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Li J, Li Q, Luo W, Zeng L, Luo L. Rapid Color Quality Evaluation of Needle-Shaped Green Tea Using Computer Vision System and Machine Learning Models. Foods 2024; 13:2516. [PMID: 39200443 PMCID: PMC11353727 DOI: 10.3390/foods13162516] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/09/2024] [Revised: 08/08/2024] [Accepted: 08/09/2024] [Indexed: 09/02/2024] Open
Abstract
Color characteristics are a crucial indicator of green tea quality, particularly in needle-shaped green tea, and are predominantly evaluated through subjective sensory analysis. Thus, the necessity arises for an objective, precise, and efficient assessment methodology. In this study, 885 images from 157 samples, obtained through computer vision technology, were used to predict sensory evaluation results based on the color features of the images. Three machine learning methods, Random Forest (RF), Support Vector Machine (SVM) and Decision Tree-based AdaBoost (DT-AdaBoost), were carried out to construct the color quality evaluation model. Notably, the DT-Adaboost model shows significant potential for application in evaluating tea quality, with a correct discrimination rate (CDR) of 98.50% and a relative percent deviation (RPD) of 14.827 in the 266 samples used to verify the accuracy of the model. This result indicates that the integration of computer vision with machine learning models presents an effective approach for assessing the color quality of needle-shaped green tea.
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Affiliation(s)
- Jinsong Li
- Integrative Science Center of Germplasm Creation in Western China (CHONGQING) Science City, College of Food Science, Southwest University, Chongqing 400715, China (L.L.)
- Chongqing Key Laboratory of Speciality Food Co-Built by Sichuan and Chongqing, Southwest University, No. 2 Tiansheng Road, Beibei District, Chongqing 400715, China
- College of Food Science, Southwest University, No. 2 Tiansheng Road, Beibei District, Chongqing 400715, China
| | - Qijun Li
- College of Computer and Information Science, Southwest University, No. 2 Tiansheng Road, Beibei District, Chongqing 400715, China
| | - Wei Luo
- Integrative Science Center of Germplasm Creation in Western China (CHONGQING) Science City, College of Food Science, Southwest University, Chongqing 400715, China (L.L.)
- Chongqing Key Laboratory of Speciality Food Co-Built by Sichuan and Chongqing, Southwest University, No. 2 Tiansheng Road, Beibei District, Chongqing 400715, China
- College of Food Science, Southwest University, No. 2 Tiansheng Road, Beibei District, Chongqing 400715, China
| | - Liang Zeng
- Integrative Science Center of Germplasm Creation in Western China (CHONGQING) Science City, College of Food Science, Southwest University, Chongqing 400715, China (L.L.)
- Chongqing Key Laboratory of Speciality Food Co-Built by Sichuan and Chongqing, Southwest University, No. 2 Tiansheng Road, Beibei District, Chongqing 400715, China
- College of Food Science, Southwest University, No. 2 Tiansheng Road, Beibei District, Chongqing 400715, China
| | - Liyong Luo
- Integrative Science Center of Germplasm Creation in Western China (CHONGQING) Science City, College of Food Science, Southwest University, Chongqing 400715, China (L.L.)
