Correlation and path analysis studies in teak, Tectona grandis L for stem volume production

The present investigation entitled ‘Correlation and path analysis studies in teak, Tectona grandis L for stem volume production’ was carried out during the year 2011–12 in the Department of Forestry, Dr PDKV, Akola, Maharashtra and the observations were taken from teak seed orchard, Mohghata, district Bhandara, Maharashtra. The study was undertaken for thirty clones of teak using randomized block design with three replications. The teak plantation was established in the year 1977 at a spacing of 8 x 8 m. In each treatment there were three plants of each clone in one replication. One plant per treatment was selected randomly to record observations for six characters. The genotypic and phenotypic correlation studies between stem volume contributing traits revealed that stem volume per plant was closely associated with plant height and number of branches which exhibited positive and significant correlation. Path analysis revealed positive direct effect on volume per plant through plant height, leaf area and number of branches. Hence these characters may be given consideration while formulating selection indices for the improvement of teak.