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dc.coverage.spatialE. E. Santa Catalinaes_ES
dc.creatorChicaiza N., Oswaldo-
dc.date.accessioned2015-05-11T17:16:14Z-
dc.date.available2015-05-11T17:16:14Z-
dc.date.issued1981-
dc.identifier.other*EC-INIAP-BEESC-MGC. Quito (T/Ch532e)-
dc.identifier.urihttp://repositorio.iniap.gob.ec/jspui/handle/41000/165-
dc.description.abstractThe effectiveness of the visual symptom score in selecting germplasm for resistance to barley yellow dwarf (BYD) was studied using 33 F5 wheat (Triticum aestivum L.) lines from crosses between tolerant x tolerant and tolerant x susceptible parents (experiment 1) , and 28 advanced lines (experiment 2) . In both cases the material had been selected on the basis of low visual symptom scores for 2 to 5 years. Replicated paired Hill-plots were stablished in the field at Davis, California. One of the paired plots of each genotype was sprayed with insecticide to reduce the aphid population. Each hill-plot was scored for BYD symptom expression using a visual 0 to 9 scale. Data were collected for plant height, biomass weight, grain yield, spike number/hill-plot, number of kernels/hillplot, number of kernels/spike, and 2 00-kernel weight were collected in both experiments to examine the relationships with the BYD symptom score.es_ES
dc.format.extent3 p.es_ES
dc.language.isoenes_ES
dc.publisherCalifornia: University of California, 1999. 57 p.es_ES
dc.subjectTRIGOes_ES
dc.subjectTRITICUMes_ES
dc.subjectENANISMO AMARILLOes_ES
dc.subjectVIRUSes_ES
dc.subjectENFERMEDADES DE LAS PLANTASes_ES
dc.subjectRESISTENCIA A LA ENFERMEDADes_ES
dc.subjectFITOPATOLOGÍAes_ES
dc.titleEffectiveness of the visual symptom score in selecting germplasm for resistance to the barley yellow dwarf virus disease in wheat (Triticum aestivum L.)es_ES
dc.typeTesises_ES
dcterms.bibliographicCitationChicaiza N., O. (1999). Effectiveness of the visual symptom score in selecting germplasm for resistance to the barley yellow dwarf virus disease in wheat (Triticum aestivum L.). (Tesis de Maestría). University of California, California.-
dc.subject.academicMAG. SC. THESIS-
Aparece en las colecciones: Tesis EESC

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