湖北农业科学 ›› 2021, Vol. 60 ›› Issue (5): 89-94.doi: 10.14088/j.cnki.issn0439-8114.2021.05.016

• 园艺·特产 • 上一篇    下一篇

不同生长年限独一味的形态组织学研究

鲍新1, 刘琴1, 古锐3, 钟世红1,2   

  1. 1.成都医学院药学院,成都 610500;
    2.西南民族大学药学院,成都 610200;
    3.成都中医药大学民族医药学院,成都 610075
  • 收稿日期:2020-12-07 出版日期:2021-03-10 发布日期:2021-03-22
  • 通讯作者: 钟世红(1980-),女,教授,博士,主要从事中药资源与鉴定的研究工作,(电话)028-85752465(电子信箱)527455247@qq.com。
  • 作者简介:鲍新(1996-),女(蒙古族),内蒙古赤峰人,在读硕士研究生,研究方向为中药鉴定及质量标准研究,(电话)18192738552(电子信箱)704170390@qq.com;
  • 基金资助:
    国家自然科学基金青年项目(81403040); 国家自然科学基金面上项目(82073964); 四川省科技厅重点研发项目(20ZDYF2376); 四川省科技厅扶贫项目(20FPCY0076)

Study on morphology and histology of Lamiophlomis rotata (Benth.) Kudo of different growth years

BAO Xin1, LIU Qin1, GU Rui3, ZHONG Shi-hong1,2   

  1. 1. College of Pharmacy, Chengdu Medical College, Chengdu 610500, China;
    2. College of Pharmacy, Southwest Minzu University, Chengdu 610200, China;
    3. College of National Medicine, Chengdu Universitiy of Traditional Chinese Medicine, Chengdu 610075, China
  • Received:2020-12-07 Online:2021-03-10 Published:2021-03-22

摘要: 通过比较1~3年生栽培独一味[Lamiophlomis rotata (Benth.) Kudo]及不同大小等级野生独一味的外观性状和组织构造,寻找鉴别不同生长年限独一味的形态学依据,为独一味的种群结构研究提供参考。采用根系扫描仪获得独一味根长、表面积、体积等根系参数;采用常规显微鉴定方法对独一味地上、地下部分分别观察。结果表明,独一味一年生根无分枝,二年生根分枝0~2个,三年生根分枝2~5个,偶见枯心。独一味一年生叶中脉维管束1个,二年生叶中脉维管束1~2个,三年生叶中脉维管束1~3个,呈“U”形排列;一年生叶中脉上表皮以内无厚角组织,二年生叶中脉上表皮以下偶见厚角细胞1~2列,三年生叶中脉上表皮以内厚角细胞2~3列。根横切面木质部导管排列方式不同,1~2年生根导管单个散在或数个成束,呈扁平层状排列,一年生根导管排列紧密,二年生根导管排列较稀疏,三年生根导管数十个成束切向连续排列成与形成层平行的环。野生独一味小、中、大等级植株表现出与1~3年生栽培独一味相似规律。不同生长年限独一味的外观性状、组织构造均存在一定差异,可为独一味的生长年限鉴别提供参考。

关键词: 独一味[Lamiophlomis rotata (Benth.) Kudo], 生长年限, 形态组织学特征

Abstract: In order to find the basis for the identification of different growth years, provide reference for the study of population structure of Lamiophlomis rotata (Benth.) Kudo, the experiment was conducted to observe and compare the appearance and tissue structure of Lamiophlomis rotata (Benth.) Kudo for 1~3 years cultivated plants and different size levels wild plants. The root parameters such as root length, surface area and volume were obtained by root scanner, the aboveground and underground parts were observed by microscopic identification. The results show that, 1-year-old root have no branches, 2-year-old roots have 0~2 branches, 3-year-old roots have 2~5 branches, and occasionally withered heart. There are 1 midvein vascular bundle in 1-year-old leaves, 1~2 vascular bundles in 2-year-old leaves, and 1~3 vascular bundles in 3-year-old leaves, which are arranged in the shape of “U”. There is no thick horn tissue within the upper epidermis in the midrib of 1-year-old leaves, 1~2 rows of thick horn cells are occasionally seen below the upper epidermis of the midrib of 2-year-old leaves, and 2~3 rows of thick horn cells are found in the upper epidermis of 3-year-old leaves. The arrangement of xylem ducts in root cross section is different, 1-year-old and 2-year-old root ducts are scattered in single or several bundles, in a flat layer arrangement, 1-year-old ducts are compact, 2-year-old vessels are sparse, and dozens of 3-year-old ducts are cut into bundles and arranged continuously into rings parallel to the cambium. The small, medium and large grade plants in the field samples showed a similar pattern to that of 1~3-year-old cultivation. There are some differences in appearance, tissue structure and component content among different growth years, which can provide reference for the identification of growth years.

Key words: Lamiophlomis rotata (Benth.) Kudo, growth years, morphological and histological characteristics

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