Abstract
The study evaluated the phenological development, spike length, thousand-kernel weight, and yield performance of more than 60 local and foreign winter wheat genotypes under the conditions of Tashkent region. Differences in the duration of phenological stages reflected the ecological adaptability of the genotypes. Morphobiometric traits showed strong correlations with yield, with thousand-kernel weight identified as the most stable determinant of productivity. Genotypes such as ASR, Vexa, Grom, and Antonina demonstrated high adaptability and yield potential under the agro-climatic conditions of Tashkent.