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<p>Potato production in Eastern Europe is significantly constrained by fungal pathogens that reduce tuber yield and quality. Among the most important diseases are potato wart caused by <i>Synchytrium endobioticum</i>, dry rot caused by <i>Boeremia exigua</i>, and early blight caused by <i>Alternaria solani</i> and <i>Alternaria alternata</i>. The aim of this study was to evaluate the resistance of Ukrainian potato varieties to these pathogens under laboratory and controlled environmental conditions during 2022–2024. Eighteen potato varieties of Ukrainian origin were assessed using artificial inoculation assays and standardized disease evaluation protocols. Resistance to potato wart was evaluated according to EPPO Standard PM 3/88(1), while resistance to dry rot and early blight was determined using disease severity scoring scales. Fourteen potato varieties exhibited high resistance to potato wart, whereas several genotypes demonstrated stable resistance to dry rot and early blight. The varieties 'Azhur', 'Fanatka', 'Fotyniia', 'Marfusha', 'Medeia', 'Myroslava', 'Rodynna', 'Rostavytsia', 'Soborna', 'Svitana' and 'Yavir' showed combined resistance to two or more pathogens. In particular, 'Medeia', 'Myroslava', 'Svitana', 'Fanatka' and 'Fotyniia' demonstrated stable resistance to all three diseases studied. The identified resistant varieties represent valuable genetic resources for potato breeding programmes and integrated disease management strategies aimed at reducing yield losses and dependence on chemical plant protection products in regions affected by multiple potato pathogens.</p>

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Resistance of Ukrainian potato varieties to Synchytrium endobioticum, Boeremia exigua and Alternaria spp. under laboratory and field conditions

  • 期刊论文

  • 发表日期：

    2026年5月26日

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  • Avrelia Zelya,
  • Rita Asakaviciute,
  • Alona Gavryliuk,
  • George Zelya,
  • Tatjana Andriychuk

摘要

Potato production in Eastern Europe is significantly constrained by fungal pathogens that reduce tuber yield and quality. Among the most important diseases are potato wart caused by Synchytrium endobioticum, dry rot caused by Boeremia exigua, and early blight caused by Alternaria solani and Alternaria alternata. The aim of this study was to evaluate the resistance of Ukrainian potato varieties to these pathogens under laboratory and controlled environmental conditions during 2022–2024. Eighteen potato varieties of Ukrainian origin were assessed using artificial inoculation assays and standardized disease evaluation protocols. Resistance to potato wart was evaluated according to EPPO Standard PM 3/88(1), while resistance to dry rot and early blight was determined using disease severity scoring scales. Fourteen potato varieties exhibited high resistance to potato wart, whereas several genotypes demonstrated stable resistance to dry rot and early blight. The varieties 'Azhur', 'Fanatka', 'Fotyniia', 'Marfusha', 'Medeia', 'Myroslava', 'Rodynna', 'Rostavytsia', 'Soborna', 'Svitana' and 'Yavir' showed combined resistance to two or more pathogens. In particular, 'Medeia', 'Myroslava', 'Svitana', 'Fanatka' and 'Fotyniia' demonstrated stable resistance to all three diseases studied. The identified resistant varieties represent valuable genetic resources for potato breeding programmes and integrated disease management strategies aimed at reducing yield losses and dependence on chemical plant protection products in regions affected by multiple potato pathogens.