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Proceedings Paper

Early detection of plant disease using infrared thermal imaging
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Paper Abstract

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.

Paper Details

Date Published: 23 October 2006
PDF: 7 pages
Proc. SPIE 6381, Optics for Natural Resources, Agriculture, and Foods, 638110 (23 October 2006); doi: 10.1117/12.685534
Show Author Affiliations
Huirong Xu, Zhejiang Univ. (China)
Shengpan Zhu, Zhejiang Univ. (China)
Yibin Ying, Zhejiang Univ. (China)
Huanyu Jiang, Zhejiang Univ. (China)

Published in SPIE Proceedings Vol. 6381:
Optics for Natural Resources, Agriculture, and Foods
Yud-Ren Chen; George E. Meyer; Shu-I Tu, Editor(s)

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