TY - JOUR
T1 - “Wild barley serves as a source for biofortification of barley grains”
AU - Wiegmann, Mathias
AU - Thomas, William T. B.
AU - Bull, Hazel J.
AU - Flavell, Andrew J.
AU - Zeyner, Annette
AU - Peiter, Edgar
AU - Pillen, Klaus
AU - Maurer, Andreas
PY - 2019/6
Y1 - 2019/6
N2 - The continuing growth of the human population creates an inevitable necessity for higher crop yields, which are mandatory for the supply with adequate amounts of food. However, increasing grain yield may lead to a reduction of grain quality, such as a decline in protein and mineral nutrient concentrations causing the so-called hidden hunger. To assess the interdependence between quantity and quality and to evaluate the biofortification potential of wild barley, we conducted field studies, examining the interplay between plant development, yield, and nutrient concentrations, using HEB-YIELD, a subset of the wild barley nested association mapping population HEB-25. A huge variation of nutrient concentration in grains was obtained, since we identified lines with a more than 50% higher grain protein, iron, and zinc concentration in comparison to the recurrent parent ‘Barke’. We observed a negative relationship between grain yield and nutritional value in barley, indicated by predominantly negative correlations between yield and nutrient concentrations. Analyzing the genetic control of nutrient concentration in mature grains indicated that numerous genomic regions determine the final nutritional value of grains and wild alleles were frequently associated with higher nutrient concentrations. The targeted introgression of wild barley alleles may enable biofortification in future barley breeding.
AB - The continuing growth of the human population creates an inevitable necessity for higher crop yields, which are mandatory for the supply with adequate amounts of food. However, increasing grain yield may lead to a reduction of grain quality, such as a decline in protein and mineral nutrient concentrations causing the so-called hidden hunger. To assess the interdependence between quantity and quality and to evaluate the biofortification potential of wild barley, we conducted field studies, examining the interplay between plant development, yield, and nutrient concentrations, using HEB-YIELD, a subset of the wild barley nested association mapping population HEB-25. A huge variation of nutrient concentration in grains was obtained, since we identified lines with a more than 50% higher grain protein, iron, and zinc concentration in comparison to the recurrent parent ‘Barke’. We observed a negative relationship between grain yield and nutritional value in barley, indicated by predominantly negative correlations between yield and nutrient concentrations. Analyzing the genetic control of nutrient concentration in mature grains indicated that numerous genomic regions determine the final nutritional value of grains and wild alleles were frequently associated with higher nutrient concentrations. The targeted introgression of wild barley alleles may enable biofortification in future barley breeding.
KW - Barley (Hordeum vulgare ssp. vulgare)
KW - Biodiversity
KW - Biofortification
KW - Grain nutrients
KW - Grain yield
KW - Wild barley (Hordeum vulgare ssp. spontaneum)
UR - http://www.scopus.com/inward/record.url?scp=85062833829&partnerID=8YFLogxK
U2 - 10.1016/j.plantsci.2018.12.030
DO - 10.1016/j.plantsci.2018.12.030
M3 - Article
C2 - 31128718
AN - SCOPUS:85062833829
VL - 283
SP - 83
EP - 94
JO - Plant Science
JF - Plant Science
SN - 0168-9452
ER -