Variation of Free Asparagine Concentration and Association with Quality Parameters for Hard Red Spring Wheat Grown in North Dakota

Abstract

Cereal Chem. 94(4):712-716Free asparagine in wheat is known to be a precursor for the formation of acrylamide, which is unacceptable to consumers owing to its potential risks to human health. This research was performed to determine variation of free asparagine concentration (FAC) in hard red spring (HRS) wheat grown in North Dakota. Quality traits and FAC were analyzed for 75 HRS wheat genotypes grown at three locations. The ANOVA indicated that growing location had a strong effect on FAC. The main effect of genotype and interaction of genotype × location were also highly significant (P < 0.001).The genotype × location interaction was also explored graphically using a biplot of principal components calculated from the genotype and genotype × environment interaction model. The biplot analysis revealed that the pattern of interaction of genotype × location might be a noncrossover type. Certain HRS genotypes were identified to have consistently low FAC across growing locations. The FAC showed low genotypic correlations with quality traits, indicating low level of linkage between FAC and quality traits for HRS wheat genotypes. † Corresponding

Variation in asparagine concentration in Nebraska wheat

“…Thus, higher asparagine concentration was associated with delayed harvest and increased kernel size. Asparagine concentration was negatively correlated with grain volume weight in a previous study (Ohm et al, 2017). Future studies could explore the possible causal relationship between these variables with more genotypes.…”

“…In addition, asparagine concentration was correlated positively with plant height (Corol et al., ). Significant correlations between asparagine concentration and test weight, grain protein concentration, flour extraction, and bread loaf volume were also reported (Ohm et al., ).…”

“…There is very little information on asparagine concentration in wheat cultivars produced in the United States. A recent study on 75 hard red spring wheat genotypes that were grown in three locations in North Dakota reported wide variation in asparagine concentration (335–1,164 mg/kg) (Ohm, Mergoum, & Simsek, ). Growing environment, genotype, and the interaction between genotype and environment all affected asparagine concentration.…”

Effects of growing environment, genotype, and commercial fertilization levels on free asparagine concentration in Western Canadian wheat

“…Numerous research studies have been conducted worldwide on the free ASN concentration in wheat to investigate effective strategies for reducing free asparagine formation in wheat (Corol et al., 2016; Curtis et al., 2009; Malunga et al., 2019; Navrotskyi et al., 2018; Ohm et al., 2017). Selecting the correct wheat genotype, a suitable growing environment with sufficient precipitation and low heat stress, and a proper ratio of nitrogen and sulfur fertilization are three effective approaches to control free ASN concentration in wheat (Corol et al., 2016; Curtis et al., 2009; Granvogl et al., 2007; Malunga et al., 2019; Navrotskyi et al., 2018; Ohm et al., 2018; Stockmann et al., 2018; Yadav et al., 2019).…”

“…The study of factors affecting free ASN concentration in wheat commercially grown in North America is still very limited (Malunga et al., 2019, in press; Navrotskyi et al., 2018; Ohm et al., 2017; Wilson et al., 2020). Therefore, the objective of this study was to evaluate the variation of free ASN concentration in select Canadian wheat genotypes grown in different environments under commercially relevant fertilization treatments.…”