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<p>Studies were conducted to investigate the responses of gamma-irradiated dragon fruit to water stress. Six-month-old seedlings, raised from γ-irradiated seeds (100, 200, 300, 400 and 500&#xa0;Gy) were assessed under mild, moderate and severe water stress conditions. Low irradiation level (≤ 200&#xa0;Gy) enhanced plant growth, relative water content, membrane stability index, chlorophyll stability index, proline and the activities of superoxide dismutase, ascorbate peroxidase and catalase activity under water stress condition. However, high irradiation level (&gt; 200&#xa0;Gy) significantly affected plant growth and physiological parameters of dragon fruit. Among various variables, proline content and antioxidative enzyme activity are key predictors for biomass production in dragon fruit under water stress. The findings provide valuable insights into the efficient utilization of radiation breeding in expediting the development of water stress-tolerant mutant lines of dragon fruit.</p>

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Evaluation of gamma irradiation effect on morpho-physiological and biochemical traits of dragon fruit (Selenecereus monacanthus) under water stress environment

  • 期刊论文

  • 发表日期：

    2025年9月13日

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  • Kuldeep K. Shukla,
  • Kundan Kishore,
  • K. Pradhan,
  • Subash C. Swain,
  • Manas R. Sahoo,
  • Rajkumari Bhol,
  • S. Samal,
  • Ankita Sahu,
  • Ashok Mishra

摘要

Studies were conducted to investigate the responses of gamma-irradiated dragon fruit to water stress. Six-month-old seedlings, raised from γ-irradiated seeds (100, 200, 300, 400 and 500 Gy) were assessed under mild, moderate and severe water stress conditions. Low irradiation level (≤ 200 Gy) enhanced plant growth, relative water content, membrane stability index, chlorophyll stability index, proline and the activities of superoxide dismutase, ascorbate peroxidase and catalase activity under water stress condition. However, high irradiation level (> 200 Gy) significantly affected plant growth and physiological parameters of dragon fruit. Among various variables, proline content and antioxidative enzyme activity are key predictors for biomass production in dragon fruit under water stress. The findings provide valuable insights into the efficient utilization of radiation breeding in expediting the development of water stress-tolerant mutant lines of dragon fruit.