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Occurrence and damage of epidemic fungal diseases in middle and late stages of sugarcane growth in Yunnan Province of China

文献类型： 外文期刊

作者： Li, Wen-Feng 1 ; Wang, Xiao-Yan 1 ; Shan, Hong-Li 1 ; Zhang, Rong-Yue 1 ; Li, Yin-Hu 1 ; Lu, Wen-Jie 2 ; Huang, Ying-Kun 1 ;

作者机构： 1.Yunnan Acad Agr Sci, Sugarcane Res Inst, Yunnan Key Lab Sugarcane Genet Improvement, Kaiyuan 661699, Peoples R China

2.Yunnan Acad Agr Sci, Biotechnol & Germplasm Resources Inst, Kunming 650205, Yunnan, Peoples R China

关键词： Sugarcane; Low latitude plateau; Fungal diseases; Brown stripe; Pokkah boeng; Rust

期刊名称：EUROPEAN JOURNAL OF PLANT PATHOLOGY （ 影响因子：2.224； 五年影响因子：2.262 ）

ISSN： 0929-1873

年卷期： 2022 年 164 卷 3 期

页码：

收录情况： SCI

摘要： In this study, from 2015 to 2020, the occurrence and distribution of fungal diseases in the middle and late stages of sugarcane growth, and the resistance of sugarcane varieties were investigated and identified in low latitude plateaus of Yunnan Province. Yield, sucrose content and loss rates of sugarcane were measured and analyzed during the mature period. The results showed that there were three epidemic fungal diseases in the middle and late periods of sugarcane growth, including pokkah boeng, brown stripe and rust diseases. Mixed infections were common. The pathogens of pokkah boeng were Fusarium verticillioides and F. proliferatum, and the dominant species was F. verticillioides. The pathogen of brown stripe was Bipolaris setariae; the pathogens of rust were Puccinia kuehnii and P. melanocephala, and the dominant species was P. melanocephala. Among the 34 main cultivated varieties tested, there were 18 (52.9%), 24 (70.6%), and 25 (73.5%) were highly to moderately resistant to pokkah boeng, brown stripe, and rust, respectively. Among the 60 new varieties tested, there were 35 (58.3%), 32 (53.3%), and 41 (68.3%) were highly to moderately resistant to these three diseases, respectively. Among them, 14 new varieties were highly resistant and recommended for rational use. The average relative yield loss rates due to pokkah boeng, brown stripe and rust were 38.43%, 25.6% and 24.9%, and the average sugar content decreased by 3.54%, 2.82%, and 3.11%, respectively. The results improve our knowledge of sugarcane diseases in low latitude plateaus, and provided guidance for the effective control of the diseases.

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