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Authors Hajri, R; Ouhibi, C; Mechri, M; Kourda, H; Ben Younes, M
Author Full Name Hajri, Rim; Ouhibi, Chayma; Mechri, Mouna; Kourda, Houda; Ben Younes, Mongi
Title SALINITY AND WATER DEFICIT EFFECTS ON SEED GERMINATION AND RECOVERY OF LOTUS POPULATIONS FROM NORTHERN TUNISIA
Source PAKISTAN JOURNAL OF BOTANY
Language English
Document Type Article
Author Keywords Salt stress; Endophyte; Antioxidative enzymes; Osmotic adjustment
Keywords Plus STRESS; GROWTH; GRASSLAND; TOLERANCE; MASS
Abstract Trials were set to assess salinity and water deficit effects on seed germination and recovery of populations of Lotus creticus L. and Lotus orruthopodioides L. species collected from different bioclimatic regions in northern Tunisia. Salinity treatments used were 0, 50, 100, 150, 200 and 250 mM of NaCl whereas water deficits of 0, -0.2, -0.6, -0.8 and 1.0 MPa were induced using polyethylene glycol 8000 (PEG-8000) Seeds of L. creticus L. collected from Tabarka region weighted 3.39 g/1000 seeds which were less than half of this weight for all other Lotus populations but having no effect on seeds germination capacity Lotus creticus L. seeds collected from Seddme region showed 80% germination at 250 mM of NaCl compared to 55.7% for Tabarka populations Seed germination of L. ornithopodioides L. was not affected by salinity regardless of population provenance indicating species tolerance to salinity. At -0.4 MPa water potential deficit, seed germination of L. creticus L. collected from Seddine region was reduced by 14% compared to 48.5% reduction for seeds from Tabarka provenance which would indicate its tolerance to water stress. Lotus orruthopodioides L. seed germination was reduced by 47% at -0.2 MPa and almost inhibited at -0.6 MPa water potential indicating species low tolerance to water deficit Ungermmated seeds of Lotus species due to salinity and PEG-8000 treatments recovered their germination capacity when they were transferred to distilled water regardless of species and provenances indicating osmotic inhibition of seed germination for these two Lotus species.
Author Address [Hajri, Rim; Ben Younes, Mongi] Pole Reg Rech Dev Agr Nord Ouest Semiaride, El Kef, Tunisia; [Hajri, Rim] Inst Super Agron Chott Mariem, Chott Mariem, Tunisia; [Ouhibi, Chayma] Fac Sci Tunis, Unite Physiol Biochim Reponse Plantes Contraintes, Tunis, Tunisia; [Mechri, Mouna] Inst Natl Grandes Cultures, Bou Salem, Tunisia; [Kourda, Houda] BanqueNatl Genes, Tunis, Tunisia
Reprint Address Hajri, R (reprint author), Pole Reg Rech Dev Agr Nord Ouest Semiaride, El Kef, Tunisia.; Hajri, R (reprint author), Inst Super Agron Chott Mariem, Chott Mariem, Tunisia.
E-mail Address rimhajri@yahoo.fr
Publisher PAKISTAN BOTANICAL SOC
Publisher City KARACHI
Publisher Address DEPT OF BOTANY UNIV KARACHI, 32 KARACHI, PAKISTAN
ISSN 0556-3321
29-Character Source Abbreviation PAK J BOT
ISO Source Abbreviation Pak. J. Bot.
Publication Date DEC
Year Published 2018
Volume 50
Issue 6
Beginning Page 2085
Ending Page 2090
Page Count 6
Web of Science Category Plant Sciences
Subject Category Plant Sciences
Document Delivery Number GK8JQ
Unique Article Identifier WOS:000436468600001
Plants associated with this reference

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