Evaluation of the Resistance of Some Varieties and Lines of Triticale (Triticosecale wittmack) to the Attack
of the Pathogene Puccinia striiformis in the Climatic Conditions of 2023 - ARDS Pitești-Albota

Maria-Magdalena Podea, Cristina Ghiorghe, Mariana-Cristina Nicolae, Marian Robert Gheorghe,
Cătălin Dinuță, Diana Popescu, Oana-Daniela Badea

Agricultural Research and Development Station Pitești

Keywords: Puccinia striiformis, triticale, lines, yellow-striped rust, varieties.

Abstract: Initially, the Tricosecale species was thought to serve as a bridge between the transfers of resistance genes to various pathogens and pests, mainly from rye to wheat. Although its better resistance to pathogens compared to wheat and rye has become questionable over time, it still looks like a healthy crop. In the Southern Subcarpathians, triticales are susceptible to the attack of the pathogen Puccinia striiformis (striped yellow rust), a disease that occurs under certain temperature and humidity conditions, conditions met in 2023.
In this study, the disease was monitored under conditions of natural infection in 18 varieties and 7 lines, and the resistance of the plants to P. striiformis was evaluated. The biological material used was: Plai, Titan, Stil, Haiduc, Negoiu, Oda FD, Pisc, Tulnic, Cascador, Utrifun, Vifor, Vultur, Zori, Zvelt, Zaraza, FDL Ascendent, FDL Cordial, T F2, 14225 T1-02, 16026 T4-1, 14187 T1, 16322 T1, 16007T1-1, 15038 T1-1, 15183 T1-2.
The intensity of the attack ranged from 22% (Zaraza) to 86% (Cascador); attack frequency varied between 15% (Zaraza) and 97% (Tulnic); and the attack degree (A.D.) ranged from 3.3% (Zaraza) to 81.7% (Cascador). These results highlight substantial variability in the resistance of the tested genotypes under the climatic conditions of 2023.