Variation in reproductive capacity and virulence on different genotypes and resistance genes of Triticeae, in the cereal cyst nematode species complex

cg.contactunknown20@unknown.comen_US
cg.contributor.centerInternational Center for Agricultural Research in the Dry Areas - ICARDAen_US
cg.contributor.centerUniversity of Sydneyen_US
cg.contributor.centerFrench National Research Institute for Agriculture, Food and Environment - INRAE Franceen_US
cg.contributor.centerSouthern Illinois University - SIUen_US
cg.contributor.centerDjilali Bounaama University - DBKMen_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.identifier.doihttps://dx.doi.org/10.1163/156854101753389194en_US
cg.isijournalISI Journalen_US
cg.issn1388-5545en_US
cg.issn1568-5411en_US
cg.issue6en_US
cg.journalNematologyen_US
cg.subject.agrovoctriticumen_US
cg.subject.agrovocheterodera avenaeen_US
cg.volume3en_US
dc.contributorBekal, Sadiaen_US
dc.contributorValette, Sylvieen_US
dc.contributorGauthier, Jean-Pierreen_US
dc.contributorMokabli, Aissaen_US
dc.contributorJahier, Josephen_US
dc.contributorNicol, Julieen_US
dc.contributorYahyaoui, Amor Hassineen_US
dc.creatorRivoal, Rogeren_US
dc.date.accessioned2021-12-22T22:32:59Z
dc.date.available2021-12-22T22:32:59Z
dc.description.abstractTwo sets of experiments in 1998 and 1999 studied the (a)virulence status of 14 populations of Heterodera avenae, and two populations each of H. filipjevi and H. latipons towards the resistance genes and genotypes of Triticeae, presently known to be resistant to H. avenae, the main species of the cereal cyst nematode (CCN) species complex. Susceptible controls were Triticum aestivum cv. Arminda and Triticum turgidum cv. Cham1. Even in controlled experimental conditions, host responses differed between replicates in the same test and between consecutive tests for unexplained reasons. In spite of that, it has been confirmed that several of these CCN populations differ in their intrinsic capacity to reproduce, and this has to be taken into account in resistance screening. Consequently, the (a)virulence status of a CCN population is better established by a qualitative demarcation between resistant and susceptible plant genotypes based on an average of one cyst limit per plant. The matrix inferred from such a classification of host responses of pooled 1998 and 1999 data showed a complex distribution of avirulent and virulent phenotypes in these CCN populations which seems to arise from a mosaic-like evolution. The more or less wide virulence spectrum shown by this complex of populations and species is discussed in relation to their phylogenetic relationships. Correspondence factor analysis of the pooled data demonstrated a geographical demarcation between several populations of H. avenae and the representatives of H. filipjevi and H. latipons for their (a)virulence to either Cre1 or Cre3 genes and T. aestivum AUS4930 genotype. This could reveal local or regional selection of new pathotypes, more particularly in H. avenae. Genetic introgression to improve resistance to these nematodes in both bread and durum wheats is discussed for regional and global applications.en_US
dc.identifierhttps://mel.cgiar.org/dspace/limiteden_US
dc.identifier.citationRoger Rivoal, Sadia Bekal, Sylvie Valette, Jean-Pierre Gauthier, Aissa Mokabli, Joseph Jahier, Julie Nicol, Amor Hassine Yahyaoui. (1/12/2001). Variation in reproductive capacity and virulence on different genotypes and resistance genes of Triticeae, in the cereal cyst nematode species complex. Nematology, 3 (6), pp. 581-592.en_US
dc.identifier.statusTimeless limited accessen_US
dc.identifier.urihttps://hdl.handle.net/20.500.11766/66655
dc.languageenen_US
dc.publisherBrill Academic Publishersen_US
dc.sourceNematology;3,(2001) Pagination 581-592en_US
dc.subjectpathotypeen_US
dc.subjecth filipjevien_US
dc.subjecthost reactionen_US
dc.subjecth latiponsen_US
dc.titleVariation in reproductive capacity and virulence on different genotypes and resistance genes of Triticeae, in the cereal cyst nematode species complexen_US
dc.typeJournal Articleen_US
dcterms.available2001-12-01en_US
dcterms.extent581-592en_US
mel.impact-factor1.442en_US

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