【摘要】 以小陇山林科所水曲柳种质资源库内106个4年生水曲柳无性系为材料，分析了不同小叶数复叶构件生物量的分配规律及其构件生物量之间的相互关系。结果表明：水曲柳全部样本复叶生物量为0.325～5.998 g，小叶生物量为0.014～0.526 g，平均都以9片小叶的最大，并显著高于7片和11片小叶，叶轴生物量为0.017～0.664 g，平均以11片小叶的最大并显著高于7片和9片小叶，不同复叶构件生物量具有较大的变异性，其变异系数为30.92%～44.62%，对生左、右小叶的生物量分配具有对称性，相同叶序的小叶生物量分配随小叶数增多而减小，不同复叶构件生物量之间的关系除11片小叶的小叶生物量与叶轴生物量为指数函数的异速生长型外，其余的都为直线函数的同速生长型。更多还原

【Abstract】 Using 106 4-year-old Fraxinus mandschurica clones from the Fraxinus mandschurica germplasm resource bank of the Xiaolongshan Forestry Institute, as materials, the distribution patterns of biomass in different compound leaf components and the interrelationships between component biomass were analyzed. The results show that the biomass of compound leaves in all samples of Fraxinus mandschurica was 0.325～5.998 g. The biomass of leaflets was 0.014～0.526 g, and 9 leaflets were the largest, significantly higher than 7 and 11 leaflets. The biomass of the leaf axis was 0.017～0.664 g, 11 leaflets were the largest and significantly higher than 7 and 9 leaflets. The biomass of differentcompound leaf components had significant variabilitywith a coefficient of variation was 30.92%～44.62%. The biomass distribution of the opposite left and right leaflets had symmetry. The biomass distribution of leaflets with the same leaf sequence decreased as the increasing of the leaflets number. The biomass relationship of different compound leaf components were the same-speed growth type of the linear function.Except for the leaflet biomass and leaf axis biomass of 11 leaflets were the, allometric growth type of the exponential function.更多还原