Selection of morpho-physiological traits associated with terminal drought stress tolerance in durum wheat (Triticum durum Desf.) genotypes

cg.contactayedsourour@yahoo.fren_US
cg.contributor.centerNational Agronomic Institute of Tunisia - INATen_US
cg.contributor.centerEcole Supérieure d’Agriculture du Kef - ESA Kefen_US
cg.contributor.crpCGIAR Research Program on Dryland Systems - DSen_US
cg.contributor.crpCGIAR Research Program for Managing and Sustaining Crop Collections - Genebanksen_US
cg.contributor.funderInternational Fund for Agricultural Development - IFADen_US
cg.contributor.projectEnhanced small-holder wheat-legume cropping systems to improve food security under changing climate in the drylands of West Asia and North Africaen_US
cg.contributor.project-lead-instituteInternational Center for Agricultural Research in the Dry Areas - ICARDAen_US
cg.coverage.countryTNen_US
cg.coverage.regionNorthern Africaen_US
cg.issue2en_US
cg.journalJournal of New Sciencesen_US
cg.subject.agrovocdrought toleranceen_US
cg.subject.agrovoccorrelationen_US
cg.subject.agrovocyield componentsen_US
cg.subject.agrovoclandracesen_US
cg.subject.agrovocWheaten_US
cg.volume11en_US
dc.contributorOthmani, Afefen_US
dc.contributorMrabit, Mayadaen_US
dc.contributorRassaa, Neilaen_US
dc.contributorMbarki, A.en_US
dc.contributorRezgui, M.en_US
dc.contributorMongi, Ben younesen_US
dc.creatorAyed, Sourouren_US
dc.date.accessioned2017-11-28T19:01:39Z
dc.date.available2017-11-28T19:01:39Z
dc.description.abstractIn order to study the response for drought induced at critical stages of grain filling of 8 durum wheat genotypes, five Tunisian landraces (Biskri, Mahmoudi, Agili, Chili and Jeneh khotifa) and three improved genotypes (Karim, Nasr and Rezzak), that differ in adoption to drought stress, were studied under three water regime: rainfed conditions (control), 50% Field Capacity (Treatment 1) and 100% Field Capacity (Treatment 2). Chlorophyll index, leaf area, plant height, own length, peduncle length, tiller number/plant, spike number/plant, grain number/spike and the relationship between some of these morphological and physiological traits and yield components were studied for the eight durum wheat genotypes. Analysis of variance has indicated that there were significant (P<0.01) differences among genotypes in which indicate that there are great variations among genotypes. The water regime stress affects significantly (P<0.01) various morpho-physiological and agronomical traits. Our results showed significant reduction in all morpho-physiological and agronomical traits in all varieties under rainfed conditions in comparison with 50% FC and 100% FC regime water. The best results were obtained under 100% Field Capacity. Chlorophyll index, leaf area, peduncle length and Own length were significantly correlated to the number of spike /plant (r = 0.58**, r = 0.52**, r = 0.74**, r = 0.52**) and the number of grains/spike (r = 0.62**, r = 0.60**, r = 0.78**, r = 0.55**). Therefore, the use of morpho-physiological traits as an indirect selection would be important in increase yield-based selection procedures. The variety Biskri showed the important spike number/plant and grain number/spike in comparison to all varieties studied. This genotype can be used in selection breeding program.en_US
dc.formatPDFen_US
dc.identifierhttp://www.jnsciences.org/agri-biotech/19-volume-11/42-selection-of-morpho-physiological-traits-associated-with-terminal-drought-stress-tolerance-in-durum-wheat-triticum-durum-desf-genotypes.htmlen_US
dc.identifierhttps://mel.cgiar.org/reporting/downloadmelspace/hash/jIYFoOVY/v/9877399edc471ba8afef0773b4f1b59ben_US
dc.identifier.citationSourour Ayed, Afef Othmani, Mayada Mrabit, Neila Rassaa, A. Mbarki, M. Rezgui, Ben younes Mongi. (30/10/2014). Selection of morpho-physiological traits associated with terminal drought stress tolerance in durum wheat (Triticum durum Desf. ) genotypes. Journal of New Sciences, 11 (2), pp. 9-16.en_US
dc.identifier.statusOpen accessen_US
dc.identifier.urihttps://hdl.handle.net/20.500.11766/7537
dc.languageenen_US
dc.publisherJournal of New Sciencesen_US
dc.rightsCC-BY-4.0en_US
dc.sourceJournal of New Sciences;11,(2014) Pagination 9-16en_US
dc.titleSelection of morpho-physiological traits associated with terminal drought stress tolerance in durum wheat (Triticum durum Desf.) genotypesen_US
dc.typeJournal Articleen_US
dcterms.available2014-10-30en_US
dcterms.extent9-16en_US
mel.project.openhttps://mel.cgiar.org/projects/46en_US

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