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oai:recercat.cat:20.500.12327/20492025-10-22T11:14:58Zcom_2072_4428com_2072_4427col_2072_487898

2025-10-22T11:14:58Z urn:hdl:20.500.12327/2049 Physiological Study of Ethephon‑ and ACC‑Induced Fruitlet and Leaf Abscission in Peach Trees Under Diferent Conditions of Temperature Torres, Estanis Asín Jones, Luis Producció Vegetal Fructicultura The efect of temperature on the ability of 2-chloroethylphosphonic acid (ethephon, ETH) and the 1-aminocyclopropane carboxylic acid (ACC) to induce ethylene production in fruitlets and abscission of fruitlets and leaves when applied at postbloom (~15 mm fruit diameter) was studied using 5-year-old ‘Sweet Lady’/Rootpac-20 peach [Prunus persica (L.) Batsch] trees kept in pots in environment-controlled growth rooms. ETH at 150 mg L−1 and ACC at 500 mg L−1 efectively thinned peaches. Increasing the temperature from 10 to 20 °C pronounced the ETH-induced fruit and leaf abscission and the ACC-induced leaf abscission and decreased stomatal conductance in leaves. However, the ACC thinning efect was not afected by increasing temperature, as well as ETH- and ACC-induced ethylene production in fruitlets and in the quantum yield of PSII photochemistry. Changes in ethylene peak in fruitlets and stomatal conductance in leaves were related to the abscission response. 2025-10-22T11:14:58Z 2025-10-22T11:14:58Z 2022-12-16 info:eu-repo/semantics/article Torres, Estanis, and Luís Asín. 2022. "Physiological Study Of Ethephon- And ACC-Induced Fruitlet And Leaf Abscission In Peach Trees Under Different Conditions Of Temperature". Journal Of Plant Growth Regulation. doi:10.1007/s00344-022-10888-8 0721-7595 http://hdl.handle.net/20.500.12327/2049 https://doi.org/10.1007/s00344-022-10888-8 eng Journal of Plant Growth Regulation http://creativecommons.org/licenses/by-sa/4.0/ info:eu-repo/semantics/openAccess Attribution-ShareAlike 4.0 International Springer