CAJ | 학술논문

以胡桃楸（ Juglans mandshurica）和黄波椤（ Phellodendron amurense）的根尖（典型吸收根）为材料，研究了根尖解剖特征并估计了理论导水率，以及二者之间的潜在联系。结果表明：黄波椤根尖的理论导水率（即轴向导水率）比胡桃楸高出近2倍。两树种根尖的理论导水率均与根解剖特征之间存在紧密的联系，其中导水率与平均导管直径、最大导管直径、导管数目均存在较强的正相关关系（ P＜0．05），但是与根直径、中柱直径相关性较弱。多元回归分析表明，解剖特征可分别解释导水率72％（胡桃楸）和83％（黄波椤）的变异。
이호도추（ Juglans mandshurica）화황파라（ Phellodendron amurense）적근첨（전형흡수근）위재료，연구료근첨해부특정병고계료이론도수솔，이급이자지간적잠재련계。결과표명：황파라근첨적이론도수솔（즉축향도수솔）비호도추고출근2배。량수충근첨적이론도수솔균여근해부특정지간존재긴밀적련계，기중도수솔여평균도관직경、최대도관직경、도관수목균존재교강적정상관관계（ P＜0．05），단시여근직경、중주직경상관성교약。다원회귀분석표명，해부특정가분별해석도수솔72％（호도추）화83％（황파라）적변이。
We explored the characteristics of anatomy and their relationship to theoretical conductivity of root tips in both Juglans mandshurica and Phellodendron amurense.The theoretical hydraulic conductivity ( axial conductance ) was higher in P. amurense than that in J.manshurica.In both species, theoretical hydraulic conductivity was closely related to the anatomi-cal traits.There were strong positive correlations between root conductance and mean conduit diameter, maximum diameter of conduits, and number of conduits, but weak for stele and root diameter.By multiple linear regression, the anatomical traits could explain the variation of root hydraulic conductivity in J.mandshurica (72%) and P.amurense (83%).