Effect of growth regulators on length of stem, nitrogen reductase activity and chlorophyll content in leaves of some varieties of winter wheat.

摘要

Two growth regulators (trinexapac-ethyl at 150 g and chlormequat chloride at 2.17 kg) were applied at 3 growth phases (BBCH 31, 32 and 37) of 5 winter wheat cultivars (Bogatka, Kobra Plus, Opus, Tonacja and Zyta). Stem height reduction was the highest in Bogatka and Kobra Plus. The highest increase in chlorophyll content in leaves of plants was recorded in Bogatka, Kobra Plus and Zyta. There was also higher activity of nitrate reductase in leaves, especially in Kobra Plus and Bogatka.