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中国农学通报 ›› 2022, Vol. 38 ›› Issue (19): 47-53.doi: 10.11924/j.issn.1000-6850.casb2021-0743

所属专题: 生物技术 园艺

• 林学·园艺·园林 • 上一篇    下一篇

广西野生茶树叶片横切结构及特性分析

邓慧群1(), 全程1, 张炎生2(), 潘林艳3, 韦柳花1   

  1. 1广西壮族自治区茶叶科学研究所,广西桂林 541004
    2梧州市食品药品检验所,广西梧州 543000
    3梧州高级中学,广西梧州 543000
  • 收稿日期:2021-08-05 修回日期:2022-01-07 出版日期:2022-07-05 发布日期:2022-07-13
  • 通讯作者: 张炎生
  • 作者简介:邓慧群,女,1981年出生,高级农业经济师,本科,研究方向为茶树品种选育与栽培管理。E-mail: 445744283@qq.com
  • 基金资助:
    广西科技重大专项“适制六堡茶树良种引进适应性研究与示范”(桂科AA20302018-3);广西科技基地和人才专项“广西茶树核心种质资源库及共享服务平台建设”(桂科AD18281068);国家现代农业产业技术体系广西茶叶创新团队(ntcytxgxcxtd);广西科技计划项目“科技特派员乡村‘科技富民’茶树优良新品种推广示范”(桂科AD20297116)

Transection Structure and Characteristics of Wild Tea Tree Leaves in Guangxi

DENG Huiqun1(), QUAN Cheng1, ZHANG Yansheng2(), PAN Linyan3, WEI Liuhua1   

  1. 1Tea Science and Research Institute of Guangxi, Guilin, Guangxi 541004
    2Wuzhou Testing Institute for Food and Drug Control, Wuzhou, Guangxi 543000
    3Wuzhou Senior High School, Wuzhou, Guangxi 543000
  • Received:2021-08-05 Revised:2022-01-07 Online:2022-07-05 Published:2022-07-13
  • Contact: ZHANG Yansheng

摘要:

对广西野生茶树叶片进行解剖,从解剖学的角度对它们的抗旱、抗寒以及抗病虫害的特性进行比较分析,以期为广西茶树资源的快速鉴定与新品种选育提供依据。运用改良石蜡切片方法制片,光学显微镜观察,对广西区内7个县(区)的21个野生茶树株系的叶片进行解剖观察与比较。叶脉、叶片、上表皮角质层、海绵组织和栅栏组织等的厚度均因株系的不同而异。叶脉与叶片厚度的比值为1.62~7.06,上表皮角质层厚度为1.63~4.21 μm,上表皮细胞厚度为14.83~30.17 μm,上表皮细胞厚度与海绵组织厚度的比值为0.08~0.21,栅栏组织与海绵组织厚度的比值为0.31~1.04。综合抗性最强的是六堡01和六堡02,其次是白牛01、开山茶01和开山茶02,它们均具有较强的抗旱、抗寒和抗病虫害能力。

关键词: 野生茶树, 叶片, 横切结构, 特征分析, 广西

Abstract:

The leaves of wild tea trees in Guangxi were dissected, and their characteristics of drought resistance, cold resistance, and resistance to disease and insect pests were analyzed from the perspective of anatomy, so as to provide a feasible basis for rapid identification of resources and new variety breeding of tea tree in Guangxi. The leaves of 21 wild tea strains in seven counties (districts) of Guangxi were studied by using modified paraffin sectioned method and observed under optical microscope. The thickness of leaf vein, leaf, epidermal cell cuticle, spongy tissue and palisade tissue varied with different strains. The ratio of leaf vein thickness to leaf thickness was 1.62-7.06, the epidermal cell cuticle thickness was 1.63-4.21 μm, the epidermal cell thickness was 14.83-30.17 μm, the ratio of epidermal cell thickness to spongy tissue thickness was 0.08-0.21, and the ratio of the palisade tissue thickness to spongy tissue thickness was 0.31-1.04. Liubao 01 and Liubao 02 had the strongest comprehensive resistance, followed by Bainiu 01, Kaishancha 01 and Kaishancha 02, which all had strong drought resistance, cold resistance and resistance to disease and insect pests.

Key words: wild tea tree, leaf, transection structure, characteristic analysis, Guangxi

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