Journal of Agricultural Big Data ›› 2019, Vol. 1 ›› Issue (2): 51-63.doi: 10.19788/j.issn.2096-6369.190205

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Measurement Technology of Quality Parameters of Rice Grain Based on Hyperspectral Imaging on the Visible-near Infrared

Guoxin Dai1,2,Guoxin Chen3,Wanneng Yang1,2,3,Hui Feng1,2,*()   

  1. 1.National Key Laboratory of Crop Genetic Improvement, National Center of Plant Gene Research, Huazhong Agricultural University, Wuhan 430070
    2.Agricultural Bioinformatics Key Laboratory of Hubei Province, and College of Informations, Huazhong Agricultural University, Wuhan 430070
    3.College of Plant Science & Technology, Huazhong Agricultural University, Wuhan 430070
  • Received:2019-04-12 Online:2019-06-26 Published:2019-08-21
  • Contact: Hui Feng E-mail:fenghui@mail.hzau.edu.cn

Abstract:

[Objective] The objective of this study is to develop a novel non-destructive and rapid optical method for the measurement of amylose and protein content in rice, which can be used to measure the processing characteristics of rice after cooking. [Method] A new measuring technique based on the acquisition and analysis of near-infrared hyperspectral images was developed to acquire hyperspectral indices within various wavelengths of 106 polished rice accessions in rice core germplasm resources. [Result]The model for stepwise linear regression analysis showed that the R2 of the amylose and protein content models were 0.823 and 0.837, respectively, and the five-fold cross-validation results demonstrated the stability of the models. In the wavelength range of 500-800nm, the correlation coefficient between them was higher, meanwhile, the more the index varied, the less information was available, which showed that among massive spectral data, the information concentration area was very limited.[Conclusion] The novel method based on hyperspectral imaging technology can estimate amylose and protein content non-destructively and accurately, which is the basis for further analysis of the grain quality of generous core rice accessions.

Key words: hyperspectral, rice, polished rice, amylose content, protein content, linear regression, correlation coefficient, plant phenom

CLC Number: 

  • S-3