CORRELATION AND PATH COEFFICIENT ANALYSIS OF EARLINESS, FIBER QUALITY AND YIELD CONTRIBUTING TRAITS IN COTTON (Gossypium hirsutum L.) - J. Farooq; M. Anwar; M. Riaz; A. Farooq; A. Mahmood; M. T. H. Shahid; M. Rafiq S.; F. Ilahi (Journal of Animal and Plant Sciences, 2014)
The present investigations were designed to determine genotypic, phenotypic correlation coefficients and path analysis between seed cotton yield, earliness, fiber and yield contributing traits in 53 cotton cultivars. Heritability and genetic advance was computed to determine the selection procedure for the material studied. Maximum value of GCV% and PCV % was observed in CLCuV% and seed cotton yield. Maximum broad sense heritability was found in traits like FS (99%) followed by BW (98%) GOT% (97%) and FF (96%). Moderate estimates of heritability were found for nodes to 1st fruiting branch (35%) monopodia per plant, (34%) and sympodia per plant (43%). Regarding correlation studies seed cotton yield have positive genotypic correlation with bolls per plant, plant height, boll weight, staple length and strength, earliness index and GOT%. Path coefficient analysis results revealed that the traits like earliness index% showed maximum positive direct effect on yield (0.63) followed by days taken to 1st square (0.17), GOT% (0.16) plant height (0.15), boll weight (0.15) and sympodia per plant (0.11). The traits like EI% and boll weight showed positive correlation, higher heritability estimates and positive direct effect on yield thus may be used as selection criteria to increase yield.
Keywords: journal article; Heritability; Genetic Advance; genotypic correlations; path analysis; cultivars; seed cotton yield; Cotton