Genetic variation for tuber mineral concentrations in accessions of the Commonwealth Potato Collection

Subramanian, Nithya and White, Phillip J. and Broadley, Martin R. and Ramsay, Gavin (2017) Genetic variation for tuber mineral concentrations in accessions of the Commonwealth Potato Collection. Genetic Resources and Crop Evolution . ISSN 1573-5109

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Abstract

The variation in tuber mineral concentrations amongst accessions of wild tuber-bearing Solanum species in the Commonwealth Potato Collection (CPC) was evaluated under greenhouse conditions. Selected CPC accessions, representing the eco-geographical distribution of wild potatoes, were grown to maturity in peat-based compost under controlled conditions. Tubers from five plants of each accession were harvested, bulked and their mineral composition analysed. Among the germplasm investigated, there was a greater range in tuber concentrations of some elements of nutritional significance to both plants and animals, such as (Ca, Fe and Zn; 6.7, 3.6, and 4.5-fold respectively) than others, such as (K, P and S; all <3-fold). Significant positive correlations were found between mean altitude of the species' range and tuber P, K, Cu and Mg concentrations. The amount of diversity observed in the CPC collection indicates the existence of wide differences in tuber mineral accumulation among different potato accessions. This might be useful in breeding for nutritional improvement of potato tubers.

Item Type: Article
Additional Information: The final publication is available at Springer via http://dx.doi.org/10.1007/s10722-016-0483-z
Keywords: Potato (Solanum tuberosum); Commonwealth Potato Collection (CPC); Tuber; minerals; ICP-MS; Biofortification; Altitude
Schools/Departments: University of Nottingham, UK > Faculty of Science > School of Biosciences > Division of Plant and Crop Sciences
Identification Number: https://doi.org/10.1007/s10722-016-0483-z
Depositing User: Eprints, Support
Date Deposited: 20 Jan 2017 13:59
Last Modified: 31 Jan 2017 02:10
URI: http://eprints.nottingham.ac.uk/id/eprint/39983

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