage potential, and nutritional value across different rootstocks.
Plant growth regulators (PGRs), such as cytokinins (6-benzyladenine; BA) and gibberellins (GAs), are widely used in fruit production. This study focused on the plum cultivar Cacanska rodna (P. domestica L.) grafted on vegetative rootstock WaVit and generative rootstock Prunus cerasifera, with interstock Prunus spinosa. PGR treatments included 50 mg L-1 and 100 mg L-1 of BA and 200 mg L-1 of gibberellin A3 (GA(3)) and non-treated control. Pomological characteristics of plum fruits were examined at harvest, while physicochemical properties were analyzed at harvest and after 28 days of cold storage and 4 days of shelf life. GA(3) and BA application changed the fruit morphological traits, improved skin strength, and increased carotenoid, anthocyanin and sucrose content while decreasing the titratable acidity at harvest. The beneficial effects of higher sucrose, anthocyanin and carotenoid levels persisted in all PGR-treated fruits after cold storage and shelf life. GA(3)-treated fruits had firmer flesh, stronger skin and higher total soluble solids (TSS) content, while in BA-treated plums, these effects were rootstock-dependent. The physical properties and chemical composition of plum fruit in the postharvest period suggest beneficial effects of the applied PGR treatments. Moreover, these chemical treatments might have prolonged the beneficial impact on fruit storability, nutritional profile and sensory properties. Based on our results, GA(3) preharvest treatment can be included in standard cultivation practices within contemporary production systems of European plums not only to improve fruit quality at harvest but also to improve the storage potential and nutritional value, regardless of the rootstock used.

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