Author
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Campbell, Larry |
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Submitted to: Journal of Sugar Beet Research
Publication Type: Peer Reviewed Journal Publication Acceptance Date: 7/13/2017 Publication Date: 10/10/2017 Citation: Campbell, L.G. 2017. Sugarbeet root maggot from a red globe-shaped beet (PI 179180). Journal of Sugar Beet Research. 54(1-2):50-59. Interpretive Summary: Sugarbeet root maggot is a major insect pest of sugarbeet in many North American production areas. Chemical insecticides have been the primary control method. Host-plant resistance that provides consistent reliable control would provide both an economical and an environmentally favorable alternative to the chemical insecticides. This report describes a maggot resistant germplasm line, F1043, that is not related to previously released resistant germplasm lines. F1043 was selected from a cross between a root maggot susceptible sugarbeet germplasm line and PI 179180, a maggot resistant accession with red globe-shaped roots that was originally collected in Turkey. Differences in root maggot damage ratings between F1043 and previously released resistant lines were small. The three-year average sucrose concentration of F1043 in the absence of maggot damage was 1.2 %1 less than the sucrose concentration of an adapted hybrid. Technical Abstract: Sugarbeet root maggot (Tetanops myopaeformis) is a major insect pest of sugarbeet (Beta vulgaris) in many North American production areas. Chemical insecticides have been the primary control method. Host-plant resistance that provides consistent reliable control would provide both an economical and an environmentally favorable alternative to the chemical insecticides. This report describes a maggot resistant germplasm line, F1043, that is not related to previously released resistant germplasm lines. F1043 was selected from a cross between a root maggot susceptible sugarbeet germplasm line and PI 179180, a maggot resistant accession with red globe-shaped roots that was originally collected in Turkey. Differences in root maggot damage ratings between F1043 and two previously released resistant lines, F1016 and F1024, were small. The three-year average sucrose concentration of F1043 in the absence of maggot damage was 12 g kg-1 less than the sucrose concentration of an adapted hybrid. The average root yield of F1043 was 80% of the root yield of F1016. In all comparisons between F1043 and F1024, F1024 had lower Cercosproa leaf spot severity ratings than F1043. There is no indication that F1043 would contribute resistance to Rhizomania or Curly Top virus when used to introduce maggot resistance into elite populations or parental lines. |
