Genetic variability studies in teak (Tectona grandis L)

The present study was carried out during 2009–2010 at the Department of Forestry, PGI, Dr Panjabrao Deshmukh Krishi Vidyapeeth, Akola, Maharashtra and the observations were taken from National Teak Germplasm Bank, Lohara, district Chandrapur, Maharashtra. The study was undertaken on thirty clones of teak (Tectona grandis L) using randomized block design with three replications. The teak plantation was established in the year 1979 at a spacing of 8 x 8 m. In each treatment there were three plants of each clone. One plant per treatment was selected randomly to record observations for six characters. The highest phenotypic coefficient of variation was observed for volume (m3) and highest genotypic coefficient of variation for leaf area (m2). The heritability for all the characters ranged from 10.70 to 91.67 per cent. Highest genetic advance was observed for the character leaf area (43.76%) that ranged from 5.26 to 43.76 per cent.