Abstract:

A mating system of the seedling seed orchard of Pinus massoniana in Baisha Forest Farm，Fujian Province, was studied by microsatellite (SSR) markers. Six SSR primers selected from 215 primers were used for the mating system analysis. The results were as follows: 1) The outcrossing rate of the seed orchard was very high. The multilocus outcrossing rate was similar between 2006 and 2007, and was respectively 1.200(standard deviation, SD=0.000) and 1.072 (SD=0.066). 2)The outcrossing rate in the top canopy of the crown was higher than those from the middle and bottom position of the crown. Eastside of the crown had a lower outcrossing rate than the other sides. 3) There was not significant difference in the north and west hillside in the seed orchard.

Key words: Pinus massoniana, seedling seed orchard, mating system, SSR marker