Intraspecific hybridization in Pinas roxburghii Sargent

摘要

Inter-racial hybridization was performed successfully in Pinus roxburghii taking three different provenances, i.e. Pauri, Badiyargarh and Srinagar (locality-specific) at lower (900 m a msl) and higher (1900 m a msl) altitudes. The results revealed that cone and seed setting percentages in the selected provenances varied from 38.57 to 60.00% and 76.00 to 88.00% at the lower, and 36.00 to 58.33% and 68.00 to 84.67% at the higher altitudes, respectively. Controlled pollination resulted in enormous fertilization success, with no signs of incompatibility. Ovulate strobili remained receptive up to 5 days.