Oleoresin tapping is an important forest based industry having a bearing on the rural economy and its products, resin and turpentine serve as raw material for soap, paper, paints and a variety of other chemical industries. Out of the six indigenous species of Pinus in India, Pinus roxburghii (Chir pine) is extensively tapped for the production of oleoresin. Genetic improvement of the species for this trait can go a long way for increasing resin production. Presently, ten high resin yielding trees (HRY) were selected from four forest divisions of Himachal Pradesh and were studied for cone and seed characters. Their progenies were raised at three different sites, viz., Nauni, Samloti and Bajaura and the performance of the progenies was observed besides working out the phenotypic correlation and genotype x site interaction at the juvenile stage.
Sehgal et al. (Wed,) studied this question.