Abstract:
The experiment was conducted in the experimental area of Sher-e-Bangla Agricultural
University, Sher-e-Bangla Nagar, Dhaka during the time period of March to June 2022 to find
out the character association of 32 sesame genotypes. Mean performance, variability,
correlation matrix, path analysis and genetic diversity analysis on different yield contributing
characters and yield of sesame genotypes was estimated. The longest plant (127.87 cm) was
found in the genotype of G-3, whereas the shortest plant (93.29 cm) from the genotype of G-1.
The highest yield/plant (307.67 g) was found in the genotype of G-27, whereas the lowest
yield/plant (83.20 g) was observed from the genotype of G-10. Phenotypic coefficient of
variation was higher than the genotypic coefficient of variation for all the yield contributing
traits. In correlation study, significant positive association was recorded for yield/plant of
sesame genotypes with number of branches/plant (-0.049), number of capsules/plant (0.879),
length of capsule (0.355) and number of seeds/capsule (0.554). Path analysis revealed that days
to first flowering had negative direct effect (-0.326) on yield/plant. Number of capsules/plant
had positive direct effect (0.859) on yield/plant. Number of branches per plant had negative
direct effect (-0.077) on yield/plant. Number of seeds/capsule had positive direct effect (0.290)
on yield/plant. Weight of 1000 seeds had positive direct effect (0.267) on yield/plant. In genetic
diversity, cluster I was the largest cluster comprising of 20 genotypes followed by cluster II
with 9 genotypes, cluster III belongs 2 genotypes and cluster IV have 1 genotypes of sesame.
Inter cluster distance was maximum (2.761) between clusters II and III, followed by clusters II
and I (11.165). In consideration of yield contributing characters and yield G-27 perform better
followed by G-24 and G-9.
