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dc.contributorSharma, Ramen_US
dc.creatorDuveiller, Etienneen_US
dc.date2009-09-01en_US
dc.date.accessioned2021-01-14T22:36:02Z
dc.date.available2021-01-14T22:36:02Z
dc.identifierhttps://mel.cgiar.org/dspace/limiteden_US
dc.identifier.citationEtienne Duveiller, Ram Sharma. (1/9/2009). Genetic Improvement and Crop Management Strategies to Minimize Yield Losses in Warm Non-traditional Wheat Growing Areas due to Spot Blotch Pathogen Cochliobolus sativus. Journal of Phytopathology, 157 (9), pp. 521-534.en_US
dc.identifier.urihttps://hdl.handle.net/20.500.11766/12361
dc.description.abstractSpot blotch caused by Cochliobolus sativus emerged as a major threat to wheat production in the warmer non-traditional wheat growing areas in the late 1980s. This foliar disease causes significant yield losses annually (15-20% on average in South Asia) endangering the livelihoods of millions of small farmers. Effective measures in the field are needed to mitigate the impact of spot blotch on food security in affected areas. This review summarizes the global knowledge on genetic improvement and crop management strategies to minimize yield losses based on latest field research. Recent studies have shown that spot blotch severity is highly influenced by stress factors affecting crop physiology which in turn affects host tolerance and resistance to the pathogen. Soil nutrient and water stress aggravate spot blotch-induced grain yield losses. Heat stress which is gradually increasing in Asia causes higher levels of disease damage. Genetic improvement is the cornerstone of a sustainable control of spot blotch in all affected regions. Resistance is essentially based on Chinese and South American sources and inter-specific crosses with broadly adapted semi-dwarf germplasm. A list of genotypes consistently reported in the last 10 years to harbor at least partial resistance to spot blotch, along with their inheritance of resistance, has been compiled to help breeding programmes. As the fungus is aggressive under conditions of high relative humidity and heat which in turn influences plant susceptibility, a synthesis of the different tools for scoring disease severity is given. Because resistance is incomplete, the ultimate goal is the accumulation of minor genes of resistance in adapted high yielding genotypes. This paper shows how the use of resistant varieties, timely seeding, adequate fertilization, crop rotation, and the judicious use of fungicides can be part of an integrated management strategy for controlling yield losses due to spot blotch.en_US
dc.formatPDFen_US
dc.languageenen_US
dc.publisherWiley (12 months)en_US
dc.rightsCopyrighted; all rights reserveden_US
dc.sourceJournal of Phytopathology;157,(2009) Pagination 521,534en_US
dc.subjectintegrated crop managementen_US
dc.subjectresistance breedingen_US
dc.subjectaudpcen_US
dc.subjectfoliar blighten_US
dc.titleGenetic Improvement and Crop Management Strategies to Minimize Yield Losses in Warm Non-traditional Wheat Growing Areas due to Spot Blotch Pathogen Cochliobolus sativusen_US
dc.typeJournal Articleen_US
cg.creator.idSharma, Ram: 0000-0002-7785-363Xen_US
cg.creator.ID-typeORCIDen_US
cg.subject.agrovocbipolaris sorokinianaen_US
cg.contributor.centerInternational Center for Agricultural Research in the Dry Areas - ICARDAen_US
cg.contributor.centerInternational Maize and Wheat Improvement Center - CIMMYTen_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.regionGlobalen_US
cg.contactE.Duveiller@cgiar.orgen_US
cg.identifier.doihttps://dx.doi.org/10.1111/j.1439-0434.2008.01534.xen_US
dc.identifier.statusTimeless limited accessen_US
mel.impact-factor1.179en_US


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