当前位置: 首页 > 文章 > 胡桃楸和黄波椤根尖导水率及影响因子 东北林业大学学报 2014 (9) 8-11+24
Position: Home > Articles > Hydraulic Conductivity of Root Tips and Related Anatomical Traits in Juglans mandshurica and Phellodendron amurense Journal of Northeast Forestry University 2014 (9) 8-11+24

胡桃楸和黄波椤根尖导水率及影响因子

作  者:
王燕;王韶仲;董雪云;王政权;谷加存
单  位:
东北林业大学
关键词:
根序;根形态;根尖解剖;胡桃楸;黄波椤
摘  要:
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。
译  名:
Hydraulic Conductivity of Root Tips and Related Anatomical Traits in Juglans mandshurica and Phellodendron amurense
作  者:
Wang Yan;Wang Shaozhong;Dong Xueyun;Wang Zhengquan;Gu Jiacun;Northeast Forestry University;
关键词:
Branch order;;Root morphology;;Anatomy;;Juglans mandshurica;;Phellodendron amurense
摘  要:
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 anatomical 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%).

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