GENETIC VARIATIONS IN SORGHUM SEGREGATING POPULATIONS BASED ON YIELD AND AMYLOSE CONTENT

Abstract

The availability of sorghum varieties with good cooking quality will increase its use as a food source and for industrial needs. Amylose content is one of the biochemical characteristics that influence cooking quality. This study aimed to scrutinize the inheritance patterns of agronomical traits and amylose content in segregating the sorghum population. The field experiment was conducted from February to July 2022 at Cikarawang Experimental Field, IPB University, Bogor, Indonesia. The three F2 populations, Pulut 3 × Kawali (372 plants), Pulut 3 × Soraya 3 IPB (340 plants), and Pulut 3 × PI-150-20A (363 plants) and their parental genotypes were evaluated. The three populationsshowed significant variations in agronomic traits. The panicle weight has a heritability value of 63% in Pulut 3 × Kawali, 36.7% in Pulut 3 × Soraya 3 IPB, and 59.8% in Pulut 3 × PI-150-20A. The waxy and non-waxy type segregation was apparent in F3 population seeds, with a 15:1 ratio in the Pulut 3 × Soraya 3 IPB and Pulut 3 × PI-150-20A populations. Meanwhile, a 1:1 ratio was evident in the Pulut 3 × Kawali population. Selection could be conducted for waxy type at early generation followed by selection for yield at later generation.