EKISH MUDDATI VA BIOSTIMULYATORLARNING KUNJUT O‘SIMLIGIDA FOTOSINTEZ, TRANSPIRATSIYA HAMDA GENERATIV ORGANLAR SHAKLLANISHIGA TA’SIRI

Abstract

The study investigated the effects of different sowing dates and biostimulant application on photosynthesis, transpiration, and generative organ formation in sesame (Sesamum indicum L.) varieties Tashkentskiy-122 and Qora Shahzoda under the conditions of the Surkhandarya region. During the growing season, leaf apparatus activity, net photosynthetic productivity, water exchange, and the dynamics of yield component formation were studied. The results showed that net photosynthetic productivity reached its highest level during the capsule-filling stage. In Tashkentskiy-122,  the value reached 9.79 g/m²/day in the biostimulant-treated variant, while in Qora Shahzoda it reached 9.52 g/m²/day. Biostimulant application generally increased photosynthetic activity compared with the control.