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ARS Home » Southeast Area » Charleston, South Carolina » Vegetable Research » Research » Publications at this Location » Publication #290219
Title: Evaluation of dry-fleshed sweetpotato genotypes for resistance to soil insect pests, 2012

Author
item Jackson, D
item Harrison Jr, Howard

Submitted to: Arthropod Management Tests
Publication Type: Other
Publication Acceptance Date: 1/10/2013
Publication Date: 10/10/2013
Publication URL: http://www.entsoc.org/pubs/index.html
Citation: Jackson, D.M., Harrison Jr, H.F. 2013. Evaluation of dry-fleshed sweetpotato genotypes for resistance to soil insect pests, 2012. Arthropod Management Tests. Volume 38, Report No. M-5. Online Journal at http://www.entsoc.org/pubs/index.html.

Interpretive Summary:

Technical Abstract: An insect susceptible check cultivar (‘SC1149 19’), an insect resistant check cultivar (‘Ruddy’), 20 advanced dry-fleshed genotypes, and five dry-fleshed cultivars (‘Bonita’, ‘Liberty’, ‘NC Japanese’, ‘Picadito’, and ‘Sumor’) were evaluated for insect resistance in replicated field trials at Charleston, SC, 2012. All dry-fleshed entries except ‘Bonita’ and 06-312NC had significantly less overall injury from insects (i.e., higher percentage of undamaged roots), a significantly lower Wireworm, Diabrotica, Systena (WDS) index, and significantly less injury by sweetpotato weevils than did the susceptible control (‘SC1149-19’). All dry-fleshed entries except ‘Bonita’ had significantly less injury by flea beetles than did the susceptible control. Overall, 10 genotypes had overall insect injury levels that were not significantly different from the highly resistant check, ‘Ruddy’. Little white grub damage was observed for this experiment, and the genotype effects for this parameter were not significant in 2012.