root system

The object of the study was sprouts of durum wheat Triticum durum L. Cultivation was carried out at a temperature of 15 ± 1°C and 20 ± 2°C. To study the influence of the temperature factor on the development of the photosynthetic apparatus, the quantitative content of chlorophyll a, chlorophyll b, and carotenoids was determined. Some varieties, when subjected to a change in the temperature of cultivation, respond with a change in the indices determining their stress tolerance, namely the ratio of chlorophyll a and chlorophyll b, carotenoids and chlorophylls.

The article presents the results of studying the dynamics of the formation of the root and above-ground mass of spring soft wheat, virgin and fallow cenoses under the conditions of 2012 and 2018. The dynamics of the placement of the root system of cultivated plants in the grain-pair crop rotation over the vegetation phases was revealed. It was shown that spring wheat forms the secondary root system during the growing season only in favorable meteorological conditions, mainly within the 0–50 cm layer (74%).