Comparison of Genetic Structure between Parents and Progeny from a Masson Pine Seed Orchard and a Plantation Nearby

Genetic structure of parents and their progeny from a masson pine clonal seed orchard and a plantation near the orchard in Guigan,Guangxi Province was studied with isozyme markers.The results showed that for both the seed orchard and the plantation near the seed orchard,the parental populations did not deviate from the Hardy-Weinberg Equilibrium significantly with excess of heterozygots,the progeny populations had the opposite case,i.e. diveating from the Equilibrium significantly with excess of homozygots. There was a small difference in gene frequencies between the parents and their progeny.Progeny of the seed orchard got a little lower gene diversity than that of its parental population,while the progeny of the plantation near the seed orchard got a little higher gene diversity than that of its parents. The genetic base of the seed orchard was fairly wide. Although both parents and offspring from the plantation near the seed orchard held relatively lower gene diversities than those from the seed orchard, the difference between them was very small.