摘要
观察了山西25个产地的野生黄芩茎的横、纵切面结构及叶的横切面结构,比较了茎的皮层厚度、韧皮部厚度、木质部厚度、大导管半径和叶的叶片厚度、主脉直径、栅栏组织厚度、海绵组织厚度,分析了叶的叶脉突起度、栅海比(P/S)、细胞结构紧密度(CTR)以及细胞结构疏松度(SR)等指标。结果表明:山西不同产地野生黄芩的茎多为近圆形,少数为四棱形且凸起形棱角与黄芩的抗寒性相关;黄芩叶为异面叶,其机械组织发达;叶的P/S、CTR和SR值可以作为山西野生黄芩生态类型的划分指标;山西野生黄芩对干旱环境具有较强的适应性。
The author observed the anatomical structure （ transversal and longitudinal structure） of stem and leaf of wild Scutellaria baicalensis samples from 25 habitats of Shanxi, compared the cortex thickness, phloem thickness, xylem thickness, and big duct radius of stem, as well as the leaf thickness, main vein diameter, palisade tissue thickness and spongy tissue thick- ness of leaf, and analyzed the vein protuberant degree, palisade tissue-spongy tissue ratio （P/S）, cellular structural compactness （CTR）, and cellular structural porosity （SR） of leaf. The results showed that the stem of wild S. baicalensis from different habi- tats of Shanxi was mostly near circular, and less four prismatic, and the protuberant corner angle was related to its cold resistance. The leaf of wild S. baicalensis was different between its two sides, and it possessed a developed mechanical tissue. The P/S, CTR and SR of leaf could be used as the indexes for the division of ecotype of wild S. baicalensis in Shanxi. The wild S. baicalensis from Shanxi had a stronger adaptation to arid environment.
作者
潘春莉
郝建平
王秋宝
PAN Chun-li HAO Jian-ping WANG Qiu-bao(School of Life Science, Shanxi University, Taiyuan 030006, Chin)
出处
《江西农业学报》
CAS
2017年第5期46-52,共7页
Acta Agriculturae Jiangxi
基金
山西省科技攻关计划(振东专项)(2014ZD0503)
关键词
山西
野生黄芩
茎
叶
解剖结构
生态环境
Shanxi
Wild Scutellaria baicalensis
Stem
Leaf
Anatomical structure
Ecological environment
