Abstract
The patterns of sugar accumulation in Onaway, Norchip and ND860-2 potato tubers were determined during storage at 9°C in air, and at 3°C in air and in modified atmospheres of 1000 ppm ethylene in air and 3% oxygen. Storage at 9°C was associated with essentially no sugar accumulation for all tubers evaluated. the accumulation of hexose (glucose and fructose) during 3°C storage temporally followed an increase in sucrose. the 1000 ppm ethylene atmosphere caused higher levels of sucrose to accumulate in Onaway and Norchip tubers, but delayed hexose accumulation in these tubers compared to storage in air. Storage at 3°C in low oxygen delayed, reduced and had no effect on sucrose accumulation in Onaway, ND860-2 and Norchip tubers, respectively, compared to storage in air. However, marked reductions in hexose accumulation were observed in ND860-2 and Norchip tubers stored at 3°C in low oxygen.
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