Potato varieties resistance study to wart Synchytrium endobioticum (Schilbersky) Percival and late blight Phytophthora infenstans (Mont) de Bary

Received: June 6th, 2022 ; Accepted: December 15th, 2022 ; Published: December 16th, 2022 ; Correspondence: [email protected] results of research on the selection of potato varieties and breeding material from Institute for potato study NAAS and Institute of Agriculture of Carpathian Region NAAS are presented in this paper. There were selected 12 potato varieties of Ukrainian breeding with high resistance level: ‘Aria’, ‘Glazurna’, ‘Knyagynya’, ‘Zheran’, ‘Zhytnytsia’, ‘Podolyanka’, ‘Skarbnytsia’, ‘Slavyanka’, ‘Chervona Ruta’, ‘Fantasy’, ‘Schedryk’ and ‘Chortytsia’ (1.2–2.4 points (R1) and 2 varieties (‘Dyvo’ and ‘Povin’ - 3.4 and 3.0 points (R2)) by the research results for potato assessment to wart in 2020–2021 by the results of field and laboratory studies for determining Ukrainian breeding potato varieties resistance to wart Synchytrium endobioticum (Schilb) Perc. There were chosen 6 varieties with relatively high resistance degree to late blight Phytophthora infenstans (Mont) de Bary (7.2–8.5 points): ‘Aria’, ‘Dyvo’, ‘Zhytnytsia’, ‘Knyagynia’, ‘Podolyanka’ and ‘Slavyanka’ by the choice. The evaluation results allow to put them into the State Register of plant varieties suitable for dissemination in Ukraine. These potato varieties recommend for implementation in potato disease sources and usage as a parent form for crossing as sources of potato resistance to wart and late blight

BREEDING ASPECTS OF POTATO IN LITHUANIA

Potato (Solanum tuberosum L.) breeding and seed production in Lithuania is performed at Voke Branch of Lithuanian Institute of Agriculture. It was started in 1958. The main potato breeding object is to produce very early potato cultivars resistant to the nematodes and to the main potato diseases. As the result of breeding work eleven cultivars were produced: 'Meta', 'Vilnia', 'VB Aista', 'Nida', 'Mirta', 'Goda', 'VB Venta', 'Voke', 'VB Liepa', 'Vaiva' and 'VB Rasa'. The aim of the present work was to ascertain the resistance of Lithuanian potato varieties to the agent of potato blight Phytophthora infestans (Mont.) de Bary. The results have shown that potato varieties of different maturation time are unequally infected with potato blight. The disease spreading was more intense in early potato varieties, while in maincrop varieties the disease spreading was less intense. Other advantages - good yield, suitability for processing industry, excellent cookery qualities, good taste or attractive shape - were also the main items in producing of Lithuanian potato cultivars

Effects of organical and conventional growing on the content of biologically active compounds of potatoes

It was determined that amounts of chlorogenic acid, tyrosine, and tryptophan in potato tubers depend on meteorological conditions, farming type, individual properties of a variety, and interaction of these factors (P<0.05). It was noted in 2011 that organically grown potato tubers accumulated significantly higher amounts of chlorogenic acid, tyrosine, and tryptophan derivatives than conventionally grown tubers, while in 2012 the opposite was observed (P<0.01). Such results are due to the different meteorological conditions during the survey years