Assessment of resistance against late bligth of potato on leaves of newly created and original selection material of potato

Abstract

Оцінка за стійкістю проти фітофторозу за листками новоствореного та вихідного селекційного матеріалу картоплі 24

Cultivar resistance of wart causative agents and late blight pathogen in potato breeding in Lithuania

“…Late blight was tested using the widely accepted laboratory and eld trials of arti cial infection by separate tubers and leaves of the Phytophthora infenstans (Mont) de Bary fungal inoculum, created by the Institute for Potato Study NAAS (Cherednychenko et al, 2021;EPPO Standard, 2017). The defeating degree was de ned using 9 points scale: 9 -very high resistance (symptoms of infected absent); 7 -relatively high resistance (infected tissue takes from 10% to 25 % surface and tubers cut); 5 -mid resistance (infected from 25% to 50%); 3 -low resistance (infected from 50% to 75%); 1 -very low resistance (infected more than 75%).…”

“…To obtain a higher yield and improve its quality, it is necessary to create new cultivars that are subject to certain requirements that are in line with the direction and purpose of selection (Visser et al 2009;Carputo et al 2013). Disease resistance is important because fungal, bacterial, and viral diseases cause serious damage to potato crops in elds, such as storage (Cherednychenko et al 2021). Varieties resistant to all disease complexes have not been created; therefore, depending on their growing climate region, selection of respective directions is carried out.…”