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杨马进, 严贤春, 罗建勋, 兰发正, 文艳. 曼地亚红豆杉雌雄株枝条与叶片形态特性研究[J]. 四川林业科技, 2016, 37(1): 37-40. DOI: 10.16779/j.cnki.1003-5508.2016.01.007
引用本文: 杨马进, 严贤春, 罗建勋, 兰发正, 文艳. 曼地亚红豆杉雌雄株枝条与叶片形态特性研究[J]. 四川林业科技, 2016, 37(1): 37-40. DOI: 10.16779/j.cnki.1003-5508.2016.01.007
YANG Ma-jin, YAN Xian-chun, LUO Jian-xun, LAN Fa-zheng, WEN Yan. Researches on the Morphological Characteristics of Branches and Leaves Between Male and Female Taxus media[J]. Journal of Sichuan Forestry Science and Technology, 2016, 37(1): 37-40. DOI: 10.16779/j.cnki.1003-5508.2016.01.007
Citation: YANG Ma-jin, YAN Xian-chun, LUO Jian-xun, LAN Fa-zheng, WEN Yan. Researches on the Morphological Characteristics of Branches and Leaves Between Male and Female Taxus media[J]. Journal of Sichuan Forestry Science and Technology, 2016, 37(1): 37-40. DOI: 10.16779/j.cnki.1003-5508.2016.01.007

曼地亚红豆杉雌雄株枝条与叶片形态特性研究

Researches on the Morphological Characteristics of Branches and Leaves Between Male and Female Taxus media

  • 摘要: 曼地亚红豆杉(Taxus media)雌雄异株,树形美观,全株皆可提取紫杉醇,具有较高的药用和观赏价值。本文对四川洪雅地区曼地亚红豆杉2种雌株和1个无性系雄株的枝条和叶片形态特征进行了研究,结果表明:①枝条形态特征可作为雌雄性鉴定的标准之一:2个无性系雌株小枝近轮生,雌株1号节间长25 cm左右,每节分枝数为4个~5个;雌株2号较雌株1号的节间较短,仅为7 cm~8 cm,每节有7个~8个分枝;雄株1号侧枝排列在同一平面上,节间仅为3 cm~5 cm,每节有2个~3个分枝。②与2种曼地亚红豆杉雌株相比,雄株1号叶片更狭长,叶长、叶面积、叶形指数均大于2种雌株,而叶宽显著小于雌株。③雌株2号的单片叶鲜重量、干重量和比叶重量均低于雌株1号和雄株1号。综上所述,经过近20年的引种驯化,四川洪雅3种不同曼地亚红豆杉雌雄株的枝条和叶片形态特征存在显著差异,通过枝条和叶片形态特征对曼地亚红豆杉雌雄性进行鉴别,有利于生产栽植中的植株性别配置。

     

    Abstract: Taxus media(TM),a plant of dioecism,had very high medicinal and ornamental value for the beautiful figure and the high contents of paclitaxel in all its parts.The research was conducted on analyzing the morphological characteristics of branches and leaves among one male and two female plants of TM in Hongya,Sichuan province.The results showed that:①The morphological characteristics of branches could be used as the important appraisal standard to distinguish male and female plants.Branchlets of both two female plants were nearly verticillate.The internodal length of the No.1 was about 25 cm and the number of branches was 4~5 per node.The internodal length of No.2 was only 7 cm~8 cm and the number of branches was 7~8 per node.Branches of the male are distributed on the same plane.The internodal length was only 3 cm to 5 cm and the number of branches was 2 or 3 per node.②As compared with the two female plants,the male leaf of TM was much narrower,while leaf length,leaf area and leaf index of the male plants were larger.③The fresh weight,dry weight and specific weight per leaf of the No.2 female plant were lower than those of the No.1 female plant and the No.1 male.In conclusion,there were three different types of male and female TM in Hongya,Sichuan province,after nearly 20 years of introduction and domestication,while significant differences of morphological characteristics were found.The morphological characteristics could be used to identify the male and female plants of TM,which could have great practical value in production practice.

     

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