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中国农学通报 ›› 2023, Vol. 39 ›› Issue (22): 72-76.doi: 10.11924/j.issn.1000-6850.casb2023-0161

• 林学·园艺·园林 • 上一篇    下一篇

黄瑞香叶芽与花芽分化的形态学研究

石雅倩1(), 闫芳2,3, 陈小爱2, 吕彪1,2(), 张春云4, 王海平4, 王建东4, 徐涛2, 张春梅2, 陈叶2   

  1. 1 甘肃农业大学资源与环境学院,兰州 730000
    2 河西学院祖师麻原植物应用技术研究所,甘肃张掖 734000
    3 甘肃省河西走廊特色资源利用重点实验室,甘肃张掖 734000
    4 甘肃泰康制药有限责任公司,甘肃武威 733000
  • 收稿日期:2023-02-28 修回日期:2023-04-18 出版日期:2023-08-05 发布日期:2023-07-28
  • 通讯作者: 吕彪,男,1964年出生,甘肃张掖人,本科,教授,主要从事土壤与植物营养学教学与研究工作。通信地址:730000 甘肃省兰州安宁区营门村一号 甘肃农业大学资源与环境学院,E-mail:lvbiao6123@163.com
  • 作者简介:

    石雅倩,女,1994年出生,河北保定人,硕士研究生,研究方向:资源利用与植物保护。通信地址:730000 甘肃省兰州安宁区营门村一号 甘肃农业大学资源与环境学院,E-mail:

  • 基金资助:
    甘肃省高等学校产业支撑计划项目“祖师麻药材绿色高效栽培技术研究与示范推广”(2021CYZC-58); 甘肃省技术创新引导计划项目“祁连山经济型灌木唐古特瑞香生态种植技术研究与推广”(22CX8NA071); 大学生创新训练计划项目“经济型灌木黄瑞香人工催芽关键技术研究”(项S202210740092(项S202210740092)

A Morphology Study on Leaf Bud Formation and Flower Bud Differentiation of Daphne giraldii

SHI Yaqian1(), YAN Fang2,3, CHEN Xiaoai2, LV Biao1,2(), ZHANG Chunyun4, WANG Haiping4, WANG Jiandong4, XU Tao2, ZHANG Chunmei2, CHEN Ye2   

  1. 1 College of Resources and Environment, Gansu Agricultural University, Lanzhou 730000
    2 Applied Technology Research Institute on Original Plants of Zushima of Hexi University, Zhangye, Gansu 734000
    3 Key Laboratory of Hexi Corridor Resources Utilization of Gansu, Zhangye, Gansu 734000
    4 Taikang Pharmaceutical Limited Liability Company of Gansu Province, Wuwei, Gansu 733000
  • Received:2023-02-28 Revised:2023-04-18 Online:2023-08-05 Published:2023-07-28

摘要:

采用石蜡切片和解剖观测技术,对黄瑞香叶芽、花芽发生和花器官分化过程进行研究,明确黄瑞香叶芽生长与花芽分化特征,以期为黄瑞香育种和系统分类研究提供理论依据。结果表明:(1)黄瑞香叶芽分布于老枝条的顶端和两侧,分为顶芽和叶芽,外部有鳞片包被,顶部较凸,托叶并不明显,整个叶芽呈圆锥状。叶芽的叶原基分化期为3月中下旬至4月中旬。(2)黄瑞香花芽分化分为未分化期、分化初期、花序原基分化期、小花原基分化期、花瓣原基分化期、雄蕊原基分化期和雌蕊原基分化期7个时期(4月中旬至5月中旬)。(3)黄瑞香叶芽中心部位抽生新茎(4月中旬),花芽生长于叶芽所抽新茎的中心茎尖顶点部位。(4)内部结构观察显示黄瑞香的新茎抽生与花芽分化时间具有同步性。

关键词: 黄瑞香, 叶芽, 花芽, 花芽分化, 石蜡切片

Abstract:

Using paraffin section and anatomical observation techniques, the process of leaf bud and flower bud initiation and flower organ differentiation of Daphne giraldii was studied, and the characteristics of leaf bud growth and flower bud differentiation of D. giraldii were clarified, so as to provide theoretical basis for D. giraldii breeding and systematic classification research. The results showed that: (1) the leaf buds of D. giraldii were distributed at the top and both sides of the old branches, which were divided into terminal buds and leaf buds. The entire leaf bud was conical in shape with scales covering the outside, the top being convex, and unconspicuous stipules. The leaf primordium differentiation period of leaf buds was from mid-late March to mid-April. (2) The flower bud differentiation of D. giraldii could be divided into 7 stages (mid-April to mid-May) including undifferentiated stage, early stage of differentiation, inflorescence primordium differentiation, floret primordium differentiation, petal primordium differentiation, stamen primordium differentiation, and pistil primordium differentiation. (3) A new stem was sprouted from the center of the leaf bud of D. giraldii (mid-April), and the flower bud grew at the apex of the central stem tip of the new stem from the leaf bud. (4) The observation of internal structure showed that the time of new stem emergence and flower bud differentiation of D. giraldii was synchronous.

Key words: Daphne giraldii, leaf bud, flower bud, flower bud differentiation, paraffin section