Analisis Genetik dan Seleksi Segregan Transgresif pada Populasi F2 Sorgum Hasil Persilangan B69 × Numbu dan B69 × Kawali

Abstract

The genetic analysis and selection of transgressive segregants on agronomic characters are required in a sorghum
breeding program for obtaining high proportion homozygosity rapidly in the early generations. This study aimed to obtain
the information on the performance of agronomic characters, estimate genes’ action, broad-sense heritability, coefficient of
genetic variability, and select transgressive segregant on F2 population of sorghum based on grain yield. The research was
conducted from July 2014 until October 2014 in Dramaga, Bogor. About 300 and 150 individuals F2 populations of B69 ×
Numbu and B69 × Kawali, respectively, were used as genetic materials. The results showed that plant height and panicle
length of B69 × Numbu and B69 × Kawali populations were controlled by many genes with additive gene action. The grain
yield and grain yield per panicle were controlled by many genes with additive gene action and complementary epistasis,
had high heritability, and large coefficients of genetic variability. The transgressive segregant selection had selected 14
individuals of B69 × Numbu and 134 individuals of B69 × Kawali populations based on grain yield per panicle.