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Quantitative Extraction and Evaluation of Tomato Fruit Phenotypes Based on Image Recognition

文献类型： 外文期刊

作者： Zhu, Yihang 1 ; Gu, Qing 1 ; Zhao, Yiying 1 ; Wan, Hongjian 2 ; Wang, Rongqing 2 ; Zhang, Xiaobin 1 ; Cheng, Yuan 2 ;

作者机构： 1.Zhejiang Acad Agr Sci, Inst Digital Agr, Hangzhou, Peoples R China

2.Zhejiang Acad Agr Sci, Inst Vegetables, State Key Lab Qual & Safety Agroprod, Hangzhou, Peoples R China

关键词： quantitative; tomato fruit; phenotyping; image recognition; deep learning

期刊名称：FRONTIERS IN PLANT SCIENCE （ 影响因子：6.627； 五年影响因子：7.255 ）

ISSN： 1664-462X

年卷期： 2022 年 13 卷

页码：

收录情况： SCI

摘要： Tomato fruit phenotypes are important agronomic traits in tomato breeding as a reference index. The traditional measurement methods based on manual observation, however, limit the high-throughput data collection of tomato fruit morphologies. In this study, fruits of 10 different tomato cultivars with considerable differences in fruit color, size, and other morphological characters were selected as samples. Constant illumination condition was applied to take images of the selected tomato fruit samples. Based on image recognition, automated methods for measuring color and size indicators of tomato fruit phenotypes were proposed. A deep learning model based on Mask Region-Convolutional Neural Network (R-CNN) was trained and tested to analyze the internal structure indicators of tomato fruit. The results revealed that the combined use of these methods can extract various important fruit phenotypes of tomato, including fruit color, horizontal and vertical diameters, top and navel angles, locule number, and pericarp thickness, automatically. Considering several corrections of missing and wrong segmentation cases in practice, the average precision of the deep learning model is more than 0.95 in practice. This suggests a promising locule segmentation and counting performance. Vertical/horizontal ratio (fruit shape index) and locule area proportion were also calculated based on the data collected here. The measurement precision was comparable to manual operation, and the measurement efficiency was highly improved. The results of this study will provide a new option for more accurate and efficient tomato fruit phenotyping, which can effectively avoid artificial error and increase the support efficiency of relevant data in the future breeding work of tomato and other fruit crops.

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