- Chongqing Key Laboratory of Speciality Food Co-Built by Sichuan and Chongqing, Southwest University, No. 2 Tiansheng Road, Beibei District, Chongqing 400715, China
- College of Food Science, Southwest University, No. 2 Tiansheng Road, Beibei District, Chongqing 400715, China
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Luo B, Sun H, Zhang L, Chen F, Wu K. Advances in the tea plants phenotyping using hyperspectral imaging technology. FRONTIERS IN PLANT SCIENCE 2024; 15:1442225. [PMID: 39148615 PMCID: PMC11324491 DOI: 10.3389/fpls.2024.1442225] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 06/01/2024] [Accepted: 07/15/2024] [Indexed: 08/17/2024]
Abstract
Rapid detection of plant phenotypic traits is crucial for plant breeding and cultivation. Traditional measurement methods are carried out by rich-experienced agronomists, which are time-consuming and labor-intensive. However, with the increasing demand for rapid and high-throughput testing in tea plants traits, digital breeding and smart cultivation of tea plants rely heavily on precise plant phenotypic trait measurement techniques, among which hyperspectral imaging (HSI) technology stands out for its ability to provide real-time and rich-information. In this paper, we provide a comprehensive overview of the principles of hyperspectral imaging technology, the processing methods of cubic data, and relevant algorithms in tea plant phenomics, reviewing the progress of applying hyperspectral imaging technology to obtain information on tea plant phenotypes, growth conditions, and quality indicators under environmental stress. Lastly, we discuss the challenges faced by HSI technology in the detection of tea plant phenotypic traits from different perspectives, propose possible solutions, and envision the potential development prospects of HSI technology in the digital breeding and smart cultivation of tea plants. This review aims to provide theoretical and technical support for the application of HSI technology in detecting tea plant phenotypic information, further promoting the trend of developing high quality and high yield tea leaves.
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Affiliation(s)
- Baidong Luo
- College of Artificial Intelligence, Hangzhou Dianzi University, Hangzhou, China
| | - Hongwei Sun
- College of Artificial Intelligence, Hangzhou Dianzi University, Hangzhou, China
| | - Leilei Zhang
- Key Laboratory of Specialty Agri-Products Quality and Hazard Controlling Technology of Zhejiang Province, College of Life Sciences, China Jiliang University, Hangzhou, China
| | - Fengnong Chen
- College of Artificial Intelligence, Hangzhou Dianzi University, Hangzhou, China
| | - Kaihua Wu
- College of Artificial Intelligence, Hangzhou Dianzi University, Hangzhou, China
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Mao Y, Li H, Xu Y, Wang S, Yin X, Fan K, Ding Z, Wang Y. Early detection of gray blight in tea leaves and rapid screening of resistance varieties by hyperspectral imaging technology. JOURNAL OF THE SCIENCE OF FOOD AND AGRICULTURE 2024. [PMID: 39030928 DOI: 10.1002/jsfa.13756] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/01/2023] [Revised: 06/27/2024] [Accepted: 07/07/2024] [Indexed: 07/22/2024]
Abstract
BACKGROUND Gray blight (GB) is a significant disease of tea leaves, posing a severe threat to both the yield and quality. In this study, the process of leaf infection by a pathogenic isolate of the GB disease (DDZ-6) was simulated. Hyperspectral images of normal leaves, infected leaves without symptoms, and infected leaves with mild and moderate symptoms were collected. Combining convolution neural network (CNN), long short-term memory (LSTM), and support vector machine (SVM) algorithms, the early detection model of GB disease, and the rapid screening model of resistant varieties were established. The generality of this method was verified by collecting datasets under field conditions. RESULTS The visible red-light band demonstrated a pronounced responsiveness to GB disease, with three sensitive bands identified through rigorous screening processes utilizing uninformative variable elimination (UVE), competitive adaptive reweighted sampling (CARS), and the successive projections algorithm (SPA). The 693, 727, and 766 nm bands emerged as highly sensitive indicators of GB. Under ideal conditions, the CARS-LSTM model excelled in early detection of GB, achieving an accuracy of 92.6%. However, under field conditions, the combination of 693 and 727 nm bands integrated with a CNN provided the most effective early detection model, attaining an accuracy of 87.8%. For screening tea varieties resistant to GB, the SPA-LSTM model excelled, achieving an accuracy of 82.9%. CONCLUSION This study provides a core algorithm for a GB disease instrument with detection capabilities, which is of great importance for the early prevention of GB disease in tea plantations. © 2024 Society of Chemical Industry.
