Abstract
Solanum tuberosum L. Gp. Tuberosum populations that had been improved for resistance to potato leafhopper,Empoasca fabae (Harris), by recurrent selection, were analyzed for tuber contents of the glycoalkaloids α-solanine and α-chaconine. The mean content of both glycoalkaloids was significantly higher in the more resistant populations compared with the unselected population. In a population generated from seven cycles of selection for resistance, the mean content of solanine + chaconine was 9.5 mg/100 g fresh weight compared with 4.0 mg/100 g in the original, unselected population; a 137% increase. Kennebec, in the same experiment, averaged 10.9 mg/100 g; Katahdin averaged 4.6 mg/100 g.
Compendio
Poblaciones deSolanum tuberosum L. Gp. mejoradas por selectión recurrente para la resistencia a la cigarrita de la papaEmpoasca fabae (Harris), fueron analizadas para determinar el contenido en los tubérculos de los glicoalcaloides α-solanina y α-chaconina. El contenido promedio de ambos glicoalcaloides fue significativamente mayor en las poblaciones más resistentes comparado con el de las poblaciones no seleccionadas. En una población generada a partir de siete ciclos de selección para la resistencia, el contenido promedio de solanina más chaconina fue de 9,5 mg/100 g de peso fresco, comparado con 4,0 mg/100 g en la población original no seleccionada, es ducir un incremento de 137%. El contenido promedio de solanina más chaconina de la variedad Kennebec, en el mismo experimento, fue de 10.9 mg/100 g y el de Katahdin fue de 4.6 mg/100 g.
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Sanford, L.L., Deahl, K.L., Sinden, S.L. et al. Glycoalkaloid contents in tubers fromSolanum tuberosum populations selected for potato leafhopper resistance. American Potato Journal 69, 693–703 (1992). https://doi.org/10.1007/BF02853813
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DOI: https://doi.org/10.1007/BF02853813