Stability parameters for grain yield and yield components in sorghum were studied by evaluating seven parents and 42 crosses under low and normal fertility with and without striga infestation. GxE (linear) interaction was significant for all host plant characters except 1000 grain weight. The linear regression indicated that resistant parents were more stable for most of the host plant characters while susceptible parents and crosses had low mean, low V and significant S2d. The RxS and SxR crosses were stable without reciprocal differences. The crosses Involving CSV-8R exhibited below average stability. Stable parents also produced stable hybrids for most of the characters.
Sorghum biocolor, sorghum, disease resistance, phenotypic stability, genotype-environment interaction, striga asiatica
