Historical shifts in the seed mineral micronutrient concentration of US hard red winter wheat germplasm

By D. Garvin, Ross M. Welch, J. Finley. 2006

264 citations recorded by the source corpus.

The yield of wheat (Triticum aestivum L. em. Thell) has greatly improved through breeding, but it is not known how this has affected seed micronutrient content. In the present study, the iron (Fe), zinc (Zn), copper (Cu), and selenium (Se) content of seed of 14 US hard red winter wheat varieties from production eras spanning more than a century was measured. The seed that was analyzed was obtained from a replicated field trial conducted at two locations in Kansas. The Fe, Zn, and Cu content was obtained by inductively coupled plasma emission spectroscopy (ICPES) and Se content was obtained by hydride-generated atomic absorption spectrometry (HG-AAS). Significant effects of location on micronutrient content of seed were observed. Similarly, depending on the micronutrient, significant differences in seed micronutrient content between varieties were detected at one or both locations. A significant negative regression of seed Zn content on both yield and variety release date was observed at both locations, while seed Fe content exhibited a significant negative regression on yield and variety release date at one location. Regression of seed Se content on variety release date was significant and negative at one location. These results suggest that genetic gains in the yield of US hard red winter wheat have tended to reduce seed Fe, Zn, and Se concentrations. However, the extent to which this effect manifests itself is influenced by environmental effects. Published in 2006 by John Wiley & Sons, Ltd

Subfields: Nutrition and Dietetics, Plant Science, Pollution

View Paper: https://www.semanticscholar.org/paper/2d75beeac9cfe8501b9a0c7319ec3e2de6723de2

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Citations in the corpus

Agronomic biofortification of cereals with zinc: a review (2018, background): “These large increases in yield, however, have caused considerable decreases in the concentrations of essential nutrients such as Zn because of the so-called ‘dilution effect’ (Garvin et al., 2006; Fan et al., 2008; Davis, 2009; Shewry et al., 2016).”
Biofortification of crops with seven mineral elements often lacking in human diets--iron, zinc, copper, calcium, magnesium, selenium and iodine. (2009, background): “Genetic variation in grain Se has also been reported for wheat (Lyons et al., 2005; Garvin et al., 2006) and oat (Avena sativa; Eurola et al., 2004), although the expression of this trait is strongly dependent upon weather conditions, crop husbandry and selenium fertilization (Eurola et al., 2004;…”
Fortification of micronutrients for efficient agronomic production: a review (2016, background): “…biomass) often accompanying NPK application to high-yielding crop varieties would cause a dilution of the micronutrient concentrations in the aerial plant parts, thus reducing the amount ultimately translocated to edible portions of the crop, especially grains (Garvin et al. 2006; Fan et al. 2008).”
Declining Fruit and Vegetable Nutrient Composition: What Is the Evidence? (2009, background): “Wheat is the second reported food in which cultivars of varying yield were grown side by side and measured for their nutrient contents (Garvin et al., 2002, 2006; Monasterio and Graham, 2000).”
Relationship between yield and mineral nutrient concentrations in historical and modern spring wheat cultivars (2008, background): “Genetic gains in grain yield of US hard red winter wheat cultivars may be related to reduced Fe, Zn, and Se concentrations (Garvin et al. 2006).”
Soil and crop management strategies to prevent iron deficiency in crops (2011, background): “There was a significant negative relationship between yields and grain-Fe concentrations ( Garvin et al. 2006 ).”
Relationships Between Yield and Mineral Concentrations in Potato Tubers (2009, background): “Similarly, in a study of 14 U.S. hard red winter wheat varieties grown together at two locations, Garvin et al. (2006) observed negative relationships between seed Fe, Zn, and Se concentrations and both grain yields and date of release, although the extent to which this effect manifested itself was…”
Grain zinc, iron and protein concentrations and zinc-efficiency in wild emmer wheat under contrasting irrigation regimes (2008, background): “A negative association between grain mineral concentrations and yield in cultivated wheat was previously reported (Ortiz-Monasterio et al. 1997; Feil 1997; Calderini and Ortiz-Monasterio 2003; Garvin et al. 2006).”