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51.
与复方丹参注射液(丹参+三七)比较,探讨两种滇产鼠尾草复方注射液。即复方滇丹参(滇丹参+三七)和复方甘西鼠尾(甘西鼠尾+三七)对大鼠在体心肌缺血再灌注损伤的保护作用。采用在体缺血再灌注模型,缺血30min复灌60min。实验过程中用II导联记录心电图ST段和心率变化,实验后测定心室梗塞面积。结果:这两种复方鼠尾草注射液能显著降低在体心肌缺血和再灌注过程中ST段抬高水平。轻度加快缺血再灌注过程心率,相似于复方丹参;这两种鼠尾草复方注射液均能明显减少心室梗塞面积。这两种滇产鼠尾草复方注射液均有较好的抗心肌缺血再灌注损伤作用,与复方丹参注射液相似。 相似文献
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海南木莲叶挥发油化学成分研究 总被引:3,自引:0,他引:3
目的:分析海南木莲叶的挥发油成分。方法:采用水蒸气法提取挥发油,气相色谱-质谱-计算机联用技术分析。结果:共鉴定出49种化合物,占挥发油总量的99.99%,其中主要成分是橙花叔醇(16.44%);3,7-二甲基-2,6-辛二烯-1-醇(5.27%);3,7-二甲基1,6-辛二烯-3-醇(5.12%);α-丁香烯(4.97%)和丁香烯(4.48%)。 相似文献
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Yi-Feng Yao Subir Bera Yu-Fei Wang Cheng-Sen Li 《植物学报(英文版)》2006,48(11):1266-1273
In the present study, nectar and pollen sources for honeybee (Apls cerana cerana Fabr.) were studied in Qlnglan mangrove area, Hainan Island, China, based on microscopic analysis of honey and pollen load (corblcular and gut contents) from honeybees collected In October and November 2004. Qualitative and quantitative melittopalynologlcal analysis of the natural honey sample showed that the honey is of unlfloral type with Mimosa pudlca L. (Mlmosaceae) as the predominant (89.14%) source of nectar and pollen for A. cerana cerana In October. Members of Araceae are an Important minor (3%-15%) pollen type, whereas those of Arecaceae are a minor (〈3%) pollen type. Pollen grains of Nypa fruticans Wurmb., Rhlzophora spp., Excoecarla agallocha L., Lumnitzera spp., Brugulera spp., Kandella candel Druce, and Ceriops tagal (Perr.) C. B. Rob. are among the notable mangrove texa growing In Qinglan mangrove area recorded as minor taxa In the honey. The absolute pollen count (I.e. the number of pollen grains/10 g honey sample) suggests that the honey belongs to Group V (〉1 000 000). Pollen analysis from the corblcular and gut contents of A. cerana cerana revealed the highest representation (95.60%) of members of Sonneratia spp. (Sonneratlaceae), followed by Bruguiera spp. (Rhizophoraceae), Euphorblaceae, Poaceae, Fabaceae, Arecaceae, Araceae, Anacardlaceae, and Rublaceae. Of these plants, those belonging to Sonneratla plants are the most Important nectar and pollen sources for A. cerana cerana and are frequently foraged and pollinated by these bees in November. 相似文献
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Yi Ding Run-Guo Zang You-Xu Jiang 《植物学报(英文版)》2006,48(6):642-653
In the present study, we investigated the effect of hillslope gradient on vegetation recovery on abandoned land of shifting cultivation In Hainan Island, south China, by measuring community composition and structure of 25-year-old secondary forest fallows along a hillslope gradient (up-, middle-, and down-slope position). A total of 49 733 free-standing woody plant stems higher than 10 cm and belonging to 170 species, 112 genera, and 57 families was found in the three l-hm2 investigation plots. Stem density was highest in the down-slope stand and lowest in the up-slope stand. Species richness and the Shannon-Wiener Index were both highest in the middle-slope stand, and lower In the down-slope and up-slope stands. The recovery forest fallows on different hiUslope positions were all dominated by a few species. The five most abundant species accounted for 70.1%, 58.8%, and 72.9% of total stem densities in stands in the up-, middle-, and down-slope positions, respectively. The five species with the greatest basal areas accounted for 74.5%, 84.3%, and 74.7% of total stem basal area for the up-, middle-, and down-slope positions, respectively. The number of low-density species (stem abundance less than five) Increased from the up-slope position downward. Of the nine local common species among three different functional groups, the short-lived pioneer species dominated the up-slope position, but long-lived pioneer species dominated the middle- and down-slope positions. The climax species of primary tropical lowland rain forest was found in the downslope position. Both the mean diameter at breast height (DBH) and mean height of the trees Increased with decreasing hillslope gradient. The stem density and basal area in different size classes were significantly different in stands In different slope positions. Our results indicated that the rate of secondary succession varies, even over small spatial scales caused by the hlllslope gradient, in early vegetation recovery. 相似文献
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在苗期应用自然诱发鉴定法对海南普通野生稻(Oryza rufipogonGriff.)41个居群的410份材料进行了2年的稻瘟病(rice blast)抗性鉴定,结果表明:经过初鉴和复鉴,410份海南普通野生稻中有21份表现高抗,占5.1%,117份表现抗,占28.5%,说明海南普通野生稻具有较好的稻瘟病抗性。 相似文献
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利用扫描电子显微镜对东亚特有植物黄三七(Souliea vaginata(Maxim.) Franch.)茎的次生木质部离析材料进行了观察,结果表明,黄三七茎次生木质部中的导管分子端壁上具网状穿孔板(麻黄式穿孔板)、梯状穿孔板、网状-梯状混合穿孔板、网状-梯状-单穿孔混合型穿孔板、梯状-单穿孔混合型穿孔板及单穿孔板,同时也观察到了端壁多穿孔板和侧壁穿孔板,并对不同类型穿孔板中纹孔膜的残留也进行了观察。其中,网状穿孔板、各种过渡类型的穿孔板均为毛茛科植物中首次报道。根据观察结果,对导管分子穿孔板的演化及黄三七属植物的系统位置进行了分析。 相似文献
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