In this paper presents results of researches on impact of natural hot wind on row of cotton varieties created by scientists of Uzbekistan. It has been established that among 35 varieties and cotton lines studied in the conditions of the natural hot wind, plants of the varieties Bukhara-6, C-6541, Namangan-77, Andijan-37, Kupaysin, Istiklol-14, Dzharkurgan retained from 61.4% to 71,3% of yield elements and varieties C-9082, Beskakhramon, Termez-256, Kupaysin, Barhayot, Istiklol-14, Namangan-77 and UzFA-703 showed high productivity. These varieties can be attributed to the relatively resistant to hot wind.