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Title: Resistance of national sweetpotato collaborator's group genotypes to soil insect pests, Charleston, SC, 2013

Author
item Jackson, D

Submitted to: National Sweetpotato Collaborators Group Progress Report
Publication Type: Other
Publication Acceptance Date: 1/31/2014
Publication Date: 1/31/2014
Citation: Jackson, D.M. 2014. Resistance of national sweetpotato collaborator's group genotypes to soil insect pests, Charleston, SC, 2013. Pages 62-63 In S. Meyers (ed), National Sweetpotato Collaborators Group Progress Report.

Interpretive Summary: N/A

Technical Abstract: Three insect susceptible sweetpotato cultivars (‘Beauregard’ [B63 & B94-14] and 'SC1149 19'), an insect-resistant sweetpotato cultivar (‘Ruddy’), and eight regional sweetpotato genotypes from the 2013 National Sweetpotato Collaborator Trials were evaluated for insect resistance in replicated field trials at Charleston, SC. Two entries (‘Ruddy‘ and L07-146) had significantly less overall insect damage (ie., higher percentage of undamaged roots) than did the susceptible checks (B94-14 and SC1149-19). Four entries had a lower WDS index (Wireworm, Diabrotica, Systena) than the susceptible checks. Overall, the highest level of resistance was for the resistant check cultivar ‘Ruddy’, which had over 95% uninjured roots. Nine genotypes had significantly less damage by flea beetles and all entries had significantly less weevil damage than did ‘SC1149-19’. Root injury from white grubs was very light and data were not significant for 2013.