Measuring and alleviating drought stress in pea and lentil
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Date
2023
Authors
Prysiazhniuk, O. I.
Maliarenko, О.
Biliavska, L. H.
Voitovska, V.
Kononenko, L.
Klymovych, N.
Poltoretska, N.
Strilets, O.
Voievoda, L.
Білявська, Людмила Григорівна
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Abstract
Water deficit in the soil can cause drought stress in plants and drastically affect plant growth and crop yield. Therefore, early detection of drought stress in plants followed by the timely application of agronomic measures to alleviate plant conditions is crucial. This research aimed to study the agronomic practices that could reduce the sensitivity of pea and lentil to drought stress. The practices included (i) soil amendment with moisture retainer (hydrogel), (ii) seed treatment with a growth regulator to promote root formation, (iii) application of a biological formulation to boost soil mycorrhizal biota, and (iv) foliar application of micro fertilisers. The research was carried out in Ukraine in 2015−2020. Drought stress in plants was detected by measuring chlorophyll fluorescence with a portable fluorometer Floratest and calculating the ratio of variable to maximum fluorescence Fv/Fm of the photosystem. The content of proline, high values of which in vegetative organs point out to stress in plants, was determined by colorimetric analysis using ninhydrin.
Description
Prysiazhniuk O., Maliarenko О., Biliavska L., Voitovska V., Kononenko L., Klymovych N., Poltoretska N., Strilets O., Voievoda L. Measuring and alleviating drought stress in pea and lentil. Agronomy Research. 2023. Vol. 21, Special Iss. 2. P. 560–576. doi: https://doi.org/10.15159/ar.23.023
Keywords
Chlorophyll fluorescence, portable fluorometer, hydrogel, growth regulator, micro fertiliser