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Acta Prataculturae Sinica ›› 2024, Vol. 33 ›› Issue (2): 226-241.DOI: 10.11686/cyxb2023132

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Progress in research on fungal diseases of the genus Elymus

Long-hai XUE1(), Jia-qi LIU1,2, Chun-jie LI1,2()   

  1. 1.State Key Laboratory of Herbage Improvement and Grassland Agro-ecosystems,Center for Grassland Microbiome,Engineering Research Center of Grassland Industry,Ministry of Education,Gansu Tech Innovation Center of Western China Grassland Industry,College of Pastoral Agriculture Science and Technology,Key Laboratory of Grassland Livestock Industry Innovation,Ministry of Agriculture and Rural Affairs,Lanzhou University,Lanzhou 730020,China
    2.Grassland Research Center of National Forestry and Grassland Administration,Chinese Academy of Forestry,Beijing 100091,China
  • Received:2023-04-24 Revised:2023-05-23 Online:2024-02-20 Published:2023-12-12
  • Contact: Chun-jie LI

Abstract:

Elymus species are widely used as forage grasses on the Tibetan Plateau and widely grown in alpine pasture areas such as Gansu, Qinghai, Xinjiang, Tibet and Sichuan Province, China. Disease is one of the important factors limiting the production and utilization of the genus Elymus. In sown grassland, disease will directly affect the yield and quality of forages. In natural grassland, Elymus plants are also an important vector contributing to the spread of many pathogens. This pathogen spread seriously affects the productivity of grassland agricultural ecosystems. Based on a review of published domestic and international literature, the etiology, conditions of occurrence and control measurements for Elymus diseases are reported. Domestic research progress is compared with international efforts, and future development ideas for Elymus disease research are also presented. Up to March, 2023, a total of 16 fungal diseases that can infect the leaves, leaf sheaths, stems, spikes, and seeds of Elymus had been recorded worldwide. The more important among these were rust, smut, powdery mildew, ergot, choke and leaf spot diseases. At present, the main control methods for fungal diseases of Elymus are to breed and use resistant varieties, treat seed before sowing, and increase the use of ecological management strategies and chemical controls in the field. In addition, screening or breeding new varieties of Elymus species which carry Epichlo? endophytes is expected to be one of the breakthroughs in the research into Elymus disease resistance.

Key words: Elymus spp, disease, rule of occurrence, control measures