Yellow rust (caused by Puccinia striiformis) racial distribution in Latvia and possibilities of control its devastation Project leader Līga Zemeca Team of project Maksims Fiļipovičs Viktorija Zagorska Inta Jakobija Duration 2019 - 2021 Research focus 1. Implementation of the "One Health" concept and species interaction studies in the context of climate change Source of funding Ministry of Agriculture projects Project partners Institute of Agricultural Resources and Economics (AREI) Description of project The aim of research To study causal agent of yellow rust P. striiformis in-depth and to identify pathogens in oats. The tasks of project: To study interaction of aggressive races of P.striiformis, the causal agent of yellow rust and wheat varieties grown in LatviaTo identify Puccinia spp from barbel Berberis spp plant part samplesTo identify pathogens occurring on oats Results Two of Puccinia isolates identified by phenotyping method corresponded to Warrior-, one isolate to Warrior race. Two isolates were not identified, the infected differentials showed different characteristics than the previously known races of P. striiformis. Winter wheat varieties grown in Latvia in the juvenile development period are susceptible to P. striiformis races Warrior and Warrior-, partially susceptible to Triticale 2015. 107 isolates of Puccinia isolated from barberry, mahogany and wheat were analyzed with molecular methods, P. striiformis was not identified. In the territory of Latvia, barberry Berberis spp. are intermediate hosts of the stem rust P. graminis. 249 isolates of Fusarium sp. were obtained from oat sprouts. After analysis of morphological features, 13 different Fusarium species were identified, mostly F. graminearum and F. oxysporum, which are toxin-producing species. Possibilities for the biological control of yellow rust (Puccinia striiformis f.sp. tritici) in winter wheat in Latvia in 2017-2018 // Agronomy Research Vol. 17 (3), 716-724, 2019 https://doi.org/10.15159/AR.19.137 informative materials for farmers
