A study was conducted to assess the extent of heterosis and combining ability of muskmelon in a half diallel mating design. Forty five F1 hybrids and ten inbred lines were evaluated for fourteen different characters during 2014-15 at Department of Vegetable Science, Punjab Agricultural University, Ludhiana. The analysis of variance indicated significant variability among all the genotypes for all the traits except fruit weight and acidity. | Heterosis and combining ability for yield in muskmelon Cucumis melo L.