Effects of Salinity Stress on Grasspea (Lathyrus sativus L.) and Its Wild Relatives: Morpho-Physiological Insights at the Seedling Stage

Author:

Aloui Khawla12,Bouhlal Outmane1ORCID,Choukri Hasnae134,Gupta Priyanka5,El Bouhmadi Keltoum2,El Haddad Noureddine3ORCID,El Bargui Khadija16,Maalouf Fouad7ORCID,Kumar Shiv8ORCID

Affiliation:

1. International Center for Agricultural Research in the Dry Areas (ICARDA), Rabat 10112, Morocco

2. Laboratory of Ecology and Environment, Ben M’Sick Faculty of Sciences, University Hassan II, Casablanca 20800, Morocco

3. AgroBioSciences Program, College of Agriculture and Environmental Science, Mohammed VI Polytechnic University, Lot 660 Hay Moulay Rachid, Ben Guerir 43150, Morocco

4. Laboratoire de Biotechnologie et de Physiologie Végétales, Centre de Recherche BioBio, Faculté des Sciences, Mohammed V University, Rabat 10112, Morocco

5. Département de Phytologie, Institut de Biologie Intégrative et des Systèmes Pavillons Charles-Eugène Marchant, Université Laval, Québec, QC G1V 4G2, Canada

6. Department of Chemistry, LS3MN2E-CERNE2D, Faculty of Sciences, Mohammed V University, Rabat 10090, Morocco

7. International Center for Agricultural Research in the Dry Areas (ICARDA), Beirut 1108 2010, Lebanon

8. International Center for Agricultural Research in the Dry Areas (ICARDA), New Delhi 110012, India

Abstract

Salinity is a critical abiotic stress influencing plant growth. However, its effect on grasspea (Lathyrus sativus L.) remains insufficiently explored. The present study screened 24 germplasm accessions representing 11 Lathyrus species at the seedling stage at 0, 100, and 150 mM NaCl concentrations using a hydroponic system. Our findings indicated that salt stress had a significant effect on all assessed traits, including a reduction in relative leaf water content and SPAD index, a decline in the length and biomass of shoots and roots, and an elevation in their corresponding dry contents. The grasspea accessions displayed a wide range of responses to salt stress. This variation allowed the identification of nine tolerant accessions at both stress levels, belonging to cultivated and wild relative species, specifically LAT 495, IG 65117, L.OCH, IG 65273, IG 64931, IG 114526, IG 64892, IG 66065, and IG 65018. Four accessions, namely IG 110632, IG 114531, IG 65133, and IG 66026, demonstrated tolerance only at 100 mM NaCl concentration. Through identifying these promising accessions, our research offers crucial insights for the initial screening of tolerant genotypes in grasspea, setting the stage for further studies to decipher the intricate mechanisms of salinity tolerance in these accessions.

Funder

Government of India

Publisher

MDPI AG

Reference76 articles.

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5. Food and Agriculture Organization (2025, April 07). Global Map of Salt Affected Soils. FAO, Available online: https://openknowledge.fao.org/server/api/core/bitstreams/31be1fac-a057-4b6b-80ea-a4554910368c/content.

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