Natural variation of sucrose, glucose and fructose contents in Colombian genotypes of Solanum tuberosum Group Phureja at harvest
BACKGROUND Potato frying quality is a complex trait influenced by sugar content in tubers. Good frying quality requires low content of reducing sugars to avoid the formation of dark pigments. Solanum tuberosum Group Phureja is a valuable genetic resource for breeding and for genetic studies. The sug...
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Published in | Journal of the science of food and agriculture Vol. 96; no. 12; pp. 4288 - 4294 |
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Main Authors | , , , , , , , |
Format | Journal Article |
Language | English |
Published |
Chichester, UK
John Wiley & Sons, Ltd
01.09.2016
John Wiley and Sons, Limited |
Subjects | |
Online Access | Get full text |
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Summary: | BACKGROUND
Potato frying quality is a complex trait influenced by sugar content in tubers. Good frying quality requires low content of reducing sugars to avoid the formation of dark pigments. Solanum tuberosum Group Phureja is a valuable genetic resource for breeding and for genetic studies. The sugar content after harvest was analyzed in a germplasm collection of Group Phureja to contribute to the understanding of the natural variation of this trait.
RESULTS
Sucrose, glucose and fructose genotypic mean values ranged from 6.39 to 29.48 g kg−1 tuber dry weight (DW), from 0.46 to 28.04 g kg−1 tuber DW and from 0.29 to 27.23 g kg−1 tuber DW, respectively. Glucose/fructose and sucrose/reducing sugars ratios ranged from 1.01 to 6.67 mol mol−1 and from 0.15 to 7.78 mol mol−1, respectively. Five clusters of genotypes were recognized, three of them with few genotypes and extreme phenotypic values.
CONCLUSION
Sugar content showed a wide variation, representing the available variability useful for potato breeding. The results provide a quantitative approach to analyze the frying quality trait and are consistent with frying color. The analyzed germplasm presents extreme phenotypes, which will contribute to the understanding of the genetic basis of this trait. © 2016 The Authors. Journal of The Science of Food and Agriculture published by John Wiley & Sons Ltd on behalf of Society of Chemical Industry. |
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Bibliography: | Canadian International Food Security Research Fund (CIFSRF) International Development Research Centre (IDRC) istex:720D9C086D6A0C01115FCDFE6A86A738001C2F38 Department of Foreign Affairs, Trade, and Development (DFATD), Canada Improving Potato Production for Increasing Food Security of Indigenous Communities in Colombia Dendrogram from a factor-based hierarchical cluster analysis using the nearest neighbor method showing 108 genotypes from CCC (accessions from the Colombian Central Collection that constitute the Working Collection from the Potato Breeding program at the National University of Colombia) and four commercial cultivars of Solanum tuberosum Group Phureja. The red line indicates the level of partition that displays five groups with biological relevance. The group numbers correspond to those given in Figure .Magnitude of the vectors, showing the degree of representation of the variables in the principal component analysis. Values closer to 1.00 indicated a better representation of the variable in the biplotRanges of chip darkening percentage corresponding to each color degree of the International Potato Center frying scale adapted from Ñústez-López. The images shown are from Solanum tuberosum Group Phureja.Average content of sugars and average glucose/fructose and sucrose/reducing sugars ratios from accessions of CCCa (108 genotypes) and four commercial cultivars from Solanum tuberosum Group Phureja. The genotypic group from the cluster analysis is also shown for each genotype. ark:/67375/WNG-Q6LFJ1C4-Z ArticleID:JSFA7783 ObjectType-Article-1 SourceType-Scholarly Journals-1 ObjectType-Feature-2 content type line 23 Correction added on 06 July 2016, after first online publication: Supplementary Table S1 was missing. This file is now available online. Present address INRES‐Plant Breeding, University of Bonn, Bonn, Germany |
ISSN: | 0022-5142 1097-0010 |
DOI: | 10.1002/jsfa.7783 |