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

A. Zelya¹, R. Asakaviciute²*, T. Andriychuk¹, H. Zelya¹, A. Skoreyko¹, A. Kuvshynov¹ and A. Razukas²

¹Ukrainian Science-Research Plant Quarantine Station Institute of Plant Protection National Academy of Agrarian Science, UA60321v. Boyani, Novoselitsa district, Chernivtsi region, Ukraine
²Lithuanian Research Centre for Agriculture and Forestry, Voke Branch of Institute of Agriculture, Zalioji a. 2, LT-02232 Vilnius, Lihuania
*Correspondence: rita.asakaviciute@lammc.lt

Abstract:

The 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.

Key words:

choice, donor, late blight, resistance, Solanum tuberosum L., wart

Monitoring of early attacks of late blight in Lithuania

Alma Valskytė¹, Kęstutis Tamošiūnas², Janina Gošovskienė³ and Gintautas Cesevičius⁴

¹Lithuanian Institute of Agriculture Voke branch, Žalioji a.2, 4002 Vilnius, Lithuania; e-mail: alma.valskyte@voke.lzi.lt
²Lithuanian Institute of Agriculture, Instituto al. 1, Akademija, Kėdainių r., l, Lithuania; e-mail: lziaa@lzi.lt
³State Plant Protection Service, Pelesos 85, Vilnius, Lithuania; e-mail: vaatgo@vaat.lt
⁴Lithuanian Agricultural Advisory Service, Stoties 5, Akademija, 5051 Kėdainių r., Lithuania; e-mail: aug3@lzukt.lt

Abstract:

Late blight monitoring means continual observations of late blight development during potato vegetation period. The aim of potato late blight monitoring is to establish the first appearance of late blight symptoms and to observe the development of potato late blight in different regions of Lithuania. The Lithuanian Institute of Agriculture (LIA), the Lithuanian Agricultural Advisory Service (LAAS) and the State Plant Protection Service (SPPS) implement monitoring of late blight in Lithuania and have been taking part in the program of late blight monitoring in the Nordic and Baltic countries since 1999 (http://www.web-blight.net).

In 2001 potato late blight monitoring was carried out in 20 districts of Lithuania. Observations were made in 53 fields and 23 potato varieties of different maturity and susceptibility. First symptoms of late blight in Lithuania in 2001 were established on 15 June in Varėna district. During the season, the development of late blight had an epiphytotic character.

Key words: