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<p>Potato (<i>Solanum tuberosum</i> L.) is the third major agricultural crop. It is one of the key staple food crops after wheat and rice. Osmatic stress and ionic toxicity are the major abiotic stress factors that reduce the potato crop yield significantly. Sustainable methods are required to mitigate these stress. This study was designed to determine the effect of <i>Ascophyllum nodosum</i> extract on two commercially important potato cultivars i.e., Kuroda and Lady Rosetta grown under NaCl stress. Potato tubers of uniform sizes were planted in pots, filled with garden soil. Plants were treated with various concentrations (0, 25, 50 and 75 mM) of NaCl after 30 days. Seaweed extract (SWE) (0.5, 1.0 and 1.5%) was applied alone or in combinations at regular intervals of 10 days. The data of different morphological, physiological and biochemical parameters were collected after harvesting. The results exhibit that NaCl reduced the growth and yield parameters at 75 mM, shoot length was decreased to 23 cm in Kuroda and 29 cm in Lady Rosetta compared with 33&#xa0;and 32&#xa0;cm in control plants, respectively. Tuber number declined to low as 3 tubers per plant. Application of SWE markedly improved growth under saline condition, like shoot length increased up to 45% in Kuroda 34% in Lady Rosetta at 75mM with 1% and 1.5% SWE. During this investigation, increased in antioxidant enzyme activities (Peroxidase (POD) &amp; superoxide dismutase (SOD)) were recorded as compared to non-treated plants. Proline accumulation induced by salinity was reduced by 57% in Kuroda and 33% in Lady Rosetta with 1.5% SWE at 75 mM NaCl, indicating reduced stress injury, soluble sugar contents and protein contents were also increased with the application of seaweed extract. Overall, <i>Ascophyllum nodosum</i> extract effectively mitigated salinity induced growth inhibition in both potato cultivars by improving physiological performance and activating biochemical defense mechanisms, suggesting its potential as an eco-friendly biostimulant to enhance potato productivity under saline conditions.</p>

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Integrating Ascophyllum nodosum extract for salt stress management and tuberization improvement in potato (Solanum tuberosum L.)

  • 期刊论文

  • 出版模式：

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  • 发表日期：

    2026年5月4日

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  • Muhammad Umair,
  • Kinza Nazir,
  • Maryam Zubair,
  • Muhammad Usman Aslam,
  • Zahoor Ahmad Sajid

摘要

Potato (Solanum tuberosum L.) is the third major agricultural crop. It is one of the key staple food crops after wheat and rice. Osmatic stress and ionic toxicity are the major abiotic stress factors that reduce the potato crop yield significantly. Sustainable methods are required to mitigate these stress. This study was designed to determine the effect of Ascophyllum nodosum extract on two commercially important potato cultivars i.e., Kuroda and Lady Rosetta grown under NaCl stress. Potato tubers of uniform sizes were planted in pots, filled with garden soil. Plants were treated with various concentrations (0, 25, 50 and 75 mM) of NaCl after 30 days. Seaweed extract (SWE) (0.5, 1.0 and 1.5%) was applied alone or in combinations at regular intervals of 10 days. The data of different morphological, physiological and biochemical parameters were collected after harvesting. The results exhibit that NaCl reduced the growth and yield parameters at 75 mM, shoot length was decreased to 23 cm in Kuroda and 29 cm in Lady Rosetta compared with 33 and 32 cm in control plants, respectively. Tuber number declined to low as 3 tubers per plant. Application of SWE markedly improved growth under saline condition, like shoot length increased up to 45% in Kuroda 34% in Lady Rosetta at 75mM with 1% and 1.5% SWE. During this investigation, increased in antioxidant enzyme activities (Peroxidase (POD) & superoxide dismutase (SOD)) were recorded as compared to non-treated plants. Proline accumulation induced by salinity was reduced by 57% in Kuroda and 33% in Lady Rosetta with 1.5% SWE at 75 mM NaCl, indicating reduced stress injury, soluble sugar contents and protein contents were also increased with the application of seaweed extract. Overall, Ascophyllum nodosum extract effectively mitigated salinity induced growth inhibition in both potato cultivars by improving physiological performance and activating biochemical defense mechanisms, suggesting its potential as an eco-friendly biostimulant to enhance potato productivity under saline conditions.