Genetic variability, heritability and genetic advance for yield and yield components in castor (Ricinus communis L.) genotypes

摘要

The present investigation was carried out in 64 castor (Ricinus communis L.) genotypes. The material for investigation consisting of 14 advanced lines, six male lines, 38 germplasm accessions, two pistillate lines, two released varieties and two checks (Kiran and 48-1) were grown in a randomized block design in two replications at Directorate of Oilseeds Research, Hyderabad. Variability parameters were estimated for seed yield (g/plant) and yield component characters. Seed yield at 120 days after planting recorded highest phenotypic coefficient of variability (PCV) value (50.2%). Highest genotypic coefficient of variability (GCV) value was recorded for seed yield at 150 days after planting (49.5%). The highest heritability was recorded by seed yieldat 180 days after planting (97.4%) followed by seed yield at 150 days after planting (97.2%). The genetic advance as per cent of mean was highest for seed yield at 150 days after harvesting^ 100.4%) followed by seed yield at 120 days after planting (96.6%), effective spike length (89.4%), seed yield at 180 days after planting (86.4%) and number of capsules/plant (72.7%). The character seed yield revealed high variability, heritability and genetic advance as per cent of mean.