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<p>Climate change poses a significant threat to grapevine survival and productivity worldwide. Mutation breeding is an effective technique for inducing genetic diversity in grapevines, enabling the modulation of phytochemical and biochemical activities as well as genes associated with morphological traits. This study evaluated the effects of Cobalt-60 gamma irradiation on four grapevine cultivars (maintained at Horticulture Research Institute, Khuzdar, Pakistan) to identify the optimal dose for beneficial changes. Hardwood cuttings were exposed to five radiation levels in a randomized complete block design, followed by assessments of morphological, phytochemical and biochemical traits. 10&#xa0;Gy irradiation accelerated sprouting, increase plant height, leaf size, and node number and enhanced phenolic, flavonoid, and antioxidant activities across cultivars. In contrast, higher doses delayed development and reduced growth and biochemical performance. Cluster and principal component analyses confirmed the dose dependent responses. Overall, 10&#xa0;Gy was identified as the optimal dose for promoting growth and metabolic resilience in grapevines. This study provides the first systematic evidence from Pakistan on radiation-induced mutagenesis in grapevines, filling a major knowledge gap and demonstrating the potential of mutation breeding as a rapid and effective strategy for developing climate-resilient cultivars to support sustainable viticulture and regional food security.</p>

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Gamma radiation-induced mutation breeding for enhanced yield and stress tolerance in grapevine (Vitis vinifera L.)

  • 期刊论文

  • 出版模式：

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  • 发表日期：

    2025年11月19日

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  • Naeem Ud-Din,
  • Syed Riaz Ahmed,
  • Saima Jameel,
  • Atif Bilal Asad,
  • Zafran Khan,
  • Nimra Gul,
  • Anisa Umer,
  • Shajia Ali,
  • Mohammad Aslam,
  • Ahmed Aziz Kurd

摘要

Climate change poses a significant threat to grapevine survival and productivity worldwide. Mutation breeding is an effective technique for inducing genetic diversity in grapevines, enabling the modulation of phytochemical and biochemical activities as well as genes associated with morphological traits. This study evaluated the effects of Cobalt-60 gamma irradiation on four grapevine cultivars (maintained at Horticulture Research Institute, Khuzdar, Pakistan) to identify the optimal dose for beneficial changes. Hardwood cuttings were exposed to five radiation levels in a randomized complete block design, followed by assessments of morphological, phytochemical and biochemical traits. 10 Gy irradiation accelerated sprouting, increase plant height, leaf size, and node number and enhanced phenolic, flavonoid, and antioxidant activities across cultivars. In contrast, higher doses delayed development and reduced growth and biochemical performance. Cluster and principal component analyses confirmed the dose dependent responses. Overall, 10 Gy was identified as the optimal dose for promoting growth and metabolic resilience in grapevines. This study provides the first systematic evidence from Pakistan on radiation-induced mutagenesis in grapevines, filling a major knowledge gap and demonstrating the potential of mutation breeding as a rapid and effective strategy for developing climate-resilient cultivars to support sustainable viticulture and regional food security.