Responses of Ethylene Emission, Abscission, and Fruit Quality to the Application of ACC as a Chemical Thinner in ‘Flatbeauti’ Peach
Visualitza/Obre
Data de publicació
2024-06-15ISSN
0721-7595
Resum
Peach (Prunus persica (L.) Batsch) trees are prone to heavy cropping, but crop load management options are limited. 1-aminocyclopropane-1-carboxylic acid (ACC) has been suggested to reduce crop load and improve fruit quality in peaches, but many questions remain concerning the role of endogenous ethylene in the abscission response and other side effects. Here, the use of ACC as a chemical thinner in peach trees was studied at different rates (350, 500, and 750 mg L−1) and timings [at full bloom (FB) and after petal fall (AP) when the fruit was approximately 15–20 mm in diameter] by comparing the results to those of an untreated control and a hand-thinning treatment as a reference. The abscission response and ethylene emission were related to the ACC concentration. ACC-induced ethylene production, as well as some degree of defoliation, was time-dependent, with the highest ethylene emission peaks and the lowest defoliation degree occurring when ACC was applied at FB. On the other hand, the intra-annual differences in the abscission response between the FBs and APs varied depending on the season. AP-treated fruits produced more endogenous ethylene than did untreated fruits up to harvest, which could have influenced fruit color. Finally, our results indicate that ACC in the range of 500 and 350 mg L−1 can be used in ‘Flatbeauti’ peaches at FB and AP, respectively, to induce adequate levels of fruit crop load without or with minor undesired effects.
Tipus de document
Article
Versió del document
Versió publicada
Llengua
English
Matèries (CDU)
633 - Cultius i produccions
Pàgines
14
Publicat per
Springer
Publicat a
Journal of Plant Growth Regulation
Citació
Torres, Estanis, David Caimel, and Luís Asín. 2024. “Responses of Ethylene Emission, Abscission, and Fruit Quality to the Application of ACC as a Chemical Thinner in ‘Flatbeauti’ Peach.” Journal of Plant Growth Regulation, June. https://doi.org/10.1007/s00344-024-11382-z.
Programa
Fructicultura
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