Cytogenetic Abnormalities in Norway Spruce (Picea abies (L.) Karst.) Seedlings from Natural Populations and an Introduction Plantation

摘要

Comparative studies of the frequency and spectrum of pathological mitoses (PMs), as well as of the nucleolus number in the interphase nucleus, in cells of Norway spruce (Picea abies (L.) Karst.) seedlings were carried out in two natural populations of Ukrainian Polesie and plants from an introduction plantation in Donbass. Low levels of PMs in the seed progeny of the populations (0.32-0.38%) and a slightly higher level in the plantation progeny (0.40%) are established. The number of nucleoli was somewhat higher in the progeny of the populations (5.35-5.85) than that of the plantation plants (4.95). The PMs frequency was higher (0.43%) in the progeny of low-heterozygous plants than in highly heterozygous ones (0.28%).