Show simple item record

dc.creatorMouradi,Mohammed
dc.creatorBouizgaren,Abdelaziz
dc.creatorFarissi,Mohamed
dc.creatorMakoudi,Bouchra
dc.creatorKabbadj,Ablaa
dc.creatorVery,Anne-Alienor
dc.creatorSentenac,Herve
dc.creatorQaddoury,Ahmed
dc.creatorGhoulam,Cherki
dc.date2016-09-01
dc.date.accessioned2019-04-24T21:20:18Z
dc.date.available2019-04-24T21:20:18Z
dc.identifierhttps://scielo.conicyt.cl/scielo.php?script=sci_arttext&pid=S0718-58392016000300002
dc.identifier.urihttp://revistaschilenas.uchile.cl/handle/2250/56186
dc.descriptionOsmopriming has a positive effect on the enhancement of seeds germination and seedlings growth, especially under stress conditions. This study investigated the effects of osmopriming with polyethylene glycol on alfalfa (Medicago sativa L.) seeds germination and seedlings antioxidant responses under drought stress. Seeds of five Moroccan alfalfa populations and an American Moapa variety were used to investigate the effect of osmopriming on seeds germination, seedlings growth, activities of antioxidant enzymes and membrane stability under two water deficit levels (-0.45 and -0.75 MPa). Seeds were primed with polyethylene glycol (PEG6000) (-0.6 MPa) for 24 h at 25 °C. The results showed that treated seeds presented higher germination rate and growth of 8 d-old seedlings than untreated ones. Particularly, osmoprimed seeds of ’Adis-Tata’ (Ad) and ’Riche’ (Rc) populations presented the highest final germination percentages of 90.8% and 64%, respectively, and seedlings shoot and root lengths under both levels of water deficit. The priming treatment enhanced the activity of peroxidase (PO) and catalase (CAT) and reduced the malonyldialdehyde (MDA) content and the electrolyte leakage under water deficit. Generally, the success of germination was positively correlated to PO and CAT activities and the degree of membrane stability in drought tolerant populations. However, the positive effect of the osmopriming technique on alfalfa drought tolerance remains limited in some tested populations, and severe water stress could inhibit germination and cause damages of alfalfa seedlings.
dc.formattext/html
dc.languageen
dc.publisherInstituto de Investigaciones Agropecuarias, INIA
dc.relation10.4067/S0718-58392016000300002
dc.rightsinfo:eu-repo/semantics/openAccess
dc.sourceChilean journal of agricultural research v.76 n.3 2016
dc.subjectCatalase
dc.subjectelectrolyte leakage
dc.subjectgermination
dc.subjectmalonyldialdehyde
dc.subjectMedicago sativa
dc.subjectosmopriming
dc.subjectperoxidase
dc.subjectwater deficit
dc.titleOsmopriming improves seeds germination, growth, antioxidant responses and membrane stability during early stage of Moroccan alfalfa populations under water deficit


This item appears in the following Collection(s)

Show simple item record