不同火炬树种群的克隆分株能力比较研究

Comparative Study on the Clonal Reproduction Ability of Different Rhus typhina Populations

火炬树(Rhus typhina)为漆树科(Anacardiaceae)盐肤木属落叶灌木或小乔木;其水平根系发达,根蘖力强,是植被恢复与构建、环境美化和风景林营建的优良树种之一。现以北方民族大学校园内3个火炬树小种群为材料,研究了不同种群的克隆分株能力。结果表明:3个种群克隆分株产生萌条的株高、基径、复叶数和生物量积累量均有很大差异。可能是产生克隆分株的根径较小和克隆分株距离母体植株较远造成的,同时也可能与不同种群斑块环境条件的差异或不同的管理措施有关。

Rhus typhina is a defoliated shrub or little arbor species of Anacardiaceae.This species possessed developed root system and strong sprout ability and was considered as one of the promising tree species of restoration and costruction of vegetation,prettification of environment and construction of scenic garden.In this paper,the ability of clonal reproduction of three little R.typhina populations was investigated.The results showed that the sprout（clonal ramet）height,basal stem diameter,paripinnate number and biomass of sprout of different R.typhina populations differed significantly.This may be mostly resulted from the smaller lateral root diameter and the nearer distance between clonal ramet and mother plant or related to the environmental conditions of different population patches or different management measures.