云南松解剖特征及其对外界刺激的响应  

Anatomical characteristics of resin ducts and its response to extemal stimuli in Pinus yunnanensis

作　　者：熊晖[1] 陆雪佳 杨文云[1] 黎思国 高成杰[1] 刘方炎[1] 李昆[1] XIONG Hui;LU Xuejia;YANG Wenyun;LI Siguo;CAO Chengjie;LIU Fangyan;LI Kun(Research Institute of Resource Insects,Chinese Academy of Forestry,Kunming 650224,Yunnan,China;Meiziqing Forest Farm of Shuangbai County,Shuangbai 675106,Yunnan,China)

机构地区：[1]中国林业科学研究院资源昆虫研究所,云南昆明650224 [2]云南省双柏县梅子箐林场,云南双柏675106

出　　处：《浙江农林大学学报》2018年第3期483-489,共7页Journal of Zhejiang A&F University

基　　金：国家林业公益性行业科研专项(201304202)

摘　　要：松脂是松属Pinus植物分泌的一种次生代谢产物,具有较高的经济价值和生态价值,主要储藏在松属植物针叶、树干木质部和韧皮部的树脂道系统内。开展云南松Pinus yunnanensis产脂量与其解剖学特征之间的关系研究,有利于云南松高产脂优树的选育和高产林定向培育技术体系的建立。对云南松产脂量与针叶、树干解剖特征之间的相关关系进行了研究,并比较分析了高、低产脂量云南松针叶和树干解剖特征的差异。结果表明:高产脂量云南松针叶树脂道个数、针叶分泌细胞个数、树干韧皮部树脂道个数、木质部树脂道个数和木质部分泌细胞个数极显著高于低产脂量云南松。随着针叶树脂道个数、针叶分泌细胞个数、树干韧皮部树脂道个数、木质部树脂道个数和木质部分泌细胞个数的增加,云南松的产脂量也不断增加(P<0.01)。主成分分析中木质部树脂道个数的载荷值最大,表明云南松树干木质部树脂道与其产脂量关系最为密切。树干木质部树脂道个数可作为选育高产脂云南松的一个重要指标。Oleoresin is a secondary metabolite with a high economic and ecological value, and it is mainly stored in the resin channel system of needles and trunk xylem and phloem of the genus Pinus. Study on the re-lationship between oleoresin yield and their anatomical characteristics is conducive to selective breeding of su-perior tree with high-yielding oleoresin of Pinus yunnauensis and establishment of directional cultivation tech-nology system of high-yielding forest. The relationship between oleoresin and the anatomical characteristics of needles and trunks was studied, and the differences in the anatomical characteristics of the needles and trunks of high-and low-yielding trees were compared and analyzed. The results showed that, the number of resin canals and secrete cells in the needles and trunks of high-yielding oleoresin pines were significantly higher than those of low-yielding oleoresin pines. With the increase of the number of resin canals in the needles and trunks, the oleoresin yield was also increased （P〈0.O1）. In addition, the loading of the number of resin canal in xylem was the largest in the principal component analysis. The result implied that the number of resin canal in xylem could be proposed as an important indicator for breeding high-yielding oleoresin P. yunnanensis.

关 键 词：林木育种学 云南松 产脂量 解剖特征 

分 类 号：S722.3[农业科学—林木遗传育种] S791.257[农业科学—林学]