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ARS Home » Plains Area » Fargo, North Dakota » Edward T. Schafer Agricultural Research Center » Sugarbeet and Potato Research » Research » Publications at this Location » Publication #254523
Title: Registration of F1024 Sugarbeet Germplasm with Resistance to Sugarbeet Root Maggot

Author
item Campbell, Larry
item Panella, Leonard
item Smigocki, Anna

Submitted to: Journal of Plant Registrations
Publication Type: Germplasm Registration
Publication Acceptance Date: 10/15/2010
Publication Date: 5/2/2011
Citation: Campbell, L.G., Panella, L.W., Smigocki, A.C. 2011. Registration of F1024 sugarbeet germplasm with resistance to sugarbeet root maggot. Journal of Plant Registrations. 5(2):241-247.

Interpretive Summary: F1024 sugarbeet germplasm with resistance to sugarbeet root maggot was released by the USDA-ARS and the North Dakota Agricultural Experiment Station, North Dakota State University, Fargo, North Dakota on 15 December 2009. F1024 was selected from a population formed by crossing F1016, a root maggot resistant germplasm line, with a Cercospora leaf spot resistant breeding line. F1024 is the culmination of six cycles of selection for root maggot resistance. Under natural root maggot infestations, F1024 had a damage rating of 2.1 (0 = no maggot feeding to 9 = >75% of root surface with feeding scars), compared to an average of 6.1 for two susceptible commercial hybrids. In a 2009 Cercospora leaf spot evaluation, F1024 had a significantly lower disease rating than the susceptible check and the difference between F1024 and the resistant checks was not significant. Performance of testcross hybrids between the lines that constitute F1024 as the pollinators and a susceptible line provide insight into the potential of sugarbeet root maggot resistant hybrids in areas where root maggot is a incessant threat. Sugarbeet root maggot is a major insect pest of sugarbeet throughout much of North America and Cercospora leaf spot is a world-wide threat to sugarbeet.

Technical Abstract: F1024 (PI 658654) sugarbeet, Beta vulgaris L., germplasm with resistance to sugarbeet root maggot (Tetanops myopaeformis von Röder) was released by the USDA-ARS and the North Dakota Agricultural Experiment Station, North Dakota State University, Fargo, North Dakota on 15 December 2009. F1024 was selected from a population formed by crossing F1016, a root maggot resistant germplasm line, with a Cercospora leaf spot (caused by Cercospora beticola Sacc.) resistant breeding line. The population was subjected to three cycles of mass selection for root maggot resistance followed by three cycles of selection among half-sib families. Under natural root maggot infestations, F1024 had a damage rating of 2.1 (0 = no maggot feeding to 9 = >75% of root surface with feeding scars), compared to an average of 6.1 for two susceptible commercial hybrids. In a 2009 Cercospora leaf spot evaluation, F1024 had a significantly lower disease rating than the susceptible check and the difference between F1024 and the resistant checks was not significant. Performance of testcross hybrids between the component half-sib families of F1024 and a susceptible cms line provided additional validation of the potential of root maggot resistant hybrids in areas where root maggot is a perpetual threat.