Abstract
This research work monitored the spread and development of the particularly dangerous wheat disease pyrenophorosis (P. tritici-repentis) in 2024. During the research, varieties of spring soft and hard wheat from the northern regions of Kazakhstan (Akmola and Kostanay regions) were studied. According to the monitoring results, the prevalence and degree of wheat disease infestation in each region showed different results. As a result of research conducted in the Akmola region, it was established that most varieties of spring wheat are not resistant to pyrenophorosis (P. tritici-repentis). The prevalence of the pathogen ranged from 24% to 98%, and the development of the disease from 6.60% to 34.60%. As a result of the conducted research, it was established that the least infected with the pathogen on wheat crops in the Akmola region was the Extensive variety, the pathogen incidence rate was 6.90%, and the disease prevalence rate was 24%. In addition, during the study of the spread and development of pyrenophorosis in the Kostanay region, it was established that the pathogen P. tritici-repentis causes significant damage to wheat crop areas. Spring wheat varieties Aina, Avgustina, Karabalykskaya 7 and Aiym showed a high level of pathogen spread: 88%, 76%, 74% and 82%. The disease development index was 6.60%, 10.80%, 8.60% and 22.00%. The varieties Kazakhstanskaya rannespelaya, Khazret, Lamis, Kudesnitsa, which have shown high resistance (IT–R, 0%) to the pathogen P. tritici-repentis, are of great interest in the crop areas of the Kostanay region. According to the results of the study, all varieties of wheat sown in the Akmola region showed resistance to pyrenophorosis. In the Kostanay region, wheat varieties showed higher resistance to diseases than in the Akmola region. In the future, it is recommended to use all wheat varieties that are resistant to P. tritici-repentis in breeding programs.
01 Introduction
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02 References
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