Vol. 9, Issue 7, Part F (2025)

Heterosis for seed yield and its components was studied in a set of line x tester crosses of 10 lines and 3 testers. The analysis of variance revealed highly significant differences among the genotypes for all the characters indicating that the genotypes exhibited significant differences for all the characters studied. The differences among the hybrids were also found highly significant for all the characters suggesting the presence of sufficient diversity among hybrids themselves for all the characters. The range of heterobeltiosis for seed yield per plant was from-10.6 to 29.56 percent, while the standard heterosis ranged from-7.74 to 40.35 percent. The cross DSM-34 X TKG-22 had recorded the highest standard heterosis for seed yield per plant followed by KMS-5-391 X TKG-22, DSM-33 X DS-5 and DSM-33 X JTS-8. These crosses also displayed favorable heterosis in key yield characteristics, indicating that the heterosis observed in seed yield can be attributed to the heterosis seen in its constituent traits. This presents an opportunity for further utilization in sesame breeding.