|McGrath, J Mitchell|
|Theurer, J - RETIRED ARS EMPLOYEE|
Submitted to: Germplasm Release
Publication Type: Germplasm Release
Publication Acceptance Date: November 2, 2002
Publication Date: N/A
Interpretive Summary: This is a germplasm release. No interpretive summary required.
Technical Abstract: Sugarbeet germplasm SR96 and SR97 are being released to industry for use in creating sugarbeet hybrids with smooth-root (SR), low soil tare characteristics. Low soil tare reduces industry costs by reducing the amount of harvested soil and the attendant soil disposal costs and reducing the spread of soil borne diseases. Previous SR releases have shown one to five percentage points lower sucrose concentrations than SR96 and SR97. Both SR96 and SR97 are diploid and multigerm and each was simultaneously selected for smooth-root and high sucrose over a number of generations. SR96 and SR97 each have similar sucrose percentages, but were derived from different high sucrose source populations combined with smooth-root donor SP85700. SR96 is an F6 population from an initial cross of SP85700 with a high sucrose commercial breeding line. SR97 was selected over four generations from a composite population whose parents included SP85700, L19, L53, and US35. Both SR96 and SR97 are expected to be used in developing sugarbeet hybrids with economically recoverable sucrose levels with smooth-root, low soil tare characteristics.