Detection of rice seed vigor by low-field nuclear magnetic resonance  

作　　者：Ping Song Peng Song Hongwei Yang Tao Yang Jing Xu Kaitian Wang 

机构地区：[1]College of Information and Electrical Engineering,Shenyang Agricultural University,Shenyang 110866,China [2]Beijing Research Center for Information Technology in Agriculture,Beijing 10097,China [3]National Research Center of Intelligent Equipment for Agriculture,Beijing 10097,China

出　　处：《International Journal of Agricultural and Biological Engineering》2018年第6期195-200,共6页国际农业与生物工程学报（英文）

基　　金：The project was supported by National Natural Science Foundation of China(Grant No.31701318 and 31601216);National Natural Science Foundation of China Projects of International Cooperation and Exchanges(Grant No.31811540396);National Key Research and Development Program of China(Grant No.2017YFD0701205);Doctoral Research Fund of Liaoning Province,China(Grant No.20170520202).

摘　　要：A new method to predict the seed vigor of rice was developed to control adulteration during the seed trading process and to address the deficiencies of traditional manual detection methods.Low-field nuclear magnetic resonance(LF-NMR)technique was used to detect the vigor of rice seeds.Four varieties(Beijing-1,Qianchonglang-2,Yanfeng-47 and Shennong-265)of rice seeds from the Rice Research Institute of Shenyang Agricultural University were chosen for the experiment.The transverse relaxation time T_(2),T_(21) and T_(22) were observed in the experiment.The peak start time of free water(transverse relaxation time T_(22)),signal amplitude of bound water(transverse relaxation time T_(21)),and moisture content decreased with the decrease in the vigor of the seeds.There were no obvious trends observed for the top of the peak and the end point of the transverse relaxation time T_(22).In addition,the start,top,and end time of the peak(transverse relaxation time T_(21)),and the signal amplitude of bound water showed no consistent changes.The results indicated that LF-NMR could be used as a method to distinguish the vigor of rice seeds rapidly.This study provided theoretical basis and technical support for the rapid detection of rice seed vigor.

关 键 词：nondestructive detection nuclear magnetic resonance transverse relaxation time signal amplitude RICE seeds vigor 

分 类 号：S51[农业科学—作物学]