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dc.contributorVoss‑Fels, Kaien_US
dc.contributorAble, Jasonen_US
dc.contributorBassi, Filippoen_US
dc.contributorChristopher, Jacken_US
dc.contributorHickey, Leeen_US
dc.creatorAlahmad, Samiren_US
dc.identifier.citationSamir Alahmad, Kai Voss‑Fels, Jason Able, Filippo Bassi, Jack Christopher, Lee Hickey. (18/7/2018). Investigating root system architectural traits in durum wheat to improve adaptation to drought and crown rot conditions. France: International Society of Root Research - ISSR.en_US
dc.description.abstractDurum wheat (Triticum turgidum L. ssp. durum) producers can experience significant yield and grain losses due to crown rot (CR) disease, caused primarily by a fungal pathogen Fusarium pseudograminearum. Losses due to CR are exacerbated when disease infection coincides with terminal drought. Durum wheat is very susceptible to CR and resistant germplasm is not currently available in elite breeding pools. Deploying physiological traits for drought adaption (e.g. deeper roots), to reduce stress due to water deficit may, therefore, potentially minimise losses due to CR infection. The rapid generation advance technology, ‘speed breeding’, was used to rapidly develop recombinant inbred lines (RIL) populations (F6) derived from crosses between Australian cultivars and ICARDA elite breeding lines pre-selected for drought adaptation in Syria and Morocco. Populations were evaluated in the field and under controlled conditions for several physiological traits, including seminal root angle and number and CR severity. This provided the genetic predisposition of lines for rooting behaviour and CR susceptibility in the absence of water stress. Field experiments were established in Queensland, Australia, which allowed an examination of the value of root development traits to improve adaptation to each of the stresses. NDVI measurements were recorded weekly, which enabled modelling of the senescence pattern and calculation of stay-green traits for each genotype. Genome-wide association studies using DArT markers identified key genomic regions underpinning the traits. Our genetic analyses highlighted the genetic relationships between yield as well as above- and below-ground physiological traits. Through this study, we have provided new insights into the genetic controls and value of these traits, which we anticipate will assist breeders to design improved durum varieties that may mitigate production losses due to water deficit and CR.en_US
dc.publisherInternational Society of Root Research - ISSRen_US
dc.subjectarchitectural traitsen_US
dc.subjectroot systemen_US
dc.subjectimprove adaptationen_US
dc.titleInvestigating root system architectural traits in durum wheat to improve adaptation to drought and crown rot conditionsen_US
cg.creator.idBassi, Filippo: 0000-0002-1164-5598en_US
cg.subject.agrovocDurum Wheaten_US
cg.contributor.centerInternational Center for Agricultural Research in the Dry Areas - ICARDAen_US
cg.contributor.centerUniversity of Adelaide - Adelaideen_US
cg.contributor.centerUniversity of Queensland, Queensland Alliance for Agriculture and Food Innovation - UQ - Qaafien_US
cg.contributor.crpCGIAR Research Program on Wheat - WHEATen_US
cg.contributor.funderInternational Center for Agricultural Research in the Dry Areas - ICARDAen_US
cg.contributor.projectCRP WHEAT Phase IIen_US
cg.contributor.project-lead-instituteInternational Center for Agricultural Research in the Dry Areas - ICARDAen_US
cg.coverage.regionAustralia and New Zealanden_US
cg.coverage.regionNorthern Africaen_US
cg.coverage.regionWestern Asiaen_US
dc.identifier.statusOpen accessen_US

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