The studies were conducted on lines developed from the following varieties: Marksman /М/, Arminda /А/, Liwilla /L/, Kr 118/78 /K/ and F₁ hybrids: M x A, M x L, M x K. A path coefficient analysis was performed to determine the direct and indirect effects of some yield components upon grain weight per ear. The analysis indicated that number of grain per ear, 1000 grain weight and plant height influenced most strongly grain weight per ear in lines and F₁ hybrids. Direct and indirect effects of most components of yield were about equal both in lines and F₁ hybrids.