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<p>Crop tolerance to salinity influences brackish water management in agriculture, and tolerance to salinity increases with the application of salt stress tolerance elicitors. We aimed to investigate the effects of applying ascorbic (ASC), gibberellic (GA<sub>3</sub>), and salicylic (SA) acids on the production and morphophysiological responses of arugula (<i>Eruca sativa</i> Mill.) cultivars to salt stress. A greenhouse study was conducted over one crop cycle using a 3&#xa0;×&#xa0;5 randomized block design. We investigated three arugula cultivars (Cultivada, Gigante and Rokita) and five combinations of treatments: control (0.54&#xa0;dS&#xa0;m<sup>−1</sup>); salt stress (4.0&#xa0;dS&#xa0;m<sup>−1</sup>); salt stress + ASC (50 µM L<sup>−1</sup>); salt stress + GA<sub>3</sub> (50 µM L<sup>−1</sup>); and salt stress + SA (50 µM L<sup>−1</sup>). Plants were evaluated for growth, production, leaf gas exchange, chlorophyll a fluorescence, and ionic homeostasis. Cultivada arugula is sensitive to salt stress, while Gigante and Rokita are tolerant. Under salt stress, the use of GA<sub>3</sub> in Cultivada increases production by 37.29% compared to salt stress and by 71.22% and 49.87% compared to ASC and SA, respectively. Rokita had a higher assimilation rate of CO<sub>2</sub> (<i>A</i><sub>N</sub>) in the control than other cultivars. However, under salt stress and GA<sub>3</sub>, Cultivada obtained a higher <i>A</i><sub>N</sub> of 4.28% and 12.12% than Gigante and Rokita, respectively. Using GA<sub>3</sub> to grow arugula can be a viable alternative to using surface water sources or shallow wells with higher salinity.</p>

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Production, Growth, Photosynthetic Response, and Ionic Responses of Arugula Cultivars Under Salt Stress Elicitors

  • 期刊论文

  • 发表日期：

    2025年7月30日

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  • Jussiara Sonally Jácome Cavalcante,
  • Miguel Ferreira Neto,
  • Tayd Dayvison Custódio Peixoto,
  • Kleane Targino Oliveira Pereira,
  • Bianca Fernandes Umbelino,
  • Ricardo André Rodrigues Filho,
  • Rômulo Carantino Lucena Moreira,
  • Pedro Dantas Fernandes,
  • Nildo da Silva Dias,
  • João Everthon da Silva Ribeiro,
  • Antônio Gustavo de Luna Souto,
  • Francisco Vanies da Silva Sá

摘要

Crop tolerance to salinity influences brackish water management in agriculture, and tolerance to salinity increases with the application of salt stress tolerance elicitors. We aimed to investigate the effects of applying ascorbic (ASC), gibberellic (GA3), and salicylic (SA) acids on the production and morphophysiological responses of arugula (Eruca sativa Mill.) cultivars to salt stress. A greenhouse study was conducted over one crop cycle using a 3 × 5 randomized block design. We investigated three arugula cultivars (Cultivada, Gigante and Rokita) and five combinations of treatments: control (0.54 dS m−1); salt stress (4.0 dS m−1); salt stress + ASC (50 µM L−1); salt stress + GA3 (50 µM L−1); and salt stress + SA (50 µM L−1). Plants were evaluated for growth, production, leaf gas exchange, chlorophyll a fluorescence, and ionic homeostasis. Cultivada arugula is sensitive to salt stress, while Gigante and Rokita are tolerant. Under salt stress, the use of GA3 in Cultivada increases production by 37.29% compared to salt stress and by 71.22% and 49.87% compared to ASC and SA, respectively. Rokita had a higher assimilation rate of CO2 (AN) in the control than other cultivars. However, under salt stress and GA3, Cultivada obtained a higher AN of 4.28% and 12.12% than Gigante and Rokita, respectively. Using GA3 to grow arugula can be a viable alternative to using surface water sources or shallow wells with higher salinity.