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dc.contributorAmri, Ahmeden_US
dc.creatorMohammadi, Rezaen_US
dc.date2013-05-07en_US
dc.date.accessioned2022-01-18T22:44:35Z
dc.date.available2022-01-18T22:44:35Z
dc.identifierhttps://mel.cgiar.org/dspace/limiteden_US
dc.identifier.citationReza Mohammadi, Ahmed Amri. (7/5/2013). Phenotypic diversity and relationships among a worldwide durum wheat (Triticum turgidum L. var. durum) germplasm collection under rainfed conditions of Iran. Crop and Pasture Science, 64 (2), pp. 87-99.en_US
dc.identifier.urihttps://hdl.handle.net/20.500.11766/66924
dc.description.abstractInformation on the variation available for different plant attributes has enabled germplasm collections to be effectively utilised in crop improvement. This study evaluated 380 durum wheat landraces, representing a worldwide durum wheat collection from 16 geographical origins, for several phenological and agronomic traits under rainfed conditions of Iran during three consecutive cropping seasons (2008–11). The experimental design was an unreplicated trial for all landraces, augmented by four repeated check cultivars. Best linear unbiased predictions (BLUPs) representing adjusted genotypic means were generated for individual trials using a mixed model. Multivariate analyses were used to measure the phenotypic diversity within the germplasm collection and relationships among landraces from different geographical regions. Combined analysis of variance indicated significant differences between years, landraces, and their interaction effects, indicating high variability among the germplasm across the years for each studied trait. Low heritability coupled with low genetic advance as a percentage of the mean was observed for days to heading (DTH) and days to maturity (DTM), whereas moderate heritability with moderate genetic advance as a percentage of the mean was exhibited for grain yield (YLD) followed by 1000-kernel weight (TKW) and plant height (PHT). According to Shannon’s phenotypic diversity index, collections from Iran (which represented a high percentage of germplasm tested) exhibited lower diversity in quantitative traits, especially for phenological traits, i.e. DTH and DTM, relative to landraces from other origins. Biplot analyses indicated several significant patterns among landraces from different geographical regions. The landraces with American and Australian origins were closely associated with each other and can be characterised by low yield productivity, high PHT, and high infestation by wheat stem sawfly (WSS). In contrast, the germplasm from Asian origins showed high yield potential and high TKW with good tolerance to WSS. The results indicated that the Iranian landraces with the lowest yield tend to be late in flowering and maturity. In conclusion, landraces with a wide genetic diversity were identified and can be used to achieve breakthrough in the durum wheat genetic improvement.en_US
dc.languageenen_US
dc.publisherCSIRO Publishingen_US
dc.rightsCopyrighted; all rights reserveden_US
dc.sourceCrop and Pasture Science;64,(2013) Pagination 87,99en_US
dc.subjectphenotypic diversityen_US
dc.subjectdurum-wheaten_US
dc.subjectwheat stem sawflyen_US
dc.subjectDurum Wheaten_US
dc.titlePhenotypic diversity and relationships among a worldwide durum wheat (Triticum turgidum L. var. durum) germplasm collection under rainfed conditions of Iranen_US
dc.typeJournal Articleen_US
cg.creator.idAmri, Ahmed: 0000-0003-0997-0276en_US
cg.creator.ID-typeORCIDen_US
cg.subject.agrovocmultivariate analysisen_US
cg.subject.agrovocagronomic traitsen_US
cg.subject.agrovoclandracesen_US
cg.contributor.centerAgricultural Research, Education and Extension Organization, Dryland Agricultural Research Institute - AREEO-DARIen_US
cg.contributor.centerInternational Center for Agricultural Research in the Dry Areas - ICARDAen_US
cg.contributor.funderInternational Center for Agricultural Research in the Dry Areas - ICARDAen_US
cg.contributor.projectCommunication and Documentation Information Services (CODIS)en_US
cg.contributor.project-lead-instituteInternational Center for Agricultural Research in the Dry Areas - ICARDAen_US
cg.date.embargo-end-dateTimelessen_US
cg.coverage.regionSouthern Asiaen_US
cg.coverage.countryIRen_US
cg.contactr.mohammadi@areo.iren_US
cg.identifier.doihttps://dx.doi.org/10.1071/CP12403en_US
dc.identifier.statusTimeless limited accessen_US
mel.impact-factor2.286en_US


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