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ARS Home » Southeast Area » Charleston, South Carolina » Vegetable Research » Research » Publications at this Location » Publication #89224
Title: INFLUENCE OF SWEETPOTATO RESIN GLYCOSIDES ON THE LIFECYCLE OF THE DIAMONDBACK MOTH

Author
item Peterson, Joseph
item Jackson, D

Submitted to: HortScience
Publication Type: Abstract Only
Publication Acceptance Date: 2/1/1998
Publication Date: N/A
Citation: N/A

Interpretive Summary:

Technical Abstract: Resin glycosides extracted from sweetpotato skins, were bioassayed for their effects on survival, development and fecundity of diamondback moths, Plutella xylostella (L.). Glycosides were incorporated into an artificial diet (Bio-Serv, Inc.) and fed to diamondback larvae. Neonatals were individually fed artificial diet with 0.00, 0.25, 0.50, 1.00, 1.50, and 2.00 mg per ml. There were highly significant negative correlations between glycoside levels and survival as well as weight of survivors after 6 days. A significant positive relationship existed between dosages and development time. Lifetime fecundity was negatively affected at sublethal doses. The glycosides are viewed as contributors to resistance to the wireworm, Diabrotica and Systena insect complex.