Effects of growing location and variety on free tryptophan and mineral nutrient content in wheat

Lundegaardh, B., Swedish Univ. of Agricultural Sciences, Upsala . Centre for Sustainable Agriculture; Jastrebova, J., Swedish Univ. of Agricultural Sciences, Upsala . Dept. of Food Science; Zhokhov, S., Swedish University of Agricultural Sciences, Upsala . Dept. of Chemistry; Maartensson, A., Swedish Univ. of Agricultural Sciences, Upsala . Dept. of Soil and Environment; Oeborn, I., Swedish Univ. of Agricultural Sciences, Upsala . Dept. of Plant Production Ecology

Effects of growing location and variety on free tryptophan and mineral nutrient content in wheat

2009

Lundegaardh, B., Swedish Univ. of Agricultural Sciences, Upsala (Sweden). Centre for Sustainable Agriculture | Jastrebova, J., Swedish Univ. of Agricultural Sciences, Upsala (Sweden). Dept. of Food Science | Zhokhov, S., Swedish University of Agricultural Sciences, Upsala (Sweden). Dept. of Chemistry | Maartensson, A., Swedish Univ. of Agricultural Sciences, Upsala (Sweden). Dept. of Soil and Environment | Oeborn, I., Swedish Univ. of Agricultural Sciences, Upsala (Sweden). Dept. of Plant Production Ecology

Tryptophan (Trp) is an essential amino acid for mammals since they cannot synthesise it. Wheat (Triticum aestivum L.) is a major source of dietary Trp, and wheat high in Trp would thus be very beneficial. This study investigated the impact of location and wheat variety on the content of free Trp and mineral nutrients in wheat grain. Four wheat cultivars from national variety tests on wheat with varying protein contents were selected from seven different locations of Sweden representing different climatic zones and soil contents of trace elements. Grain was analysed for Trp content using reversed phase HPLC. Mineral nutrients were analysed using inductively coupled plasma emission spectrometry. Wheat yield and grain content of nutrients and Trp differed significantly between sites. High N content in grain was correlated with a high content of Cu, Fe and S, and also Ca and Mg. However, it was correlated with a low content of K and Na. Trp content was positively correlated with Na and Zn content and negatively correlated with K/Na and K/(Na+Zn) ratio. The varieties differed in Trp content and the two ratios, but there were no significant differences in yields between the varieties at any location. The results indicated salt stress induction of Trp synthesis, which may protect wheat against salt stress and yield losses.

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Mots clés AGROVOC

amino acids calidad chemicophysical properties climatic factors contenido de materia seca contenido mineral contenido proteico crop losses crop yield dry matter content facteur climatique grain granos hplc latvia letonia lettonie metabolites metabolitos mineral content mineral nutrients nutrientes minerales osmotic stress protein content quality recherche rendement des cultures rendimiento de cultivos research site factors stress osmotique suecia sweden trigo triptofano triticum aestivum tryptophan tryptophane variedades varieties wheats

Informations bibliographiques

Publié dans

Research for Rural Development. International Scientific Conference Proceedings (Latvia)

Numéro 15/2009 ISSN 1691-4031

Editeur

LLU

Pagination

p. 21-27

D'autres materias

Teneur en proteines; Teneur en matiere seche; Caracteristicas del sitio; Qualite; Ble; Acide amine; Perte de recolte; Suede; Facteur lie au site; Perdidas de la cosecha; Aminoacidos; Teneur en elements mineraux; Factores climaticos; Propriete physicochimique; Metabolite; Estres osmotico; Substance nutritive minerale; Variete; Propiedades fisicoquimicas; Investigacion

Langue

anglais

Note

Summary (En)

Creator variant: Lundegårdh, B., Mårtensson, A., Öborn, I.

2 tables, 2 fig., 30 ref.

Type

Conference; Summary

Source

Research for Rural Development 2009. Annual 15th International Scientific Conference Proceedings, Gaile, Z..- Jelgava (Latvia): LLU, 2009. International Scientific Conference: Research for Rural Development 2009, 15, Jelgava (Latvia), 20-22 May 2009.- p. 21-27

Conférence

International Scientific Conference: Research for Rural Development 2009, 15, Jelgava (Latvia), 20-22 May 2009

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Liens

http://www.llu.lv/getfile.php?id=30353

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