Variability and Site Dependence of Grain Mineral Contents in Tetraploid Wheats

Abstract

Crop production and natural resource use, especially in developing countries, representsone of the most important food sources for humans. In particular, two wheat species (tetraploid, whichis mostly used for pasta and hexaploid, which is primarily used for bread) account for about 20%of the whole calories consumed worldwide. In order to assess the mineral accumulation capabilityof some popular tetraploid wheat genotypes, a metabolomic (metallomic) approach was used inthis study. The metallomic profile related to micro- (Zn, Fe, Cu, Mn, Ni and Cr), macro- (Ca, Mgand K) and toxic trace elements (Cd and Pb) was obtained by ICP-AES analysis in a large set oftetraploid wheat genotypes (Triticum turgidum L.) that were grown in two different experimental fields.Correlations and multivariate statistical analyses were performed, grouping the samples under twowheat sets, comprising cultivated durum cultivars (T. turgidum subsp. durum) and wild accessions(T. turgidum subsp. dicoccum and subsp. dicoccoides). The site dependence ranking for the selectedgenotypes with the highest nutrient accumulation was obtained. The significantly higher content ofMg (among the macronutrients) and the highest levels of Mn, Fe and Zn (among the micronutrients)were found for wild accessions with respect to durum cultivars. Moreover, the former genotypeswere also the ones with the lowest level of accumulation of the trace toxic elements, in particularCd. According to the performed statistical analyses, the wild accessions appeared also to be lessinfluenced by the different environmental conditions. This is in accord with literature data, indicatingthe superiority of "old" with respect to modern wheat cultivars for mineral content. Although furtherstudies are required on a wider range of genotypes to confirm these findings, the obtained resultscould be used to better select the less demanding and better performing cultivars in specific targetwheat growing environments.


Autore Pugliese

Tutti gli autori

  • L. Del Coco; B. Laddomada; D. Migoni; Gi. Mita; R. Simeone; Francesco P. Fanizzi

Titolo volume/Rivista

Sustainability


Anno di pubblicazione

2019

ISSN

2071-1050

ISBN

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Numero di citazioni Wos

Nessuna citazione

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Numero di citazioni Scopus

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Settori ERC

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Codici ASJC

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