T-Stór Subscription - Effect of Genotype and Environment on the Glycoalkaloid Content of Rare, Heritage, and Commercial Potato Varieties

Title: Effect of Genotype and Environment on the Glycoalkaloid Content of Rare, Heritage, and Commercial Potato Varieties
Authors: Valcarel, Jesus
Reilly, Kim
Gaffney, Michael
O'Brien, Nora
Keywords: α-Chaconine
Glycoalkaloids
Potato
α-Solanine
Solanum tuberosum L
Issue Date: 2-Apr-2014
Publisher: Wiley
Citation: Valcarcel, J., Reilly, K., Gaffney, M. and O'Brien, N. (2014), Effect of Genotype and Environment on the Glycoalkaloid Content of Rare, Heritage, and Commercial Potato Varieties. Journal of Food Science. doi: 10.1111/1750-3841.12443
Series/Report no.: Journal of Food Science;
Abstract: Potatoes accumulate toxic steroidal compounds that could be harmful for humans if consumed in high quantities and must be controlled. In this study, we were interested in assessing the levels and variation of glycoalkaloid content in 60 varieties of potato planted in 2 trial sites over 2 y. Total glycoalkaloid levels ranged from 4 to 957 mg/kg of dry weight in the flesh and from 150 to 8133 mg/kg in the skin, with the latter accumulating generally more α-chaconine than α-solanine. Contents in the flesh were below the safe limit for all varieties, but were generally above in the skin. Maximum values in each site and year of cultivation were found for varieties "Beauty of Hebron," "May Queen," and "Arran Pilot" in the skin and "Beauty of Hebron," "International Kidney," and "Congo" in the flesh. Year of cultivation had a significant effect on total glycoalkaloid content (P < 0.0001), with interactions between variety and site of cultivation and variety and year of cultivation also significant (P < 0.0001), implying that environmental effects seem to act differentially and could induce high levels in genetically predisposed varieties.
Description: peer-reviewed
URI: http://hdl.handle.net/11019/574
http://dx.doi.org/10.1111/1750-3841.12443
ISSN: 0022-1147
Appears in Collections: Horticulture

Source: Teagasc - T-Stór Subscription - Effect of Genotype and Environment on the Glycoalkaloid Content of Rare, Heritage, and Commercial Potato Varieties