Inheritance and linkage of isozyme variants in incense-cedar.

Isozymes extracted from seed of incense-cedar (Calocedrus decurrens [Torr.] Florin) are described. These isozymes appear to be encoded by 27 loci; allelic variants are identified for 25 loci. Three pairs of loci appear to be linked: alpha est:Fest, with a recombination frequency (RF) of 0.02-0.06; Got3:Mdh 1, with an RF of 0.10-0.19; and Got2:Pgi2, with an RF of 0.02-0.11. The latter linkage has been described for several taxa within the Pinaceae; it may represent an ancient arrangement predating the divergence of Pinaceae and Cupressaceae.