Submitted to: Agronomy Abstracts
Publication Type: Abstract Only
Publication Acceptance Date: 8/15/2003
Publication Date: 11/1/2003
Citation: Divis, L.A., Graybosch, R.A., Baenziger, P.S., Martin, T.J., Beecher, B.S. 2003. The economic, yield and quality effects of a wheat streak mosaic virus (wsmv) resistance gene in winter wheat. Agronomy Abstracts. Interpretive Summary:
Technical Abstract: Nebraska-adapted wheat lines carrying the gene WSM-1, conditioning resistance to wheat streak mosaic virus, were used in this study. Sister-lines from six genetic populations were analyzed to compare agronomic and quality characteristics of resistant and susceptible lines in the absence of the virus, and under a naturally occurring viral infection. Seed composites from the same randomly selected lines across uninfected locations were used for quality analyses. Over all populations, there was no significant difference in yield, but resistant lines had significantly higher test weight in the uninfected locations. Within each population, significant differences in yield were observed only in population 1, while significant differences in test weight occurred in populations 1, 2, 5 and 6. At the infected location, resistant lines were significantly higher in yield in five of six populations. Over all populations, susceptible lines were significantly higher in loaf volume and percent water absorption, while flour protein content was significantly higher in two populations. The WSM-1 gene is beneficial when the virus is present, and there seems to be no yield detriment in the absence of the virus.