Effect of winter wheat variety, hydrothermal coefficient (HTC) and thousand kernel weight (TKW) on protein content, grain and protein yield

The aim of the research is to clarify the physiological and biochemical processes in theplant organism that occur in the optimal and stressful conditions, as well as to search foranthropogenic methods of their manifestation in connection with the protein content in grain ofwheat varieties of different origin in the conditions of the Forest-Steppe Ukraine. The impact oftemperature factor and the moistening mode of the period of winter wheat seed formation andripening (Ttiticum aestivum L.) has been studied. The impact of varieties of Ukrainian and foreignplant breeding on the protein content in grain of the obtained offspring (reproduction yield) hasbeen studied too. The ways to eliminate the influence of weather conditions on the protein contentin grain and on the bases of sowing of different seed fractions have been searched. Researchmethods: field (studying the influence of growing conditions on grain quality), laboratory(determination of protein content), correlation-regression (establishing connection betweenfactors), statistical method (to confirm the difference between variants). According to the resultsof the first stage of research, the dependence has been established: sowing with seed, grown inthe arid conditions, allows obtaining offspring with high protein content, and vice versa. This isconfirmed by the strong correlation both for winter wheat variety. At the second stage of researchit has been determined that sowing with fine seed raises the yield protein content in grain, andprotein yield without additional costs, but using seed, formed in the arid conditions.