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Mapping of chromosome arm 7DL of Triticum aestivum L.

dc.contributor.advisorMarais, G. F.
dc.contributor.authorHeyns, I.C.en_ZA
dc.contributor.otherUniversity of Stellenbosch. Faculty of Agrisciences. Dept. of Genetics.
dc.date.accessioned2006-11-21T07:12:49Zen_ZA
dc.date.accessioned2010-06-01T08:27:55Z
dc.date.available2006-11-21T07:12:49Zen_ZA
dc.date.available2010-06-01T08:27:55Z
dc.date.issued2005-03en_ZA
dc.identifier.urihttp://hdl.handle.net/10019.1/1584
dc.descriptionThesis (MSc (Genetics))--University of Stellenbosch, 2005.
dc.description.abstractThe Russian wheat aphid, Diuraphis noxia (Mordvilko), is a serious insect pest of wheat and barley. It affects the quality and yield of grain by sucking plant sap from the newest growth whilst toxic substances are injected that destroy plant tissue. The Russian wheat aphid also acts as a vector of plant viruses. The cultivation of aphid resistant cultivars is the preferred control strategy and nine resistance genes, designated Dn1 to Dn9, have been identified. Another undesignated gene, Dnx, was found in the wheat accession PI220127. Mapping of the resistance genes relative to known markers will improve their use in breeding programs. The dominant RWA resistance gene, Dn5, was identified in the accession PI294994 and mapped to chromosome arm 7DL. However, recent reports have placed Dn5 on ...en_ZA
dc.format.extent3466754 bytesen_ZA
dc.format.mimetypeapplication/pdfen_ZA
dc.language.isoen
dc.publisherStellenbosch : University of Stellenbosch
dc.subjectDissertations -- Geneticsen
dc.subjectTheses -- Geneticsen
dc.subjectWheat -- Disease and pest resistanceen
dc.subjectWheat -- Genetic engineeringen
dc.subjectGene mappingen
dc.subjectRussian wheat aphid -- Biological controlen
dc.titleMapping of chromosome arm 7DL of Triticum aestivum L.en_ZA
dc.typeThesisen_ZA
dc.rights.holderUniversity of Stellenbosch


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