Comparative Evaluation of Salicylic Acid (SA) and 2,4-Dichloro-6-{(E)-[(3methoxyphenyl)imino]methyl} Phenol (DPMP) on Growth and Salt Stress Tolerance in Forage Pea (Pisum sativum L. arvense)

Year 2022, Volume: 5 Issue: 3, 329 - 335, 01.07.2022

Nazlı Özkurt , Yasemin Bektaş

https://doi.org/10.47115/bsagriculture.1110338

Abstract

Alleviation of salt stress is becoming one of the urgent needs of agricultural production. Even though enhancement of tolerance levels with genetic variation is a common approach, exogenous applications of various compounds are a newly emerging field. Here, the effects of two different plant elicitors, salicylic acid (SA) and 2,4-dichloro-6-{(E)-[(3methoxyphenyl)imino]methyl} phenol (DPMP) on growth and stress tolerance levels of forage pea (Pisum sativum ssp. arvense L.) were evaluated. Plants were exposed to salt stress (100 mM) in addition to DPMP, SA, or DMSO (Solvent) foliar spraying. The results revealed contrasting effects for each elicitor. Under non-stressed conditions, DPMP applied plants had higher values in plant height, shoot dry weight (SDW), and taproot length, while SA applied plants had significantly higher shoot fresh weight (SFW), and DMSO applied plants had higher values in root fresh (RFW) and dry (RDW) weights, and root/shoot ratios. When we evaluated stress tolerance index (STI) levels, DPMP applied plants had higher STI values in SFW, SDW, RFW, and RDW. DPMP improved STI and biomass allocation better than SA and DMSO. These elicitors may have significant potential in abiotic stress tolerance, in addition to their well-known biotic stress eliciting roles. There is a need for further research to define appropriate doses and application times.

Keywords

Elicitor, Forage pea, Root development, Salicylic acid, Salt stress

Thanks

The authors are grateful to Assoc. Prof. Dr. Mehmet Arif Özyazıcı for providing seeds and Prof. Dr. Thomas Eulgem for providing DPMP.

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