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Open AccessArticle

A Non-Invasive Analysis of Seed Vigor by Infrared Thermography

National Engineering Laboratory for Tree Breeding, Key Laboratory for Genetics and Breeding of Forest Trees and Ornamental Plants, Ministry of Education, College of Biological Sciences and Biotechnology, Beijing Forestry University, Beijing 100083, China
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Author to whom correspondence should be addressed.
These authors are equally contributed.
Plants 2020, 9(6), 768; https://doi.org/10.3390/plants9060768
Received: 11 April 2020 / Revised: 11 June 2020 / Accepted: 17 June 2020 / Published: 19 June 2020
(This article belongs to the Special Issue Biological Seed Treatments for Ecosustainable Agriculture)
This paper establishes robust regression models for fast and efficient estimation of seed vigor based on high-resolution infrared thermography. High seed quality is of great significance for agricultural and silvicultural purposes, and seed vigor is a crucial agent of seed quality. In this study, we used the non-invasive technology of infrared thermal imaging to analyze seed vigor of Ulmus pumila L. and Oryza sativa L. Temperatures of young age and aged seeds during thermal decay were monitored over time. We found that the thermal decay dynamics of U. pumila seeds were highly differential among seeds with differential vigor. Furthermore, a regression model was developed to estimate seed vigor based on its thermal decay dynamics. Similarly, a close relationship was also found between thermal decay processes and seed vigor in O. sativa. These results suggest that infrared thermography can be widely applied in non-invasive examination of seed vigor and allows fast and efficient seed screening for agricultural and silvicultural purposes in the future. View Full-Text
Keywords: infrared thermal imaging; non-invasive seed screening; seed vigor; thermal decay; Ulmus pumila L.; Oryza sativa L. infrared thermal imaging; non-invasive seed screening; seed vigor; thermal decay; Ulmus pumila L.; Oryza sativa L.
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Liu, L.; Wang, Z.; Li, J.; Zhang, X.; Wang, R. A Non-Invasive Analysis of Seed Vigor by Infrared Thermography. Plants 2020, 9, 768.

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