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Affiliation(s)
- Yilin Mao
- Tea Research Institute, Shandong Academy of Agricultural Sciences, Jinan, China
| | - He Li
- Tea Research Institute, Shandong Academy of Agricultural Sciences, Jinan, China
| | - Yang Xu
- College of Horticulture, Qingdao Agricultural University, Qingdao, China
| | - Shuangshuang Wang
- Tea Research Institute, Shandong Academy of Agricultural Sciences, Jinan, China
| | - Xinyue Yin
- College of Horticulture, Qingdao Agricultural University, Qingdao, China
| | - Kai Fan
- College of Horticulture, Qingdao Agricultural University, Qingdao, China
| | - Zhaotang Ding
- Tea Research Institute, Shandong Academy of Agricultural Sciences, Jinan, China
- College of Horticulture, Qingdao Agricultural University, Qingdao, China
| | - Yu Wang
- College of Horticulture, Qingdao Agricultural University, Qingdao, China
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Zaman S, Shen J, Wang S, Song D, Wang H, Ding S, Pang X, Wang M, Wang Y, Ding Z. Effect of Shading on Physiological Attributes and Proteomic Analysis of Tea during Low Temperatures. PLANTS (BASEL, SWITZERLAND) 2023; 13:63. [PMID: 38202371 PMCID: PMC10780538 DOI: 10.3390/plants13010063] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/25/2023] [Revised: 12/21/2023] [Accepted: 12/22/2023] [Indexed: 01/12/2024]
Abstract
Shading is an important technique to protect tea plantations under abiotic stresses. In this study, we analyzed the effect of shading (SD60% shade vs. SD0% no-shade) on the physiological attributes and proteomic analysis of tea leaves in November and December during low temperatures. The results revealed that shading protected the tea plants, including their soil plant analysis development (SPAD), photochemical efficiency (Fv/Fm), and nitrogen content (N), in November and December. The proteomics analysis of tea leaves was determined using tandem mass tags (TMT) technology and a total of 7263 proteins were accumulated. Further, statistical analysis and the fold change of significant proteins (FC < 0.67 and FC > 1.5 p < 0.05) revealed 14 DAPs, 11 increased and 3 decreased, in November (nCK_vs_nSD60), 20 DAPs, 7 increased and 13 decreased, in December (dCK_vs_dSD60), and 12 DAPs, 3 increased and 9 decreased, in both November and December (nCK_vs_nSD60). These differentially accumulated proteins (DAPs) were dehydrins (DHNs), late-embryogenesis abundant (LEA), thaumatin-like proteins (TLPs), glutathione S-transferase (GSTs), gibberellin-regulated proteins (GAs), proline-rich proteins (PRPs), cold and drought proteins (CORA-like), and early light-induced protein 1, which were found in the cytoplasm, nucleus, chloroplast, extra cell, and plasma membrane, and functioned in catalytic, cellular, stimulus-response, and metabolic pathways. In conclusion, the proliferation of key proteins was triggered by translation and posttranslational modifications, which might sustain membrane permeability in tea cellular compartments and could be responsible for tea protection under shading during low temperatures. This study aimed to investigate the impact of the conventional breeding technique (shading) and modern molecular technologies (proteomics) on tea plants, for the development and protection of new tea cultivars.
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Affiliation(s)
- Shah Zaman
- Tea Research Institute, Shandong Academy of Agricultural Sciences, Jinan 250100, China; (S.Z.); (J.S.); (S.W.)
- School of Tea and Coffee & School of Bioinformatics and Engineering, Pu’er University, 6 Xueyuan Road, Pu’er 665000, China
- International Joint Laboratory of Digital Protection and Germplasm Innovation and Application of China-Laos Tea Tree Resources in Yunnan Province, Pu’er University, 6 Xueyuan Road, Pu’er 665000, China
| | - Jiazhi Shen
- Tea Research Institute, Shandong Academy of Agricultural Sciences, Jinan 250100, China; (S.Z.); (J.S.); (S.W.)
| | - Shuangshuang Wang
- Tea Research Institute, Shandong Academy of Agricultural Sciences, Jinan 250100, China; (S.Z.); (J.S.); (S.W.)
| | - Dapeng Song
- Rizhao Tea Research Institute, Rizhao 276800, China; (D.S.); (H.W.); (S.D.); (X.P.); (M.W.)
