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1.
综述了生物活性物质熊果酸的植物资源概况、种类分布和分布差异性.熊果酸在植物中分布很广,其中熊果酸含量较高的植物有:希腊鼠尾草、夹竹桃、迷迭香、西班牙鼠尾草、长春花、六座大山荆芥、小冠薰、长穗薰表草、百里香、苦丁茶、冬季香薄荷、枇杷、枸骨、白花蛇舌草和樱桃肉桂,分别选74.50、43.00、41.00、40.20、37.00、29 20、20 20、19.00、18.80、17.70、16.00、12.30、10.60、10.07和10.00 mg/g.熊果酸主要分布于茶树、果树、药用植物、香草植物及泡桐等其它植物中,熊果酸的分布还存在着品种差异性、植物部位差异性、区域差异性、季节差异性和生长条件差异性等.对熊果酸植物资源分布状况的充分了解,可为生物活性物质熊果酸的可持续研究开发、高值化和规模化利用提供物质基础.  相似文献   

2.
甘西鼠尾草生物学特性及人工栽培技术研究   总被引:3,自引:1,他引:3  
对甘西鼠尾草的药用价值、生物学特性、形态特征、生境分布及栽培技术等方面进行了初步研究,为甘西藏鼠尾草这种常用药用植物资源,在西藏得以开发利用提供了科学理论基础。  相似文献   

3.
神奇小草——鼠尾草   总被引:1,自引:0,他引:1  
鼠尾草为唇形科鼠尾草属多年生草本丛生植物,原产于地中海沿岸及南欧。商业性栽培主要分布在西班牙、意大利、希腊、阿尔巴尼亚及土耳其等国家。现已在我国河南省淇县未来农业示范园“落户”。鼠尾草根系发达,地上部多分枝,丛生,成长的茎近于木质,较矮,一般株高35-40厘米。叶对  相似文献   

4.
芳香植物     
近年来,随着人们生活越来越时尚,高贵淡雅的芳香植物也成为时尚一族追逐的对象。所谓芳香植物,是指兼有药用植物和香料植物共有属性的植物类群。全世界有3000多种,著名的品种有薰衣草、迷迭香、百里香、藿香、荆芥、鼠尾草、牛至、银灰菊等。芳香植物的特点首先是“香”,但不同的芳香植物的香有不同的功能,如法国薰衣草、迷迭香、藿香等,香味比较浓烈,具有提神的作用;而英国薰衣草香味较淡,起到的是宁神的作用;百里香中的一个银边品种,用手揉搓叶片,会闻到一股甜香,非常别致。用芳香植物,特别是薰衣草提炼的天然香料,是许多著名品牌香水的原…  相似文献   

5.
鼠尾草属植物种类繁多,具有优良的园林观赏特性.本试验在南昌地区引进16个品种鼠尾草,建成鼠尾草属植物引种基地与资源圃,进行鼠尾草性状观察,并在此基础上运用层次分析法建立一套适合鼠尾草的综合评价模型,以鼠尾草的观赏性、适应性、生长性作为优良品种选择的主要依据,选择叶色、花色、花期长度等14个性状作为具体评价指标.筛选出适合南昌地区的Ⅰ级鼠尾草4种,Ⅱ级鼠尾草6种,Ⅲ级鼠尾草4种,Ⅳ级鼠尾草2种,为鼠尾草在南昌园林绿化中的应用提供了理论依据.  相似文献   

6.
采用野外实地踏查及样地调查方法,对大兴安岭地区野生杜香植物资源的种类、分布情况进行了调查。结果表明:杜香在大兴安岭地区分布密集,高纬度、高海拔地区分布面积大,常为单优势的大面积群落。大兴安岭地区杜香资源丰富,且具有较高的经济价值和医药价值,对杜香资源进行合理开发利用,可促进当地的经济发展。  相似文献   

7.
百里香属植物资源的综合开发利用   总被引:10,自引:0,他引:10  
百里香属植物资源的综合开发利用杨鸿佑,杨奇志(辽宁省农业区划研究所110034)(辽宁大学)1百里香属的形态特征及本省分布百里香属(ThymusL。)植物,呈小灌木状,具匍匐茎和发育茎,根系发达。自然生长成为优势群落状态,密布地表的特点。植株高仅5~...  相似文献   

