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Information × Registration Number 0226U000553, (0121U108740) , R & D reports Title Theoretically substantiate and develop scientific principles for creating the breeding material of potato varieties adapted to irrigation conditions and unfavorable hydrothermal factors by using biotechnological methods popup.stage_title Теоретично обґрунтувати та розробити наукові принципи створення вихідного насіннєвого матеріалу сортів картоплі, адаптованих до умов зрошення та несприятливих гідротермічних чинників з використанням біотехнологічних методів оздоровлення Head Yuziuk Serhii M., Кандидат сільськогосподарських наук Registration Date 12-01-2026 Organization Institute of climate smart agriculture of the national academy of agrarian sciences of Ukraine popup.description1 Develop scientific principles for creating the breeding material of potato varieties adapted to irrigation conditions and unfavorable hydrothermal factors by using biotechnological methods popup.description2 Research on optimization techniques for the process of creating initial potato seed material using biotechnological methods (2021–2025) revealed that the efficiency of producing healthy potato seed material is determined by the critical interaction of variety (maturity group) and planting date. Optimal timing and varieties were established for the in vitro culture. Early varieties: Kimmerya and Zhytnytsia formed the highest productivity and quality of microtubers during the summer-autumn planting dates (August–October). Best results: Kimmerya (August, profitability 51.9%), Zhytnytsia (June/September, profitability >133%). For mid-season varieties: Svitanok kyivskyi and Slovyanka, the maximum is achieved with late autumn and winter planting dates. Optimal for Svitanok kyivskyi (October, profitability 73.8%), and for Slovyanka (July/December, profitability >131%). The optimal storage period for microtubers is 255–260 days, which ensures maximum minituber yield in the field (up to 11.0 t/ha for the Kimmerya variety). The highest profitability for subsequent field reproduction is provided by spring planting in the PP-2 nursery, especially for mid-season varieties (Yavir – profitability up to 563.78%). Consistently high results are shown by the super-superelite nursery, optimal for mid-early varieties (Svitanok kyivskyi – profitability over 340%). To maximize the output of high-quality seed material, it is necessary to adhere to variety-specific optimal in vitro planting dates, store microtubers for about 260 days, and focus on spring planting in nurseries. Product Description popup.authors Anatolii V. Tomnytskyi Nadiia P. Kosenko Serhii O. Zaiets Hanna I. Bandysh Olha V. Dekhtiar popup.nrat_date 2026-01-12 Close