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Article

Complex Analysis of the Efficiency of Difference Reflectance Indices on the Basis of 400–700 nm Wavelengths for Revealing the Influences of Water Shortage and Heating on Plant Seedlings

Department of Biophysics, N.I. Lobachevsky State University of Nizhny Novgorod, 603950 Nizhny Novgorod, Russia
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Academic Editor: Karel Charvat
Remote Sens. 2021, 13(5), 962; https://doi.org/10.3390/rs13050962
Received: 29 January 2021 / Revised: 1 March 2021 / Accepted: 2 March 2021 / Published: 4 March 2021
(This article belongs to the Special Issue Remote Sensing for Future Food Security and Sustainable Agriculture)
A drought, which can be often accompanied by increased temperature, is a key adverse factor for agricultural plants. Remote sensing of early plant changes under water shortage is a prospective way to improve plant cultivation; in particular, the sensing can be based on measurement of difference reflectance indices (RIs). We complexly analyzed the efficiency of RIs based on 400–700 nm wavelengths for revealing the influences of water shortage and short-term heating on plant seedlings. We measured spectra of reflected light in leaves of pea, wheat, and pumpkin under control and stress conditions. All possible RIs in the 400–700 nm range were calculated, significances of differences between experimental and control indices were estimated, and heatmaps of the significances were constructed. It was shown that the water shortage (pea seedlings) changed absolute values of large quantity of calculated RIs. Absolute values of some RIs were significantly changed for 1–5 or 2–5 days of the water shortage; they were strongly correlated to the potential quantum yield of photosystem II and relative water content in leaves. In contrast, the short-term heating (pea, wheat, and pumpkin seedlings) mainly influenced light-induced changes in RIs. Our results show new RIs, which are potentially sensitive to the action of stressors. View Full-Text
Keywords: difference reflectance indices; stressor-induced changes; significance heatmaps; pea; wheat; pumpkin; water shortage; drought; heat; remote sensing difference reflectance indices; stressor-induced changes; significance heatmaps; pea; wheat; pumpkin; water shortage; drought; heat; remote sensing
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MDPI and ACS Style

Sukhova, E.; Yudina, L.; Gromova, E.; Ryabkova, A.; Kior, D.; Sukhov, V. Complex Analysis of the Efficiency of Difference Reflectance Indices on the Basis of 400–700 nm Wavelengths for Revealing the Influences of Water Shortage and Heating on Plant Seedlings. Remote Sens. 2021, 13, 962. https://doi.org/10.3390/rs13050962

AMA Style

Sukhova E, Yudina L, Gromova E, Ryabkova A, Kior D, Sukhov V. Complex Analysis of the Efficiency of Difference Reflectance Indices on the Basis of 400–700 nm Wavelengths for Revealing the Influences of Water Shortage and Heating on Plant Seedlings. Remote Sensing. 2021; 13(5):962. https://doi.org/10.3390/rs13050962

Chicago/Turabian Style

Sukhova, Ekaterina, Lyubov Yudina, Ekaterina Gromova, Anastasiia Ryabkova, Dmitry Kior, and Vladimir Sukhov. 2021. "Complex Analysis of the Efficiency of Difference Reflectance Indices on the Basis of 400–700 nm Wavelengths for Revealing the Influences of Water Shortage and Heating on Plant Seedlings" Remote Sensing 13, no. 5: 962. https://doi.org/10.3390/rs13050962

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