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United States Department of Agriculture

Agricultural Research Service

Title: Registration of Sugarbeet Germplasm Lines C67/2, C69/2, C78/3, and C80/2 with Resistance to Virus Yellows and Rhizomania

item Lewellen, Robert

Submitted to: Crop Science
Publication Type: Germplasm Release
Publication Acceptance Date: June 30, 2003
Publication Date: January 20, 2004
Citation: Lewellen, R.T. 2004. Registration of sugarbeet germplasm lines c67/2, c69/2, c78/3, and c80/2 with resistance to virus yellows and rhizomania. Crop Science. 2004. v. 44. p. 358-359.

Interpretive Summary: Breeding for resistance to the virus yellows complex in sugarbeet has been a long term objective. Known resistance is multigenic and additive and shows low heritability. Finding, accumulating, and transferring resistance has been a slow, difficult process. In unselected or unimproved sugarbeet, virus yellows causes about 2% loss per week of growth so crops infected in May typically lose up to 40% of their potential yield by fall harvest. Losses due to virus yellows in these germplasm lines has been reduced to about 0.5% per week of infection. Germplasm lines C67/2, C69/2, C78/3, and C80/2 encompass much of the virus yellows resistant breeding material in combination with resistance to rhizomania, curly top virus, and Erwinia soft rot.

Technical Abstract: N/A.

Last Modified: 4/22/2015
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