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dc.contributorVerma, Ramesh Pal Singhen_US
dc.contributorBelqadi, Loubnaen_US
dc.contributorArbaoui, Mustaphaen_US
dc.contributorRehman, Sajiden_US
dc.contributorGyawali, Sanjayaen_US
dc.creatorReda, Amezrouen_US
dc.identifier.citationAmezrou Reda, Ramesh Pal Singh Verma, Loubna Belqadi, Mustapha Arbaoui, Sajid Rehman, Sanjaya Gyawali. (8/2/2017). Genome wide association studies of barley net blotch resistance in Morocco. Morocco: International Center for Agricultural Research in the Dry Areas (ICARDA).en_US
dc.description.abstractNet blotch of barley caused by Pyrenophora teres f. teres (net form) and Pyrenophora teres f. maculata (spot form) are important foliar diseases of barley crop worldwide. In Morocco, the yield losses can reach up to 35% on susceptible cultivars under severe disease incidence. The resistance to Moroccan isolates is poorly understood and very few sources of resistance are available. The objectives of this study are to identify the genomic regions conditioning resistance to net form of net blotch (NFNB) and spot form of net blotch (SFNB), in 336 barley genotypes originating from ICARDA germplasm, as well as to identify markers tightly linked with these loci, to help in better integration of resistance in improved germplasm. An Association Mapping panel (AM-15) was genotyped using 9K iSELECT SNP markers. The panel was phenotyped in three hotspot locations in Morocco (Marchouch, Jemma Shaim, and Sidi El-Aidi research stations) for seedling and adult stage resistance in α-lattice design experiment. Association analysis using mixed linear model (structure and kinship as covariate) were employed to identify SNP markers associated with net blotch resistance. A total of 92 marker-trait associations were detected. Seven and six QTLs associated with resistance to NFNB resistance at seedling and adult stage respectively were identified on all seven barley chromosomes. A total of seven QTLs associated with seedling resistance to SFNB were identified on chromosomes 3H, 5H and 7H while four QTLs located on 3H and 7H were associated with adult stage resistance. Out of the 24 identified QTLs, five correspond to previously mapped net blotch resistance QTLs, QRpt6, QRpts4 and Rpt7. The 19 novel loci identified in the current study may represent a broad spectrum of net blotch resistance and will be useful in marker-assisted barley improvementen_US
dc.publisherInternational Center for Agricultural Research in the Dry Areas (ICARDA)en_US
dc.subjectnet blotch resistanceen_US
dc.subjectbiotic stressesen_US
dc.titleGenome wide association studies of barley net blotch resistance in Moroccoen_US
cg.creator.idVerma, Ramesh Pal Singh: 0000-0002-2621-2015en_US
cg.contributor.centerInternational Center for Agricultural Research in the Dry Areas - ICARDAen_US
cg.contributor.centerInstitute of Agronomy and Veterinary Hassan II - IAV HASSAN IIen_US
cg.contributor.crpCRP on Dryland Cereals - DCen_US
cg.contributor.funderCGIAR System Organization - CGIARen_US
cg.contributor.project-lead-instituteInternational Center for Agricultural Research in the Dry Areas - ICARDAen_US
cg.coverage.regionEastern Africaen_US
cg.coverage.regionSouthern Asiaen_US
cg.coverage.regionCentral Asiaen_US
cg.coverage.regionNorthern Africaen_US
cg.coverage.regionWestern Asiaen_US
dc.identifier.statusOpen accessen_US

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