基于高光谱图像技术的玉米杂交种纯度鉴定方法探索

doi:10.3964/j.issn.1000-0593(2013)10-2847-06

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Abstract The feasibility of employing hyperspectral image technology to identify maize hybrid purity was studied by analyzing the spectral information of maize hyperspectral image. The hyperspectral images of hybrid and female parent of maize variety NH101 in the range of 871～1 699 nm including 308 wavelengths were collected by hyperspectral imaging system. We extracted average spectral information of interested region on maize seed and built identification models of hybrid and female parent of maize variety NH101 based on processed spectral data. The influences of different sample laying modes (seed embryo facing the light source, seed embryo backward light source, and seed put in different locations on sample stage) and experimental environments on the performance of identification models were discussed. Spectral collected under different sample laying modes and experimental environments were used to test the robustness of identification models. The average correct acceptance rates and average correct rejection rates are more than 90%. The feature spectral bands (1 195～1 246 nm) with which the differences between hybrid and female parent are the largest were extracted by a wavelength selection method based on standard deviations, called Qs. The performance of identification models built based on spectral data in feature spectral bands reached the same level of models built based on spectral data in the full range of 925～1 597 nm. The results demonstrated the feasibility of using hyperspectral image technology as an objective and rapid method for the identification of maize hybrid purity.

Key words：Maize hybrid;Purity identification;Hyperspectral image technology

Received: 2013-01-20 Accepted: 2013-03-26

ZTFLH:

S513

Corresponding Authors: AN Dong E-mail: anclear@gmail.com;andong@semi.ac.cn

Cite this article:

JIA Shi-qiang,LIU Zhe,LI Shao-ming, et al. Study on Method of Maize Hybrid Purity Identification Based on Hyperspectral Image Technology[J]. SPECTROSCOPY AND SPECTRAL ANALYSIS, 2013, 33(10): 2847-2852.

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http://www.gpxygpfx.com/EN/10.3964/j.issn.1000-0593(2013)10-2847-06 OR http://www.gpxygpfx.com/EN/Y2013/V33/I10/2847

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