Impact of Partial Root Drying Irrigation (PRD) on Quality Attributes of Pistachio (Pistacia vera L.) Nuts

IF 1.2 4区农林科学 Q3 HORTICULTURE Erwerbs-Obstbau Pub Date : 2024-09-04 DOI:10.1007/s10341-024-01190-w

Walid Abidi, Rawaa Akrimi

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Abstract

Pistachio trees show a clear response to low amounts of water supply. This experiment aims to follow the impact of partial root drying (PRD) on the phenolic compounds and fatty acids profile of the pistachio cultivars ‘Mateur’, ‘Elguetar’, ‘Kerman’ and ‘Ohadi’ grown in semi-arid conditions during the growing seasons of 2021 and 2022. The experiment orchard was located in the Regional Center of Agricultural Research of Sidi Bouzid (CRRA), Tunisia. Pistachio trees were subjected to three irrigation treatments from March to September, corresponding to T0: control irrigated at 100% crop evapotranspiration (ETc), T1: 75% ETc and T2: 50% ETc on a 15-day alternating cycle on one side of the root system. Results showed that reducing irrigation by 25% (75% ETc) compared to the control (100% ETc) increased water productivity mainly for the cv. ‘Mateur’ without significant reductions on yield, whereas the 50% ETc water regime clearly reduced the yield components. The two water regimes 75% ETc (T1) and 50% ETc (T2) enhanced the bioactive compounds content as compared to the control treatment (T0). Based on agronomic and nut quality parameters, it can be concluded that the PRD irrigation strategy is a very promising irrigation technique in pistachio trees to reduce water loss.

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部分根系干燥灌溉（PRD）对开心果（Pistacia vera L.）质量属性的影响

阿月浑子树对低量供水有明显的反应。本实验旨在研究部分根系干燥（PRD）对 2021 年和 2022 年生长季节生长在半干旱条件下的开心果品种 "Mateur"、"Elguetar"、"Kerman "和 "Ohadi "的酚类化合物和脂肪酸含量的影响。实验果园位于突尼斯西迪布济德地区农业研究中心（CRRA）。从 3 月到 9 月，对开心果树进行了三种灌溉处理，分别为 T0：对照灌溉，作物蒸散量（ETc）为 100%；T1：ETc 为 75%；T2：ETc 为 50%，根系一侧以 15 天为一个交替周期。结果表明，与对照（100% ETc）相比，减少 25% 的灌溉（75% ETc）主要提高了'Mateur'品种的水分生产率，但产量并没有显著降低，而 50% ETc 的水制度则明显降低了产量成分。与对照处理（T0）相比，75% ETc（T1）和 50%ETc（T2）两种水分制度提高了生物活性化合物的含量。根据农艺学和坚果质量参数，可以得出结论：PRD 灌溉策略是一种非常有前途的开心果灌溉技术，可以减少水分流失。

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来源期刊

Erwerbs-Obstbau 农林科学-园艺

CiteScore

1.70

自引率

15.40%

发文量

152

审稿时长

>12 weeks

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