Effects of Cultivar and Temperature During Grain Filling on Wheat Protein Content, Composition, and Dough Mixing Properties

Abstract

Three wheat cultivars, Bastian, Polkka, and Tjalve, were grown in growth chambers at 9, 12, 15, 18, and 21°C during grain filling in 1994, 1995, and 1996. The wheat samples were analyzed for protein content and sodium dodecyl sulfate (SDS) sedimentation volume. The mixing properties of sifted flours were determined by mixograph, and the flour protein composition was determined by size‐exclusion fast protein liquid chromatography (SE‐FPLC). The protein content, sedimentation volume, and mixogram parameters were affected by the temperature during grain filling. The protein content increased as the temperature increased. The sedimentation volumes and the mixograph data showed temperature effects that could not be explained by variation in protein content. The proportion of the polymeric flour proteins increased with increasing temperature. Positive correlations were found between the proportion of polymeric proteins and SDS sedimentation volume and, within each year, between the proportion of polymeric proteins and mixograph peak time. Negative correlations were found between the proportion of low molecular weight flour proteins (proportion of fraction IV) and sedimentation volume. The differences in these quality parameters among cultivars exceeded the effect of temperature during grain filling.

Study on malting barley genotypes under diverse Agroecologies of north western Ethiopia

“…This indicated genotype, environment and their interaction are important in governing the expression of these traits. It agrees with the finding that yield and quality traits are influenced by genotype (G), environment factors (E) and their interaction (Uhlen et al, 1998). The presence of variation between environments point out the presence of dissimilarity and provide a baseline information to categorize potential, low potential and intermediate yielding agro ecologies.…”

Durum wheat breeding in Mediterranean environments - influence of climatic<br>variables on quality traits

“…Other results (Miezan et al, 1977;Zhu and Khan, 2001) provide the evidence that interannual and multilocal variation on thousand-kernel weight and protein content are much more influenced by environmental conditions than by genotype. As presented in our findings, the protein content was positively associated with moderately high temperatures during grain filling (Figure 2) what was in accordance with results of Rao et al (1993) and Uhlen et al (1998). The maximum temperature, from 25ºC to 30 o C, that occurred in the first days of grain filling period during 2011, contribute to lower TKW and test weight reducing grain yield with implications on protein contents in accordance with Williams et al (1986), which reported that durum wheat protein content is inversely correlated with grain yield.…”

Effect of Genotype, Environment and Their Interaction on Quality Parameters of Wheat Breeding Lines of Diverse Grain Hardness

“…Similarly, many other studies demonstrated that environmental conditions have a larger effect on protein content than the genotype (e.g. Baenziger et al, 1985;Uhlen et al, 1998;Rharrabti et al, 2001;Mut et al, 2010). Protein quality, measured by alveograph W parameter, appeared to be influenced in a similar degree by genotype and environment.…”