Effects of hydrogen peroxide application on agronomic traits of rice (Oryza sativa L.) under drought stress

Weeraphorn Jira-anunkul and Wattana Pattanagul
Additional contact information
Weeraphorn Jira-anunkul: Department of Biology, Faculty of Science, Khon Kaen University, Khon Kaen, Thailand

Plant, Soil and Environment, 2021, vol. 67, issue 4, 221-229

Abstract: Drought stress is a major environmental factor limiting crop growth and productivity. Hydrogen peroxide (H2O2) plays an essential role during stress response by acting as a signal molecule that activates multiple stress tolerance mechanisms. In this study, the effects of H2O2 on agronomic traits were studied in rice (Oryza sativa L.) cv. Khao Dawk Mali 105 (KDML 105) was subjected to drought stress. H2O2 was applied by either seed priming or foliar application method with a concentration of 1, 5, and 15 mmol/L. The results showed that both seed priming and foliar application with H2O2 improved some yield components. The tiller numbers, number of panicles, number of filled grains, filled grain weight, and harvest index were improved approximately 1.13, 1.04, 1.23, 1.21, and 1.1 times compared to the untreated plants. Foliar application, however, helps the plant by reducing yield loss as indicated by a 0.5-time reduction in the number of unfilled grain and lower unfilled grain weight. It was suggested that 5 mmol/L H2O2 was the most effective concentration to alleviate the effect of drought stress during the reproductive stage in rice.

Keywords: abiotic stress; drought tolerance; foliar spray; rainfall; antioxidant enzyme; stress acclimation (search for similar items in EconPapers)
Date: 2021
References: View references in EconPapers View complete reference list from CitEc
Citations:

Downloads: (external link)
http://pse.agriculturejournals.cz/doi/10.17221/628/2020-PSE.html (text/html)
http://pse.agriculturejournals.cz/doi/10.17221/628/2020-PSE.pdf (application/pdf)
free of charge

Related works:
This item may be available elsewhere in EconPapers: Search for items with the same title.

Export reference: BibTeX RIS (EndNote, ProCite, RefMan) HTML/Text

Persistent link: https://EconPapers.repec.org/RePEc:caa:jnlpse:v:67:y:2021:i:4:id:628-2020-pse

DOI: 10.17221/628/2020-PSE

Access Statistics for this article

Plant, Soil and Environment is currently edited by Kateřina Součková

More articles in Plant, Soil and Environment from Czech Academy of Agricultural Sciences
Bibliographic data for series maintained by Ivo Andrle ().