Efficacy of Biostimulants in Mitigating Drought Stress in Wheat ( Triticum durum L.) Over Two Growing Seasons

IF 2.8 2区农林科学 Q1 AGRONOMY

Journal of Agronomy and Crop Science Pub Date : 2026-04-17 DOI:10.1111/jac.70188

Chayma Ikan, Salma Toubali, Redouane Ouhaddou, Lahoucine Ech‐chatir, Boujemaa Fassih, Abderrahim Boutasknit, Abdelaziz Nilahyane, Abdelilah Meddich

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Abstract

This study aimed to compare the impact of biostimulants on wheat ( Triticum durum L.) in two consecutive field experiments conducted in 2023 and 2024. The experiments tested the effects of Bacillus sp., Bacillus subtilis (R), arbuscular mycorrhizal fungi (M), and compost (C) under two irrigation regimes: 100% crop evapotranspiration (ETc) for well‐watered conditions and 30% ETc for drought stress. Furthermore, the research focused on the combined and individual impacts of these biostimulants on wheat growth, yield and soil properties. The obtained results showed that drought stress caused significant declines in biomass, physiological traits and biochemical markers in both years. Furthermore, the application of biostimulants, especially C + M and M + R combinations, resulted in significant improvements. In 2023, shoot and root dry weights under drought stress increased by 137% and 72%, respectively, compared with the control. The 2024 results confirmed similar trends, with grain and straw yields rising by 167% and 130%, respectively. Additionally, biostimulants/biofertilisers positively impacted soil quality highlighting their role in enhancing wheat's resilience to drought through improved soil–plant interactions. These results underline the long‐term benefits of integrating biostimulants/biofertilisers into wheat farming under water‐limited conditions.

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生物刺激素缓解小麦干旱胁迫的效果研究超过两个生长季节

本研究旨在通过2023年和2024年连续进行的两项田间试验，比较生物刺激素对小麦（Triticum durum L.）的影响。试验测试了芽孢杆菌sp.、枯草芽孢杆菌(R)、丛枝菌根真菌(M)和堆肥(C)在两种灌溉制度下的效果：在水分充足的条件下施用100%作物蒸散（ETc），在干旱胁迫下施用30%作物蒸散（ETc）。此外，研究重点是这些生物刺激素对小麦生长、产量和土壤性质的综合和单独影响。结果表明，干旱胁迫在两年内均导致玉米生物量、生理性状和生化指标显著下降。此外，生物刺激剂的应用，特别是C + M和M + R组合，导致显著改善。2023年，干旱胁迫下的地上部和根系干重分别比对照增加了137%和72%。2024年的结果证实了类似的趋势，谷物和秸秆产量分别增长了167%和130%。此外，生物刺激剂/生物肥料对土壤质量有积极影响，突出了它们通过改善土壤-植物相互作用提高小麦抗旱能力的作用。这些结果强调了在水资源有限的条件下，将生物刺激素/生物肥料纳入小麦种植的长期效益。

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来源期刊

Journal of Agronomy and Crop Science 农林科学-农艺学

CiteScore

8.20

自引率

5.70%

发文量

审稿时长

7.8 months

期刊介绍： The effects of stress on crop production of agricultural cultivated plants will grow to paramount importance in the 21st century, and the Journal of Agronomy and Crop Science aims to assist in understanding these challenges. In this context, stress refers to extreme conditions under which crops and forages grow. The journal publishes original papers and reviews on the general and special science of abiotic plant stress. Specific topics include: drought, including water-use efficiency, such as salinity, alkaline and acidic stress, extreme temperatures since heat, cold and chilling stress limit the cultivation of crops, flooding and oxidative stress, and means of restricting them. Special attention is on research which have the topic of narrowing the yield gap. The Journal will give preference to field research and studies on plant stress highlighting these subsections. Particular regard is given to application-oriented basic research and applied research. The application of the scientific principles of agricultural crop experimentation is an essential prerequisite for the publication. Studies based on field experiments must show that they have been repeated (at least three times) on the same organism or have been conducted on several different varieties.