8.
对福建省尤溪九阜山省级自然保护区野生油脂植物资源进一步调查,发现原有文献未报道的野生油脂植物资源共有39科,53属,60种3变种,现予增补。增补的野生油脂植物商业开发利用价值较大的种类有苎麻、香叶树、毛黑壳楠、黄丹木姜子、枫香、西川朴、白背叶、东南野桐、厚叶厚皮香、黄蜀葵、山菅等。列出了增补的每种野生油脂植物的科名、中名、学名、习性、产油部位、含油率、生境与分布海拔,并进一步提出开发利用建议。  相似文献   

9.
大亮子河国家森林公园资源植物及其区系特征   总被引:1,自引:0,他引:1  
在调查和分类的基础上,发现大亮子河国家森林公园共有资源植物454种,分别属于245属、73科。通过对资源植物的优势类群、科、属的区系成分的分析,结果表明:大亮子河国家森林公园资源植物(1))植物多样性比较丰富;(2肮势类群明显;(3)植物属的区系成分复杂多样;(4)各地理成分的优势程度在科、属水平上呈现出明显差异性;(5)单种分布的植物种类较多;(6)保留有古老、原始成分。  相似文献   

10.
中国梅花种质资源及园林应用   总被引:1,自引:0,他引:1  
中国梅花种质资源丰富,在整个梅自然分布范围内,形成总体连续和局部间断格局。川、黔、滇、藏交界的横断山区和云贵高原一带是梅的自然分布中心。梅花种类繁多,不同品种类型在韵、姿、色、香等方面具有独特自然美和丰富的多样性特征,使之成为中国园林中不可或缺的植物造景材料之一。现代园林造景中应借鉴和发扬古典园林中梅花造景的优良传统及其艺术手法与园林要素结合,因地制宜合理运用,形成令人赏心悦目的幽雅景观。  相似文献   

11.
Several extracts of Origanum dictamnus, an endemic plant of Greece growing only in the island of Crete and the bioassay-directed isolated ursolic acid, were tested in vitro against the P388 (murine leukemia) and the human bronchial epidermoid cancer NSCLC-N6 (non small cell lung cancer) cell lines. Both the initial dichloromethane extract and the isolated from it ursolic acid exhibited cytotoxic activity. Ursolic acid was also tested in vivo, on murine ascite leukemia P388, where it exhibited at a dose of 50 mg/kg a marginal antileukemic activity.  相似文献   

12.
Shade tolerance, plastic phenotypic response to light and sensitivity to photoinhibition were studied in holly (Ilex aquifolium L.) seedlings transported from the field to a greenhouse and in adult trees in the field. All plants were growing in, or originated from, continental Mediterranean sites in central Spain. Seedlings tolerated moderate but not deep shade. Mortality was high and growth reduced in 1% sunlight. Survival was maximal in 12% sunlight and minimal in full sunlight, although the relative growth rate of the seedlings surviving in high light was similar to that of plants in moderate shade. Maximum photochemical efficiency at predawn was significantly lower in sun plants than in shade plants in the field, revealing chronic photoinhibition that was most pronounced in winter. Plasticity in response to available light varied according to the variable studied, being low for photosynthetic capacity and stomatal conductance, and high for specific leaf area, root:shoot ratio and leaf area ratio, particularly in seedlings. Differences in water relations and hydraulic features between sun and shade plants in the field were marginal. High water potential at the turgor loss point of field-grown plants suggested that holly is sensitive to drought during both the seedling and the adult stage. Low relative growth rates in both high and low light with low physiological plasticity in response to light indicate the existence of a stress-tolerance mechanism. We conclude that holly is a facultative understory plant in areas of oceanic and relatively mild climate, but an obligate understory plant in dry continental areas such as the study site. The impact of abandonment of traditional management practices and climate change on these Mediterranean populations is discussed.  相似文献   

13.
夏枯草采收时期对果穗与种子质量的影响   总被引:1,自引:0,他引:1  
以夏枯草果穗成熟度(发黄程度)为采收指标,分6个采收期,分别测定其果穗熊果酸含量、种子千粒重与发芽率,并进行对比.结果表明:采收期对夏枯草果穗与种子质量存在明显的影响,熊果酸含量、种子千粒重和发芽率均随果穗成熟度的增加而提高,至果穗全黄时达最大值,果穗全黄7 d后采收,熊果酸含量下降明显,千粒重与发芽率无明显变化.  相似文献   

