Rheological and Biochemical Properties of Meal from Winter Triticale Varieties in Connection with the Resistance to Preharvest Germination

Abstract

The analysis of biochemical properties (protein, starch and starch fractions, lipids, phenol combinations) and their correlations with caryopsis germination under the influence of abiotic factors (temperature, moisture, light) has shown that germination is mainly correlated with protein contents, lipid properties, and starch fractional composition. The analysis of rheograms using a permitted the identification of microviscosimeter, which was developed in BelNIIZK, the most informative characters: rheogram height - H (mm); the time the curve comes to a peak position - t (s); the area of the triangle inscribed in the rheogram - S (mm²); and rheogram height in 60 s after coming to a peak position - H 60s (mm). The definition of amylolytic activity in 50 triticale varieties and lines using the Hagberg-Perten method as well as the viscosimeter has shown the reliability of the results obtained on the basis of these methods (r=0.917).

The evaluation of rheological and biochemical meal properties reveal correlations relations between them and resistance to preharvesting germination (PG), thus making it possible to reliably predict the reaction of a genotype to the environment.

The suggested rheological and biochemical characters are suitable for mass evaluation of resistance of genotypes to PG in the early stages of the breeding process.