Effect of Exogenous Application of Amino Acids L-Arginine and Glycine on Maize under Temperature Stress
| Autor: | Idzi Siatkowski, Roman Kierzek, R. Krawczyk, Kinga Matysiak, Jolanta Kowalska, Wojciech Miziniak |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2020 |
| Předmět: |
0106 biological sciences
chemistry.chemical_classification abiotic stress Arginine Abiotic stress optimal and stressful conditions lcsh:S food and beverages 010501 environmental sciences 01 natural sciences Temperature stress fluctuating temperature Amino acid Crop lcsh:Agriculture biostimulants Animal science chemistry Shoot Glycine Radicle Agronomy and Crop Science 010606 plant biology & botany 0105 earth and related environmental sciences |
| Zdroj: | Agronomy, Vol 10, Iss 769, p 769 (2020) Agronomy Volume 10 Issue 6 |
| ISSN: | 2073-4395 |
| Popis: | Temperature strongly influences the growth of maize, particularly in the early growth stages. The exogenous application of some amino acids has been proven to have a positive effect on plant growth and development under stressful conditions. The objective of the study was to evaluate the response of maize that was grown under an optimal and stress (fluctuating) temperature to L-Arginine (L-Arg) and Glycine (Gly) application. In the study, it was assumed that the exogenously applied amino acids would alleviate the adverse effects of temperature stress on the maize height, as well as on the biomass of shoots and roots. Ten concentrations of each amino acid from 0.006 mM to 9.0 mM were tested under constant temperature conditions 20&ndash 22 ° C/23&ndash 25 ° C (night/day) an fluctuating stress of rising and dropping temperatures between 12&ndash 15 ° C (night) and 30&ndash 38 ° C (day). The amino acids were applied to the crop at growth stages V3&ndash V4. In plants that were obtained from seeds pre-treated with L-Arg and Gly, the amino acids increased both the length of radicles and the number of lateral roots. A large discrepancy between the effects of the two amino acids was observed after foliar application. Under optimal thermal conditions, L-Arg increased the mass of shoots and roots by 55&ndash 59%. Under stress conditions, root mass was increased even by 100% when compared to the control plants. The best results were recorded at concentrations of 6 mM and 3 mM. Plants that were treated with Gly concentrations generally reached the height of untreated plants or less. It was shown that Gly applied at concentrations of 0.2 mM to 3 mM has a negative effect on the fresh mass of the crop. |
| Databáze: | OpenAIRE |
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