Early Detection of Corynespora Spot on Cucumber Leaves Based on FTIR Spectroscopy

文献类型： 外文期刊

第一作者： Chai A-li

作者： Chai A-li;Li Bao-ju;Shi Yan-xia;Xie Xue-wen

作者机构：

关键词： Fourier transform infrared spectroscopy;FTIR;Corynespora spot on cucumber leaves;Early detection;Cluster analysis

期刊名称：SPECTROSCOPY AND SPECTRAL ANALYSIS （ 影响因子：0.589； 五年影响因子：0.504 ）

ISSN： 1000-0593

年卷期： 2011 年 31 卷 6 期

页码：

收录情况： SCI

摘要： Fourier transform infrared spectroscopy(FTIR) technique was applied in the early detection of corynespora spot on cucumber leaves while the symptom had not appeared. The cucumber leaves were inoculated with Corynespora cassiicola. By observing the changes in the FTIR spectra of infected cucumber leaves at various times of post-infection, three sensitive bands, 1 735, 1 545 and 1 240 cm(-1) were selected for the identification of cucumber corynespora leaf spot. According to the peak areas at these sensitive bands, cucumber leaf samples infected with C. cassiicola and control uninfected leaf samples could be classified correctly. Results clearly demonstrated that the FTIR technology is an available one for the early detection of corynespora spot on cucumber leaves while the symptom has not appeared and it provides a new method for the early detection of corynespora spot.

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