Current research work was conducted for inheritance study of different morphometric traits in 15 X 15 half diallel cross excluding reciprocals. Fifteen parental lines Moroco, Avocit-YRA, Auqab-2000, Kohistan-97, Pirsabak-08, Margalla-99, Sehar-2006, Chakwal-86, Galaxy-13, Local white, Pak-81, Lasani-2008, Faisalabad-08, BARS-2009 and Mairaj-08 were crossed in half diallel fashion during growing season 2016-17, F₁ evaluated in 2017-18 and F₂ in 2018-19. Analysis of variance indicated significant mean squares for all traits conferring high diversity among parents. Inheritance study revealed additive type of gene action for plant height (F₁), fertile tiller/plant (F₂), harvest index, stay-green trait, 1000 grain weight and peduncle length. Important role of dominance variance for controlling gene expression was found in days to flowering, plant height (F₂), flag leaf area, fertile tiller/plant (F₁) and number of kernels/spikes.

Keyword: Additive, diallel, dominance, genetic components, heritability, Inheritance, wheat