FEATURES OF THE FORMATION OF ELEMENTS OF PRODUCTIVITY AND QUALITY IN VARIETIES OF SPRING WHEAT

Тhe purpose of the study was to give a more complete morphological characteristic of varieties, to trace the accumulation of nitrogen in plants and grains by development phases and to identify the strength and direction of the relationship between the studied indicators. It was established that the productivity correlated with the area of the flag leaf (r = 0.79 ***), the length of the lower internodes, (0.68 **), the number of spikelets formed in the ear (r = 0.71 **). It was found that an indicator of the length of the second lower internodes greatly reacted to the deterioration of environmental conditions by a decrease in values by 37.5 - 47.3%. Reliable positive correlation coefficients of this indicator with productivity, the number of spikelets in the spike (r = 0.65 **), the flamer area (r = 0.77 **) and the nitrogen content in Plants in the phases of the nationwide and tube (r = 0.64 **- 0.67 **). It was found that the indicator of the second from below the internodes was as informative and greatly dependent on the conditions of the growing season. It was found that the area of the flag leaf is closely interconnected with the productivity, the length of the lower internodes and the nitrogen content in plants in the phases of the enforcement and tube. The length of the preflag leaf shows a stronger relationship with the length of the spike and the elements of the productivity of the ear: r = 0.71 **- 0.84 ***. The nitrogen content in the suppression phase positively correlated with the length of the lower internodes and the area of the flag leaf (r = 0.64 **), which in direct effect on the protein content in the grain of complete ripeness (r = 0.66 **). The relationship of the nitrogen content of nitrogen in plants for the period for the period and in the grain of dairy spells in the varieties of soft wheat is obvious, which must be used in breeding practice.