Fast Identification of Transgenic Soybean Varieties Based Near Infrared Hyperspectral Imaging Technology
WANG Hai-long1, YANG Xiang-dong2, ZHANG Chu1, GUO Dong-quan2, BAO Yi-dan1*, HE Yong1, LIU Fei1
1. College of Biosystems Engineering and Food Science, Zhejiang University, Hangzhou 310058, China 2. Agriculture Biotechnology Research Center, Jilin Academy of Agricultural Sciences, Changchun 130033, China
Abstract：Near-infrared hyperspectral imaging technology combined with chemometrics was applied for rapid and non-invasive transgenic soybeans variety identification. Three different non-GMO parent soybeans(HC6, JACK, TL1)and their transgenic soybeans were chosen as the research object. The developed hyperspectral imaging system was used to acquire the hyperspectral images in the spectral range of 874~1 734 nm with 256 bands of soybeans, and the reflectance spectra were extracted from the region of interest (ROI) in the images. After eliminating the obvious noises, the moving average(MA)was applied as smooth pretreatment, and the wavelengths from 941~1 646 nm were used for later analysis. Partial least squares-discriminant analysis (PLS-DA)was employed as pattern recognition method to class the three different non-GMO parent soybeans. The classification accuracy of both the calibration set and the prediction set were 97.50% and 100% for the HC6, 100% and 100% for the JACK, 96.25% and 92.50% for the TL1, which indicated that hyperspectral imaging technology could identify the varieties of the non-GMO parent soybeans. Then PLS-DA was applied to classify non-GMO parent soybean and its transgenic soybean cultivars for building discriminant models. For the full spectra, the classification accuracy of both the calibration set and the prediction set were 99.17% and 99.17% for the HC6 and its transgenic soybean cultivars, 87.19% and 81.25% for the JACK and its transgenic soybean cultivars, 99.17% and 98.33% for the TL1 and its transgenic soybean cultivars, respectively. The sensitive wavelengths were selected by x-loading weights, and the classification accuracy of the calibration set and prediction set of PLS-DA models based on sensitive wavelengths were 72.50% and 80% for the HC6 and its transgenic soybean cultivars, 80.63% and 79.38% for the JACK and its transgenic soybean cultivars, 85% and 85% for the TL1 and its transgenic soybean cultivars, respectively. These results showed that the pattern recognition for non-GMO parent soybean and their transgenic soybeans was feasible, and the selected sensitive wavelengths could be used for the pattern recognition of non-GMO parent soybeans and transgenic soybeans. The overall results indicated that it was feasible to use near-infrared hyperspectral imaging technology for the pattern recognition of the non-GMO parent soybeans varieties, non-GMO parent soybean and its transgenic soybeans. This study also provided a new alternative for rapid and non-destructive accurate identification of transgenic soybean.
王海龙1，杨向东2，张 初1，郭东全2，鲍一丹1*，何 勇1, 刘 飞1. 近红外高光谱成像技术用于转基因大豆快速无损鉴别研究[J]. 光谱学与光谱分析, 2016, 36(06): 1843-1847.
WANG Hai-long1, YANG Xiang-dong2, ZHANG Chu1, GUO Dong-quan2, BAO Yi-dan1*, HE Yong1, LIU Fei1. Fast Identification of Transgenic Soybean Varieties Based Near Infrared Hyperspectral Imaging Technology. SPECTROSCOPY AND SPECTRAL ANALYSIS, 2016, 36(06): 1843-1847.
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