Monitoring and Risk Prediction of Low-Temperature Stress in Strawberries through Fusion of Multisource Phenotypic Spatial Variability Features
文献类型： 外文期刊
作者： Jiang, Nan 1 ; Yang, Zaiqiang 1 ; Zhang, Hanqi 1 ; Zhang, Chengjing 1 ; Wang, Canyue 1 ; Wang, Na 1 ; Xu, Chao 2 ;
作者机构： 1.Nanjing Univ Informat Sci & Technol, Sch Ecol & Appl Meteorol, Nanjing 210044, Peoples R China
2.Jiangxi Acad Agr Sci, Inst Hort, Nanchang 330299, Peoples R China
关键词： Cold stress monitoring and early warning; Explainable machine learning; Fragaria x ananassa Duch.; Phenotypic spatial variability features; Photosynthetic physiology
期刊名称：PLANT PHENOMICS （ 影响因子：6.4； 五年影响因子：7.1 ）
ISSN： 2643-6515
年卷期： 2025 年 7 卷 2 期
页码：
收录情况： SCI
摘要： Capturing crop physiological information by phenotyping is a key trend in smart agriculture. However, current studies underutilize spatial structural information in phenotypic imaging. To evaluate the feasibility of crop cold stress monitoring based on phenotypic spatial variability, we conducted controlled experiments on 'Toyonoka' strawberry plants under four dynamic cooling gradients and three stress durations and analyzed the dependence of their photosynthetic physiology and phenotypic traits on temperature-time interactions. The results revealed that NPQ/1D-Parallel/TENT, Y(NO)/2D-Region/INEM, and qP/1D-Parallel/TENT presented the highest mutual information, with the maximum net photosynthetic rate (Pmax), relative electrolyte conductivity (REC), and total chlorophyll content (Chla + b), respectively. The difference between the Photosynthetic Physiological Potential Index (PPPI) and relative negative accumulated temperature (RNAT)/650 effectively was used to calculate the cold damage risk (CDRI). An XGBoost-based model integrating the PPPI and RNAT outperformed AdaBoost and RandomForest, achieving an R2 of 0.98, an RMSE of 0.337, a classification accuracy of 92.13 %, and a Kappa coefficient of 0.904. qP/1D-Parallel/TENT contributed the most to the model. This study provides a scientific basis for phenotypic information mining and agro-meteorological disaster monitoring.
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