文献类型： 外文期刊

作者： Zhao, Yaqiong ¹ ; Qin, Feng ¹ ; Xu, Fei ² ; Ma, Jinxing ¹ ; Sun, Zhenyu ³ ; Song, Yuli ² ; Zhao, Longlian ⁴ ; Li, Junhui; ¹ ;

作者机构： 1.China Agr Univ, Coll Plant Protect, Beijing 100193, Peoples R China

2.Henan Acad Agr Sci, Inst Plant Protect, Zhengzhou 450002, Henan, Peoples R China

3.Gansu Acad Agr Sci, Inst Plant Protect, Lanzhou 730070, Gansu, Peoples R China

4.China Agr Univ, Coll Informat & Elect Engn, Beijing 100083, Peoples R China

期刊名称：JOURNAL OF SPECTROSCOPY （ 影响因子：1.914； 五年影响因子：2.301 ）

ISSN： 2314-4920

年卷期： 2019 年 2019 卷

页码：

收录情况： SCI

摘要： Identifying plant pathogens for disease diagnosis and disease control strategy making is of great significance. In this study, based on near-infrared spectroscopy, a method for identifying three kinds of pathogens causing wheat smuts, including Tilletia foetida, Ustilago tritici, and Urocystis tritici, was investigated. Based on the acquired near-infrared spectral data of the teliospore samples of the three pathogens, pathogen identification models were built in different spectral regions using distinguished partial least squares (DPLS), backpropagation neural network (BPNN), and support vector machine (SVM). Satisfactory identification results were achieved using the DPLS, BPNN, and SVM models built in each of the 22 spectral regions. By contrast, the modeling effects of DPLS and SVM were better than those of BPNN. The modeling ratio of the training set to the testing set affected the identification results of the BPNN models more than those obtained using the DPLS and SVM models. In this study, a rapid, accurate, and nondestructive method was provided for plant pathogen identification, and some basis was provided for disease diagnosis, pathogen monitoring, and disease control. Moreover, some methodological references and supports were provided for identification of quarantine wheat smut fungi in plant quarantine.