Correlated Response in Brown Sarsom

The present investigation was undertaken to analyse the relationship between different quantitative characters and to test their suitabilitiy for making direct and indirect selection. Biparental crosses were attempted using Design 1 proposed by Comstock and Robinson (1952). Number of secondary branches, pod length, number of seed per pod and 1000-seed weight had high and significant genotypic and phenotypic correlations with seed yield. Plant height, days to maturity, number of pods on main shoot and number of primary branches had medium correlation with seed yield, whereas days to flower had low genotypic and phenotypic correlations with yield. 1000-seed weight was found negatively associated with pod length and number of seeds per pod. High and positive correlation between 1000-seed weight, on one hand, and days to maaturity, number of primary and secondary branches and number of pods on main shoot on the other hand, was noticed. Pod length was negatively correlated with number of primary and secondary branches and number of pods on main shoot. The number of pods on main shoot was negatively associated with the number of secondary branches. Plant height had high correlation with number of pods on main shoot. Primary branches were significantly and positively correlated with number of secondary branches. Maximum genetic gain was observed for yield itself. Maximum correlated response was noticed through selection on traits like seeds per pod, 1000-seed weight and number of pods on main shoct. Number of secondary branches had the highest correlated response. Relative selection efficiency was nearly one in case of secondary branches indicating that selection through this character is expected to be as useful as the direct selection on yield itself.