Cluster and Stability Analysis for High Oil Yield Performance in Lemongrass (Cymbopogon flexuosus Steud)

Abstract

The collected thirty-three germplasm of lemongrass including checks from Chhattisgarh and from different state of India. Experiment was conducted on Research cum instructional farm of IGKV, Raipur in RCBD design in three replications from 2021, 2022, 2023 and 2024. The plant geometry was maintained as 30X30cm. The observation was recorded in randomly selected five plants. The data was analysed for the genetic diversity and were studied using cluster analysis and stability analysis for oil content (%). D2 Statistical analysis bared that thirty-three genotypes were divided into six different cluster in which cluster I consist of maximum genotypes whereas cluster IV, V and VI bear one genotype in each. The distance between cluster III and cluster V has maximum inter cluster distance (1005.88), greater the distance between two cluster the greater the divergence and vice-versa. Maximum inter cluster distance also implies that the hybridization made including parents from these cluster will produce enhance segregates for crop improvement and develop better cultivar. Cluster I and cluster IV inter cluster distance were less, it suggests that these clusters consist are more similar genotypes. In completion of diversity study lemongrass accessions C.G. CF- 4 and C.G. CF-2 have potential to became highest oil yielding variety. Stability analysis was conducted for consecutive data from 2021-2024 in which for oil content (%) among all accessions in which C.G. CF-4 reported with highest oil content (%) among all check with 2.18% oil percentage and found stable genotypes across the environment.