Location: Vegetable Research
Title: Evaluation of Regional Sweetpotato Genotypes for Resistance to Soil Insect Pests, 2009 Author
Submitted to: Arthropod Management Tests
Publication Type: Other
Publication Acceptance Date: January 1, 2010
Publication Date: September 27, 2010
Citation: Jackson, D.M. 2010. Evaluation of Regional Sweetpotato Genotypes for Resistance to Soil Insect Pests, 2009. Arthropod Management Tests, Volume 35, Report No. M7, Online Journal at http://www.entsoc.org/pubs/index.html. Technical Abstract: Three insect susceptible cultivars (‘Beauregard’ [B63], 'Beauregard' [B94-14], and 'SC 1149-19'), two insect-resistant cultivars ('Charleston Scarlet' and ‘Ruddy’), and 7 regional genotypes from the 2009 National Sweetpotato Collaborator Trials were evaluated for insect resistance in replicated field trials at Charleston, SC. Overall, the highest levels of resistance were for the resistant check cultivars ‘Ruddy’ and ‘Charleston Scarlet’. Five entries had significantly less overall insect damage (ie., higher percentage of undamaged roots) than did the three susceptible checks (B-63, B94-14, and SC1149-19). These same five sweetpotato entries had a significantly lower WDS index (Wireworm, Diabrotica, Systena) rating than ‘SC1149 19’. All genotypes had significantly less damage by flea beetles and sweetpotato weevils than did ‘SC1149-19’.