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A comparison of microtubers and field-grown tubers of potato (Solanum tuberosum L.) for hexoses, sucrose and their ratios following postharvest cold storage
- Source :
-
Postharvest Biology & Technology . Jul2008, Vol. 49 Issue 1, p180-184. 5p. - Publication Year :
- 2008
-
Abstract
- Abstract: Cold-induced sweetening (CIS) is a significant postharvest problem in processing potato (Solanum tuberosum L.) tubers. A rise in hexose sugar levels during cold storage results in a brown, bitter tasting and unmarketable product. We tested if potato microtubers (MicroT) can undergo CIS and if this corresponds to the CIS response in field-grown tubers (FieldT) with the hope of fast-tracking breeding programmes using a MicroT system. Using MicroT from potato genotypes representing a range of CIS response levels we have demonstrated that MicroT undergo CIS more rapidly than FieldT. Correlations of glucose:sucrose and hexose:sucrose ratios were highly significant between the two tuber types after cold treatment and these ratios are known to be good predictors of invertase activity, a key regulator of CIS. Correlations of individual sugars were non-significant before and after postharvest cold treatment. [Copyright &y& Elsevier]
- Subjects :
- *HARVESTING
*POTATOES
*SUCROSE
*SUGAR
*GLUCOSE
Subjects
Details
- Language :
- English
- ISSN :
- 09255214
- Volume :
- 49
- Issue :
- 1
- Database :
- Academic Search Index
- Journal :
- Postharvest Biology & Technology
- Publication Type :
- Academic Journal
- Accession number :
- 31559697
- Full Text :
- https://doi.org/10.1016/j.postharvbio.2007.11.005