Using Rheological Phenotype Phases to Predict Rheological Features of Wheat Hardness and Milling Potential of Durum Wheat

Abstract

Cereal Chem. 93(4):369-376Predictions about milling, dough making, and baking properties can be made by measuring properties of the wheat grain with different small-and medium-scale equipment. In this study, rheological hardness index (RHI) was shown to separate hexaploid wheats and durums into clearly distinct hardness classes. Earlier work demonstrated the utility of RHI to give new insight about the classification of wheat types, and in this study further use of the rheological phenotype phases (RPPs) to construct combinations of RPPs (cRPPs) is explored. In particular, it is shown how different cRPPs can be used to compare, for various wheat varieties, the elastic, fragmentation, equilibrium, and viscoelastic phases of an average crush response profile. In addition, relationships were obtained, based on selected RPPs from the single-kernel characterization system, that gave good predictions of the laboratory milling potential of durum wheats. This information could be used as an early generation test to predict milling yield in breeding programs without having to mill the sample. Further validation of these relationships is required by evaluating the prediction across multiple environments. † Corresponding

Relationship between Seed Morphological Traits and Ash and Mineral Distribution along the Kernel Using Debranning in Durum Wheats from Different Geographic Sites

“…These studies developed multiple regression models based on kernel characteristics (i.e., length of minor and major axes, perimeter, area, and ellipsoidal volume) for the prediction of milling quality of durum wheat without conducting actual milling. In a recent study performed by Haraszi et al [ 12 ], a model based on results of the single-kernel characterization system accounted for 65% of the variance in total milling yield of durum wheat. Unfortunately, the kernel traits used by the model could be susceptible to environmental variation and further validation with wheat samples grown at different locations and in different crop years is necessary.…”

Developing a high‐throughput micromilling protocol for evaluating durum wheat milling performance and semolina quality

“…However, only 35% of the variation in semolina yield was explained by ellipsoidal volume in combination with test weight or 1,000‐kernel weight. In a recent study conducted by Haraszi et al (), a model based on results of the single‐kernel characterization system accounted for 65% of the variance in total milling yield of durum wheat. However, the seven terms used by the model could be susceptible to environmental variation and further validation with wheat samples grown at different locations and in different crop years is necessary.…”

Grain quality of tetraploid wheat Triticum timopheevii (Zhuk.) Zhuk.

“…Using Szabó et al's data [49], we obtain a similar result. This means that T.timopheevii is likely to belong to hard wheats according to Haraszi et al's classification [50,51].…”