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The main objective of this study was to determine the effect of cultivation technologies (extensive vs. high-input) on correlations between wheat grain quality parameters, such as falling number value, wet gluten content and grain hardness, and the content of phenolic compounds, such as total free phenolic compounds and alkylresorcinols. ąIt was found high values of correlation coefficient between falling number value and wet gluten, and among analysed groups of polyphenols. Grain hardness was associated with content of wet gluten and falling number values. Additional significant correlations were observed inside each cultivar. Determined technological value indices (falling number value, wet gluten content and grain hardness) were primarily dependent on the cultivation technology, whereas the contents of the phenolic compounds and alkylresorcinols were mostly related to the wheat genotype.
Chemical composition of common wheat – Triticum aestivum ssp. vulgare Vill. Host., hard wheat – Triticum durum Desf., and spelt – Triticum aestivum ssp. spelta (L.) Thell grains was investigated. Total protein, wet gluten, fiber, ash, carbohydrates, falling number, macronutrients (phosphorus, potassium, calcium, magnesium), and microelements (copper, iron, manganese, zinc) were determined. Also standard deviation, variability and correlation coefficients were calculated. Hard wheat and spelt lines were characterized by much higher contents of total protein, wet gluten, and falling number value than common wheat; however, the highest protein concentration and falling number was recorded in grains of hard wheat. Common wheat was distinguished by low ash content and the highest carbohydrates level. Higher percentage of macronutrients and microelements in grains of spelt and hard wheat, as compared to common wheat, confirms the usefulness of these species for foodstuff production. Among the qualitative traits studied, content of carbohydrates appeared to be the least variable (cv = 2.2%), while the highest variability (cv = 31.1%) was shown by fat content. Significant correlations for the following trait pairs were observed: protein–gluten, protein–carbohydrates, fat–ash, fat–falling number, carbohydrates– gluten, and ash–falling number.
This study defines several mycotoxin (Aflatoxin B1, Aflatoxin B2, Aflatoxin G1, Aflatoxin G2, Ochratoxin A, Deoxynivalenol, Zearalenone, Toxin T-2, Toxin HT-2, Nivalenol, Fusarenon X, 3-Acetyl-deoxynivalenol) contamination of winter common, durum, spelt and einkorn wheat genotypes. The compared species (Triticum aestivum ssp. vulgare, T. durum, T. aestivum ssp. spelta and T. monococcum) have different susceptibility to Fusarium and toxin accumulation. Durum wheat (cv. Komnata) was the most susceptible to contamination with mycotoxins. In durum grain the highest level of contamination was detected, especially with Deoxynivalenol (2–4 times over the allowed level for unprocessed grain). T. aestivum ssp. spelta (cv. Schwabenkorn) and T. monococcum (EN 5003) showed the lowest mycotoxin level. Triticum aestivum ssp. vulgare (cv. Tonacja) was less contaminated with mycotoxins than Triticum durum but more than T. aestivum ssp. spelta and T. monococcum. Other mycotoxins in grain of the examined genotypes occurred in trace amounts.
A study run in the years 2000–2002 aimed at determining the effect of the kind of redardant, application stage and rate on the yields and quality traits of winter wheat.
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