基于木质部解剖特征的中华木兰与3种古茶树进化研究  

The Evolution of Magnolia miocenica and 3 Ancient Tea Trees Based on the Anatomic Structure of Xylem

作　　者：梁涤 李有贵 高景然[1] 邱坚[1] Liang Di;Li Yougui;Gao Jingran;Qiu jian(Southwest Forestry University,Kunming Yunnan 650233,China;Product Quality Supervision and Inspection Institute,Kunming Yunnan 650214,China)

机构地区：[1]西南林业大学,云南昆明650233 [2]云南省产品质量监督检验研究院,云南昆明650214

出　　处：《西南林业大学学报（自然科学）》2023年第5期145-152,共8页Journal of Southwest Forestry University：Natural Sciences

基　　金：云南省自然科学基金基础研究专项重点项目(202001AS070044)资助。

摘　　要：以中华木兰和同一茶山上的3种不同驯化阶段的古茶树为研究对象,通过对中华木兰和3种古茶树的木质部解剖特征进行比较分析,探索中华木兰和3个不同驯化阶段的古茶树在次生木质部解剖构造上的区别与联系,进而分析4个树种之间的进化顺序。结果表明:从管孔轮廓、管孔组合、穿孔板类型、管间纹孔式、导管-射线间纹孔式及木射线高度均表现出中华木兰较为原始的特点;从3种不同驯化阶段的古茶树的进化程度上看,野生型茶树较为原始,栽培型茶树最为进化,过渡型茶树处于两者之间;因此,从中华木兰到野生型茶树、过渡型茶树、栽培型茶树呈现出不断进化的趋势,从解剖学的角度进一步为山茶科的进化过程提供有力依据。Taking Magnolia miocenica and 3 ancient tea plants at different stages of domestication on the same tea mountain as the research object,through the comparative analysis of xylem anatomical features of M.miocenica and 3 ancient tea plants,to explore the differences and connections between M.miocenica with 3 ancient tea plants in secondary xylem anatomy,and then the evolutionary order among 4 tree species was analyzed.The results show that the relatively primitive characteristics of M.miocenica are shown from the outline of vessel,vessel groupings,type of perforation plates,pattern of intervessel pits,pattern of vessel-ray pitting and height of wood ray.From the perspective of the evolution degree of the 3 ancient tea trees in different domestication stages,the Camellia taliensis was relatively primitive,the Camellia assamica tree was the most evolved,and the Camellia taliensis was in between.In general,there was a continuous evolutionary trend from M.miocenica to 3 ancient tea plants,which further provides a strong basis for the evolutionary process of Theaceae from the perspective of anatomy.

关 键 词：中华木兰 木材解剖 宏观构造 微观构造 古茶树 

分 类 号：S781.1[农业科学—木材科学与技术]