Construction of genetic maps for some Eurasian coniferous species using allozyme genes.

In an analysis of allozyme genes in three pine and one spruce species distributed in Eurasia, 45 of 87 loci were mapped. Four linkage groups in Pinus sylvestris and Picea abies, three in Pinus pallasiana, and two in Pinus pumila were determined. The order and the locations of homologous genes in the linkage groups in the different species were similar. The data suggest that during the separate development of the Pinus and Picea genera that has lasted for millions of years, there was not any large inversion, translocation, or other significant chromosomal change, at least in the gene blocks analyzed.