Invasive Species Compendium

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Abstract

Registration of 'Top 76-6' sweet sorghum.

Abstract

The Sorghum bicolor cultivar Top 76-6 (PI583832), released in 1994, was selected from the F2 progeny of the emasculated cross Mer. 60-2/Brandes using the pedigree method of breeding to advance the progeny. The parentage of the respective parental cultivars was PI154844/PI152967 and Collier 706-C/PI154844. Top 76-6 was highly resistant to Colletotrichum graminicola at Blairsville, Georgia. A 10-location disease evaluation conducted during the late 1970s and early 1980s in the US revealed good to intermediate (non-injurious) resistance to Cercospora sorghi, Gloeocercospora sorghi, Ascochyta sorghina, Pseudomonas andropogonis, Fusarium moniliforme [Gibberella fujikurio] and maize dwarf mosaic potyvirus. Sugar and syrup yields of Top 76-6 are similar to those of Dale but less than those of Bailey. In trials at Blairsville and Griffin, Georgia, conducted over 5 or 6 years, respectively, Top 76-6 showed excellent brix, adequate syrup yield and good juice extraction capability. Top 76-6 is adapted to the southeastern USA and is recommended for syrup production in the Appalachian Mountain range.