THE ROLE OF THE FLAG LEAF IN THE FORMATION OF THE YIELD OF WINTER WHEAT PLANTS (TRITICUM AESTIVUM L.) GROWN FROM SEEDS TREATED WITH THE BIOSTIMULANT REGLALG
Nicolai PLATOVSCHII, Alexandru DASCALIUC, The Institute of Genetics, Physiology and Plant Protection, Moldova State University
Abstract
The effect of treating seeds of hexaploid wheat Moldova 5, Missia and Kuyalnik with the biostimulator (BS) Reglagl on the activity of the flag leaf photosystem II (PS-2) and the yield during the period of formation and ripening
of grain in the ear was studied. The experiments were conducted during 2015 -2018 at the Experimental Field of the
Institute of Genetics, Physiology and Plant Protection, MSU. The duration of the grain formation and maturation
phases in Moldova 5 plants was 26 days, and in Missia and Kuialnik plants - 33 days. The application of BS Reglagl
contributed to extending the duration of grain formation and maturation by 1-3 days. In the control variants, the
harvest was 3.76 - 4.20 t/h, and in the experimental ones - 3.81 - 4.73 t/h. The efficiency of seed treatment with BS
Reglagl varied depending on the variety and the climatic conditions of the year.
Keywords: Triticum aestivum L., varieties, seeds, BS Reglalg, harvest, activity PS-2, flag leaf.
