Francisco Guilhien Gomes‐Junior, Agide Gimenez Marassi, Lívia Araújo Rohr, Silvio Moure Cícero, Infrared thermographic assessment to discriminate soybean seed vigor, 2022, (https://doi.org/10.1002/agj2.21151)

Abstract

The identification of differences in vigor among seed lots and individual seeds are important for research, seed industry and market. This study investigates the infrared thermographic assessment of soybean [Glycine max (L.) Merrill] seeds to discriminate seed lots based on their vigor levels. Seeds of five commercial lots were imbibed in moistened paper towel rolls (25°C for 6 h) and thermographic measurements of average temperature, maximum temperature, minimum temperature, and thermal amplitude were performed after removing the seeds from the paper towel rolls and thermal stabilization in a controlled environment (25°C and 70% relative humidity) for 15 minutes. The results indicated higher temperature levels from seeds in the lots with lower vigor than in those with higher vigor. The Pearson's correlations from traditional tests and thermo measurements were higher for the average temperature on the seed surface. The infrared thermographic assessment is a promising protocol to discriminate seed lot vigor of soybean crops. This technique can be useful as a fast and non-invasive test in plant breeding and quality control programs of seed companies. This article is protected by copyright. All rights reserved