Assessment of Variation in Planting Stock Quality of Open Pollinated Seeds of Teak Clones

The investigation was carried out on 25 teak clones of Orissa, India, to find out the variation in growth and quality of planting stock raised from open pollinated seeds. The clonal trees are of 30-year old and at a spacing of 6m x 6m in the seed orchard at Silvicultural Research Station, Koshala, Angul, Oriss. The seeds were collected in month of January, 2014. After pre-sowing treatment, the seeds were sown in forest nursery in first week of April, 2014. The growth and quality parameters of seedlings were studied at 3-month interval from the date of sowing for nine months till the deciduous phase started. The collar diameter, height, shoot biomass, root biomass, total biomass and quality of seedlings varied significantly among clones. All the parameters progressively increased with age. At all ages ORANP-17 excelled in all parameters closely followed by ORANP-16. At 9 month age the range of variation among clones was: 0.53–0.95 cm collar diameter, 20.06–50.02 cm height, 6.26–22.19 g shoot biomass, 5.33–18.93 g root biomass, 11.88–41.12 g total biomass and 2.37–6.39 quality index. ORAN-2 produced lowest quality planting stock among the clones studied.