| | - Hui Wang
- Rizhao Tea Research Institute, Rizhao 276800, China; (D.S.); (H.W.); (S.D.); (X.P.); (M.W.)
| | - Shibo Ding
- Rizhao Tea Research Institute, Rizhao 276800, China; (D.S.); (H.W.); (S.D.); (X.P.); (M.W.)
| | - Xu Pang
- Rizhao Tea Research Institute, Rizhao 276800, China; (D.S.); (H.W.); (S.D.); (X.P.); (M.W.)
| | - Mengqi Wang
- Rizhao Tea Research Institute, Rizhao 276800, China; (D.S.); (H.W.); (S.D.); (X.P.); (M.W.)
| | - Yu Wang
- Tea Research Institute, Qingdao Agricultural University, Qingdao 266109, China;
| | - Zhaotang Ding
- Tea Research Institute, Shandong Academy of Agricultural Sciences, Jinan 250100, China; (S.Z.); (J.S.); (S.W.)
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Xu Y, Mao Y, Li H, Sun L, Wang S, Li X, Shen J, Yin X, Fan K, Ding Z, Wang Y. A deep learning model for rapid classification of tea coal disease. PLANT METHODS 2023; 19:98. [PMID: 37689676 PMCID: PMC10492339 DOI: 10.1186/s13007-023-01074-2] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/17/2023] [Accepted: 08/29/2023] [Indexed: 09/11/2023]
Abstract
BACKGROUND The common tea tree disease known as "tea coal disease" (Neocapnodium theae Hara) can have a negative impact on tea yield and quality. The majority of conventional approaches for identifying tea coal disease rely on observation with the human naked eye, which is labor- and time-intensive and frequently influenced by subjective factors. The present study developed a deep learning model based on RGB and hyperspectral images for tea coal disease rapid classification. RESULTS Both RGB and hyperspectral could be used for classifying tea coal disease. The accuracy of the classification models established by RGB imaging using ResNet18, VGG16, AlexNet, WT-ResNet18, WT-VGG16, and WT-AlexNet was 60%, 58%, 52%, 70%, 64%, and 57%, respectively, and the optimal classification model for RGB was the WT-ResNet18. The accuracy of the classification models established by hyperspectral imaging using UVE-LSTM, CARS-LSTM, NONE-LSTM, UVE-SVM, CARS-SVM, and NONE-SVM was 80%, 95%, 90%, 61%, 77%, and 65%, respectively, and the optimal classification model for hyperspectral was the CARS-LSTM, which was superior to the model based on RGB imaging. CONCLUSIONS This study revealed the classification potential of tea coal disease based on RGB and hyperspectral imaging, which can provide an accurate, non-destructive, and efficient classification method for monitoring tea coal disease.
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Affiliation(s)
- Yang Xu
- Tea Research Institute, Qingdao Agricultural University, Qingdao, 266109, China
| | - Yilin Mao
- Tea Research Institute, Qingdao Agricultural University, Qingdao, 266109, China
| | - He Li
- Tea Research Institute, Qingdao Agricultural University, Qingdao, 266109, China
| | - Litao Sun
- Tea Research Institute, Shandong Academy of Agricultural Sciences, Jinan, 250100, China
| | - Shuangshuang Wang
- Tea Research Institute, Shandong Academy of Agricultural Sciences, Jinan, 250100, China
| | - Xiaojiang Li
- Tea Research Institute, Shandong Academy of Agricultural Sciences, Jinan, 250100, China
| | - Jiazhi Shen
- Tea Research Institute, Shandong Academy of Agricultural Sciences, Jinan, 250100, China
| | - Xinyue Yin
- Tea Research Institute, Qingdao Agricultural University, Qingdao, 266109, China
| | - Kai Fan
- Tea Research Institute, Qingdao Agricultural University, Qingdao, 266109, China
| | - Zhaotang Ding
- Tea Research Institute, Shandong Academy of Agricultural Sciences, Jinan, 250100, China.
| | - Yu Wang
- Tea Research Institute, Qingdao Agricultural University, Qingdao, 266109, China.
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