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利用同工酶分析技术对长白落叶松（ＬａｒｉｘｏｌｇｅｎｓｉｓＨｅｎｒｙ）天然群体遗传结构进行了研究，用３种酶系统（ＧＯＴ、ＭＤＨ、ＥＳＴ）、７个位点对１１个天然群体进行了分析。结果表明：长白落叶松具有较高的变异水平．所有位点的平均多态位点百分率为６３．９％、每个位点的等位基因平均数为１．６２、平均期望杂合度为０．２０６、且群体处于Ｈａｒｄｙ－Ｗｅｉｎｂｅｒｇ遗传平衡状态；群体的分化程度较低．９０．４％的变异来自于群体内．９．６％的变异存在于群体间．平均遗传距离为０．０７２４：而表型性状的遗传变异中．７３．８％的变异来自于群体内．２６．２％的变异来自群体间。长白落叶松群体在酶位点和表型性状上的变异趋势基本一致。
The genetic structure of natural population of Larix olgensisHenry was studied by isoenzyme analysis. Eleven natural populations were analyzed by three enzyme systems (GOT, MDH, EST) and seven loci. The results showed that: Larix olgensis has a higher level of variation. The average percentage of polymorphic loci in all loci was 63.9%, the average number of alleles in each locus was 1.62, the average expected heterozygosity was 0.206, and the population was in Hardy-Weinberg genetic equilibrium. The degree of differentiation of the population is low. 90.4% of the variation came from within the population. 9.6% of the variation exists in the population. The average genetic distance was 0.0724: while phenotypic traits were in genetic variation. 73.8% of the variation came from within the population. 26.2% of the variation came from the inter-group. Variation trend of the larch population on the enzyme sites and phenotypic traits was basically the same.