Construction of Molecular Linkage Map in Masson Pine Using RAPD Markers and Megaga metophytes from a Single Tree

A set of 300 random ohgonucleotide primers was screened for random amplified polymorphic DNA (RAPD) fragments within a sample of 79 megagametophyte DNAs of a single masson pine ( Pinus massoniana Lamb. ) to generate RAPD markers and construct the molecular linkage map for masson pine. 64 repeatable RAPD markers segregated in a 1 present to 1 absent ratio. Through multipoint linkage analysis, 47 markers were assigned to 13 different linkage groups(pairs). It covered a tdtal genetic distance of over 692.5 cM (centimorgan). The average distance between markers was 14.7 cM. It supplied a linkage framework for a more saturated linkage map of masson pine.