Problems of initial selection seed-growing of Pinus pallasiana D. Don in plantations of industrially polluted territories of Krivbas

Individual peculiarities of semenification of 100 model trees of Pinus pallasiana D. Don have been studied in the course of 3 years in four man-made plantations of Krivbas equally exposed to emissions of big industrial enterprises. There have been revealed specimens, tolerant to pollutants with stable high yield of high-quality seeds which are proposed to be used as mother-seed plants for the creation of regional forest-seed basis of this species, perspective for Krivbas.