STUDY OF THE GENETIC ANALYSIS OF SOME SELECTED OKRA GENOTYPES

An experiment was conducted at the experimental farm, Department of Horticulture, Bangabandhu Sheikh MujiburRahman Agricultural University, Gazipur with an aim to study the genetic variability of selected okra genotypes. The study was laid out in Complete Randomized Block Design from March 2008 to July 2008. The studied characters were studied to find out the genetic variability, heritability and genetic advance, and correlation coefficient. The genotypes varied significantly (p< 0.01) for all of the characters studied. The phenotypic and genotypic variance was highest for plant height (252.54 and 422.78) followed by fruits per plant (6.33 and 7.19) and yield (6.06 and 7.17). The estimate of heritability in broad sense ranged from 28.60% for fruit weight to 87.96% for fruits per plant. The heritability estimate in broad sense was high (>60%) for branches per plant (63.58%), picking duration (70.04%), days to first fruit harvest (71.46%), fruits per plant (87.96%) and fruit yield (84.55%). The genetic advance (in % of mean) ranged between 5.00% for days to first flowering to 52.08% for yield (t/ha). The highest (≥20%) genetic advance was observed for branches per plant, days to first fruit harvest, fruits per plant and yield (t/ha). The high degree of genotypic and phenotypic coefficients of variation were recorded in number of primary branches per plant (26.10% and 20.81%), fruits per plant (26.26% and 24.63%) and fruit yield (29.90% and 27.49%), respectively. This experiment aimed to evaluate the okra genotypes for genetic variability analysis with a view to providing information onthe selection of high yielding.