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Erschienen in: Gesunde Pflanzen 6/2023

18.07.2023 | Original Article / Originalbeitrag

Plant Growth Regulators Can Affect the Physiological Traits of Foxtail Millet (Setaria italica) Under Deficit Irrigation

verfasst von: Mohsen Shokhmgar, Mohammadjavad Seghatoleslami, Seyyed Gholamreza Moosavi, Reza Baradaran

Erschienen in: Journal of Crop Health | Ausgabe 6/2023

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Abstract

In order to evaluate the effect of some plant growth regulators on yield and several physiological traits of foxtail millet under drought stress condition an experiment in split plot arranged in randomized complete block design with three replications was conducted in two years of 2017 and 2018 at the research field of Azad University of Birjand. Experimental factors included drought stress as main factor in three levels (irrigation in 30, 70 and 100% of plant water requirement) and foliar application of plant growth regulators as sub plot in five types (control and foliar application of putrescine at 88.15 mg/l, humic acid at 1.5 kg/ha, salisylic acid at 138.121 mg/l and methanol at a volume of 25%). Results showed that drought stress led to significant reduction in grain yield, relative water content, Chlorophyll a, Chlorophyll b, Chlorophyll a + b and carotenoid by 58.4, 23.5, 19.2, 38.7, 24.5 and 19% and significant increase in proline accumulation and soluble carbohydrates by 53.3 and 32.1%, respectively. Foliar application of putrescine, humic acid, salisylic acid and methanol enhanced millet grain yield by 8.3, 23.9, 17.1 and 19.6%, respectively and improvement of physiological traits in contrast to control treatment. Generally, results revealed that application of plant growth regulators improved foxtail millet grain yield under water stress via increase in photosynthetic pigments, relative water content and accumulation of osmolyte regulators. Application of humic acid under optimal irrigation condition and application of methanol in severe drought stress had the highest impact in improving grain yield.

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Metadaten
Titel
Plant Growth Regulators Can Affect the Physiological Traits of Foxtail Millet (Setaria italica) Under Deficit Irrigation
verfasst von
Mohsen Shokhmgar
Mohammadjavad Seghatoleslami
Seyyed Gholamreza Moosavi
Reza Baradaran
Publikationsdatum
18.07.2023
Verlag
Springer Berlin Heidelberg
Erschienen in
Journal of Crop Health / Ausgabe 6/2023
Print ISSN: 2948-264X
Elektronische ISSN: 2948-2658
DOI
https://doi.org/10.1007/s10343-023-00911-7

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