Estimation of genetic parameters and heterosis through line × tester crosses of national sorghum varieties and local Indonesian cultivars

Abstract. Rachman F, Trikoesoemaningtyas, Wirnas D, Reflinur. 2022. Estimation of genetic parameters and heterosis through line × tester crosses national sorghum varieties local Indonesian cultivars. Biodiversitas 23: 1588-1597. Diverse gene sources possessed by cultivars are potentially useful for superior development. This study aimed to determine the lines derived from crosses. A total eight F1 hybrids mating design with four (PI-150-20A, Soraya 3 IPB, Kawali, Bioguma 1 Agritan) two testers (Pulut Pulut 5) were used in present study. experiment was arranged a randomized complete block (RCBD) three replications. Results showed that several agronomical important traits, such as plant height, leaf number, days flowering, harvesting, panicle length, diameter, 1000-grain weight significantly affected additive action, while others non-additive action. Based on field observation, out six parental best performance grain yields traits. Of these, IPB 5 Agritan cross combination showing high values both combining ability parameters. These findings would help breeders selection methods desirable traits combinations develop new variety yield performance.