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Total foliar glycoalkaloids and resistance of wild potato species to Empoasca fabae (Harris)

Tipo de material: TextoTextoSeries ; American Potato Journal, 55(10), p.577-585, 1978Trabajos contenidos:
  • Tingey, Ward M
  • Mackenzie, J. David
  • Gregory, Peter
Tema(s): Recursos en línea: Resumen: Levels of total glycoalkaloids (TGA)in foliage of 10 wild, tuberbearing Solanum (Tourn.)L. species differentially resistant to infestation by the potato leafhopper, Empoasca fabae (Harris), were determined. Levels of TGA ranged from a high of 688 mg/100g fresh wt. in a resistant species, S. polyadenium Greenm. to a low of 13 mg/100g fresh wt. in a susceptible species, S. buibocastanum Dun. Foliar concentration of TGA and nymphal infestation by the potato leafhopper were highly correlated (r= -0.75, p = 0.01). The significant correlation of TGA levels and potato leafhopper resistance suggests that foliar TGA may be a significant factor in the defense of wild potato species against this pest.
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Levels of total glycoalkaloids (TGA)in foliage of 10 wild, tuberbearing Solanum (Tourn.)L. species differentially resistant to infestation by the potato leafhopper, Empoasca fabae (Harris), were determined. Levels of TGA ranged from a high of 688 mg/100g fresh wt. in a resistant species, S. polyadenium Greenm. to a low of 13 mg/100g fresh wt. in a susceptible species, S. buibocastanum Dun. Foliar concentration of TGA and nymphal infestation by the potato leafhopper were highly correlated (r= -0.75, p = 0.01). The significant correlation of TGA levels and potato leafhopper resistance suggests that foliar TGA may be a significant factor in the defense of wild potato species against this pest.

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