GENETIC DIVERSITY CORREEXflON AND PATH ANALYSIS OF SNAKE GOURD (Trichosantizes anguina L.)

Abstract

The experiment was conducted on diversity and estimation of genetic parameter, correlation and path analysis of 30 accessions of snake gourd at the experimental farm of Regional Agricultural Research Station. Ishurdi, Pabna of Bangladesh Agricultural Research Institute, during the period from April 2007 to September 2007. Significant variations were recorded among the snake gourd accessions in respect of' different parameters. The accession SNG23 showed the highest perfornianee weight of fruits per plant and yield of fruit. The highest genotypic and phenotypic coefficients were recorded in yield (88.70% and 88.72% ) and second highest was recorded from weight of fruits per plant (88.61% and 88.65%). Howcvcr, days to anthesis of first male flower (43.18% and 43.23% ), days to anthesis of first female flower (26.49% and 26.75%), node number of first male flower anthesis (3 1.08% and 3 1.43%), node number of first female flower anthesis (24.43% and 24.77%), number of fruits per plant (73.37% and 73.55%). days to first harvest (19.54% and 19.88%), days to last harvest (11.65% and 12.25%), average fruit weight (51.33% and 51.36%) and 100 seed weight (23.25% and 23.35%) recorded moderate GCV and PCV. Correlation coefficient indicated that fruit yield per plant was highly significant and there was a positive association with days to anthesis of first male flower, days to anthesis of first female flower, node number of first male flower anthesis, number of fruits per plant, days to first harvest. days to Fast harvest, weight of fruits per plant, average fruit weight and yield (ifha). In respect of path analysis number of fruits per plant, weight of fruit per plant directly contributed to the yield of snake gourd accessions. The accessions were also tested for genetic divergence utilizing the multivariate analysis. The accessions were grouped into four clusters.