14.
采用薄层扫描法对车前草、夏枯草、山茱萸中熊果酸的含量进行了测定, 其TLC测定条件为用环己烷-氯仿-乙酸乙酯(20 5 8) 作展开剂; 用10%H2SO4乙酸溶液作显色剂。测定结果表明: 3种植物中, 以夏枯草的熊果酸含量最高, 达0 812 %, 车前草的熊果酸含量最低, 为0 516 %, 前者是后者的1 57倍。该方法简便、快速、准确、可靠, 回收率高达96 1 %。  相似文献   

15.
Bianco J  Dalstein L 《Tree physiology》1999,19(12):787-791
Ozone pollution was analyzed in arolla pine (Pinus cembra L.) forests growing over two mountain ranges located in southern France by using specific ozone-sensitive tobacco plants as bio-indicators and a physico-chemical analyzer. Concentrations of abscisic acid (ABA) were determined in needles of healthy and declining trees in a massif with a declining forest and in a massif with a healthier forest. In addition, ABA was quantified in needles of trees exposed to either charcoal-filtered air or unfiltered air supplemented with ozone in open-top chambers located at the Col du Donon. The concentration of ABA in needles of injured trees increased when the trees were exposed to ozone either under field conditions or in open-top chambers; however, the difference in ABA concentration between control and ozone-exposed needles was less in the open-top chambers, where ozone was the sole variable, than in the field. The results are discussed in the context of the effects of ozone on plant water relations and hormone-mediated cell defense.  相似文献   

16.
通过对常山县全县范围内各种有价值的胡柚变异单株进行筛选,选出23个预选母株,经对母株观察评价,选出品质较好的10个初选单株进行高接换种并进行观察鉴定,经果品大小、可溶性固形物、可食率、酸度、口味等指标的综合评价,最终选出7个单株5个性状优良的胡柚初选新品种,并建立了子代鉴定圃。  相似文献   

17.
植物蛋白酶抑制剂及其在林木抗虫基因工程中的应用   总被引:8,自引:0,他引:8  
刘会香  张星耀 《林业科学》2005,41(3):148-157
植物蛋白酶抑制剂是除Bt之外又一个愈来愈研究较多的抗虫基因资源,其分布广泛,在豆科、茄科、禾本科、葫芦科及十字花科等植物中存在较多。植物蛋白酶抑制剂抗虫基因主要通过2种途径获得并在多种植物中进行转化,获得抗虫转基因植株。植物蛋白酶抑制剂在林木抗虫基因工程中的应用刚刚起步。本文在总结我国林木病虫害防治现状的基础上,阐述植物蛋白酶抑制剂在林木抗虫基因工程中的应用前景,同时也探讨植物蛋白酶抑制剂在林木害虫防治应用中存在的问题及解决途径。  相似文献   

18.
通过实地调查、样地分析,对云霄县的木本植物资源开展了调查.结果表明:云霄县境内有木本植物114科378属832种,其中野生木本植物有89科260属601种,栽培的木本植物73科173属277种,优势科为蔷薇科、茜草科、豆科等26科,优势属为以悬钩子属、冬青属、榕属等41属.乔木315种、灌木364种、木质藤本128种、...  相似文献   

19.
The structural modification of ursolic acid by an endophytic fungus Pestalotiopsis microspora, isolated from medicinal plant Huperzia serrata was reported for the first time. The structure diversity was very important for the SAR study of ursolic acid and its derivatives. Incubation of ursolic acid 1 with P. microspora afforded four metabolites: 3-oxo-15α, 30-dihydroxy-urs-12-en-28-oic acid (2), 3β, 15α-dihydroxy-urs-12-en-28-oic acid (3), 3β, 15α, 30- trihydroxy-urs-12-en-28-oic acid (4) and 3,4-seco-ursan-4,30-dihydroxy-12-en-3,28-dioic acid (5). All products were new compounds and their structures elucidation was mainly based on the spectroscopic data.  相似文献   

20.
园林绿化中植物配置的多样性问题   总被引:1,自引:0,他引:1  
对园林绿化植物配置中存在的多样性问题进行了论述,从增加绿化植物种类,加强彩叶树种、开花树种、抗性树种以及攀缘植物和地被植物的应用等方面总结了园林植物配置中应当注意的问题,并进一步分析了园林绿化中丰富植物品种的途径。  相似文献   

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