O‘ZBEKISTON SHAROITIDA SHOLI (ORYZA SATIVA L.) NING “BILLUR” VA “ZIYNAT” NAVLARI O‘SISHI HAMDA RIVOJLANISHINING FIZIOLOGIK XUSUSIYATLARI

Abstract

This paper analyzes the effects of environmental factors on the water balance and physiological parameters of rice (Oryza sativa L.) varieties “Billur” and “"Zinat”. During the study, a comparative evaluation was conducted on the water-holding capacity, transpiration intensity, and biomass accumulation characteristics of these varieties. The results indicated that the “Billur” variety is an intensive-type cultivar capable of exhibiting high productivity under optimal agrotechnical conditions. In contrast, the “Zinat” variety demonstrated superior physiological adaptability to external stress factors, particularly water deficit.