Növénytermelés / Volume 68 / Issue 2 (June 2019) / pp. 25-40

MIKÓ PÉTER – KOVÁCS GERGŐ PÉTER – PERCZE ATTILA – CSENDES CSABA – SÁRVÁRI ISTVÁN

Examining multi-resistant potato varieties between 2014–2016

An experiment was set up in Gödöllő between 2014-2016 to examine whether four multi-resistant potato varieties (Sárvári Borostyán, Sárvári Piroska, Sárvári Rózsa and Sárvári Rubinka) keep up with the elite sowing tuber of a standard variety (Desiree) following re-planting for 11, 20, and 21–21 years, respectively. It was also an objective to observe any yield decrease due to potential genetic degradation by continuing the production of the given variety for two more years.

It was a further aim of this extensive, crop protection-free and slightly irrigated experiment to examine the yield potential of each variety at low cost. The production area had especially unfavourable endowments; therefore, it was perfect for the experiment. Drought and heat stress were observed for several periods during the examined crop years and it was concluded that multi-resistant potato varieties produce proper yields even under extensive conditions and their yields are significantly higher from the second year of experiment (26.8–30.0 t ha1 in 2015 and 26.3–28.9 t ha1 in 2016) than the control variety Desireé (18.8 t ha1 in 2015 and 22.0 t ha1 in 2016). The defoliation of multi-resistant potato varieties following flowering had a significantly lower percentage on all occasions of examination than the control variety.

Keywords: multi-resistant potato, Sárvári potato varieties, potato production experiment

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János Nagy

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