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23 October 2006 Early detection of plant disease using infrared thermal imaging
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Proceedings Volume 6381, Optics for Natural Resources, Agriculture, and Foods; 638110 (2006)
Event: Optics East 2006, 2006, Boston, Massachusetts, United States
By using imaging techniques, plant physiological parameters can be assessed without contact with the plant and in a non-destructive way. During plant-pathogen infection, the physiological state of the infected tissue is altered, such as changes in photosynthesis, transpiration, stomatal conductance, accumulation of Salicylic acid (SA) and even cell death. In this study, the different temperature distribution between the leaves infected by tobacco mosaic virus strain-TMV-U1 and the noninfected leaves was visualized by digital infrared thermal imaging with the microscopic observations of the different structure within different species tomatoes. Results show a presymptomatic decrease in leaf temperature about 0.5-1.3 °C lower than the healthy leaves. The temperature difference allowed the discrimination between the infected and healthy leaves before the appearance of visible necrosis on leaves.
© (2006) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Huirong Xu, Shengpan Zhu, Yibin Ying, and Huanyu Jiang "Early detection of plant disease using infrared thermal imaging", Proc. SPIE 6381, Optics for Natural Resources, Agriculture, and Foods, 638110 (23 October 2006);


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