GENETIC STUDIES IN A TROPICAL PINE - <em>PINUS</em> <em>KESIYA</em> II. GENETIC VARIATION AMONG FOUR POPULATIONS IN NORTHERN THAILAND

Abstract

The genetic diversity and population structure of four populations of Pinus kesiya from Northern Thailand were investigated by means of isoenzyme analysis. Expected heterozygosities were similar to those obtained for other tropical tree species. Estimates of population differentiation by means of G-statistics indicated comparable levels of differentiation with other conifers and somewhat lower levels than other tropical tree species. Genetic distances indicated that one population in particular (Samoeng) was the main contributor to population differentiation.