ALLOZYME DIVERSITY OF <em>KOOMPASSIA</em> <em>MALACCENSIS</em> (LEGUMINOSAE) IN PENINSULAR MALAYSIA

Abstract

LEE, C. T., LEE, S. L., NG, K. K. S., SITI SALWANA, H., NORWATI, M. & SAW, L. G. 2007. Allozyme
diversity of Koompassia malaccensis (Leguminosae) in Peninsular Malaysia. Population genetic study of
Koompassia malaccensis, an important tropical timber tree species, was carried out using allozyme markers.
Six natural populations, namely, Bukit Bandi, Bukit Lagong, Jerangau, Pasoh, Sungai Lalang and Sungai
Menyala were investigated. The results showed that K. malaccensis harboured a higher level of allozyme
diversity (mean expected heterozygosity, H_e = 0.253, mean number of alleles per locus, A_a = 2.8 and effective
number of alleles per locus, A_e = 1.27), compared with other regionally distributed tropical long-lived tree
species. Majority of the diversity was partitioned within-population (F_st = 0.045). No correlation was detected
between geographical distance and genetic distance (Mantel test, r = -0.0031, p = 0.5130). Only one private
allele was detected in Sungai Lalang population.