diversity of bread wheat inbred lines (f9) derived from the crossing of “marvdasht” ˟ “rasoul”

The importance of bread wheat as one of the most strategic grain is clear for everyone. estimates of the international maize and wheat research center (cymmyt) indicate that the global demand for wheat in 2050 will be 60% higher than the current demand (about 663 million tons). this is while the amount of available wheat resources will decrease by 20-30% (keshavarznia et al., 2023). the area under wheat cultivation in iran during 2021-2022 cropping year was equal to 6.9 million hectares, from which 13.2 million tons of wheat were harvested (anonymous, 2023). genetic diversity is considered as one of the basic pre-requisites in crop breeding programs, because it helps in better selection and thus improvement and introduction of adaptable genotypes with high yield potential. performance and its components are easily measurable and have high heritability. therefore, selection based on these traits, which have a strong correlation with grain yield, can be a reliable and effective method for screening available genetic resources and indirectly improving grain yield (khoury et al., 2023). the current research was conducted with the aim of selecting the best bread wheat lines in terms of yield and other agronomic characteristics.