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云南杜鹃属两新变种 总被引:1,自引:0,他引:1
光叶香缅树 新变种图 1 RhododendronhancockiiHemsl.var.longisepalumR .C .FangetC .H .YangRhododendrontutcheraeHemsl.&Wilsonvar.glabrifoliumL .M .Gao&D .Z .Li,var.nov .Atyporeceditlaminaglabra ,petiologlabro ,pedicelloglabrovelsparsimpubescentibus.Yunnan (云南 ) :Pingbian (屏边 ) ,Dawei… 相似文献
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本文报道了采自云南的1个中国种子植物新记录科、2个新记录属、30个新记录种(含种下等级, 下同)。中国新记录科为兜帽果科(Aptandraceae) (云南迦楼果Anacolosa griffithii); 中国新记录属为假钓樟属(Pottingeria) (假钓樟P. acuminata)和心萼藤属(Cordisepalum) (小花心萼藤C. phalanthopetalum); 中国新记录种为: 短萼火焰花(Phlogacanthus gomezii)、滇缅叉柱花(Staurogyne shanica)、大果大风子(Hydnocarpus macrocarpus)、厚叶藤春(Alphonsea ventricosa)、长果细基丸(Huberantha jenkinsii)、盈江野独活(Miliusa chantaburiana)、异株野独活(M. dioeca)、滇缅凤仙花(Impatiens andersonii)、红萼藤黄(Garcinia lanceifolia)、盈江五桠果(Dillenia parviflora)、盈江柳安(Parashorea buchananii)、缅甸锥(Castanopsis birmanica)、缅甸银叶树(Heritiera burmensis)、红花柊叶(Phrynium pubinerve)、滇印石豆兰(Bulbophyllum obrienianum)、易武石豆兰(B. sinhoense)、盈江石斛(Dendrobium dantaniense)、舌唇石斛(D. parcum)、黄火烧兰(Epipactis flava)、大茎美冠兰(Eulophia macrobulbon)、滇印小囊兰(Micropera mannii)、婆罗洲香荚兰(Vanilla borneensis)、簇花叶下珠(Phyllanthus discofractus)、奇异珠子木(P. mirabilis)、微毛杜茎山(Maesa tomentella)、皱叶清风藤(Sabia wardii)、大萼臭椿(Ailanthus integrifolia subsp. calycina)、滇缅荛花(Wikstroemia floribunda)、红丝姜花(Hedychium gardnerianum)、大苞姜(Monolophus linearis)。凭证标本存放于中国科学院西双版纳热带植物园标本馆(HITBC)、中国科学院植物研究所标本馆(PE)、中国科学院昆明植物研究所标本馆(KUN)和厦门大学标本馆(AU)。 相似文献
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小花组Sect.Micromoranthe 勐崙石豆兰 新种 图1,1—2 Bulbopyllum menglunense Z.H.Tsi et Y.Z.Ma,sp.nov. Haec species hahitu affinis B.hastato Tang et Wang,sed differt labello inambitu structuraque. Planta minor.Rhizomata repentia,teretia,ca.1mm in diametro;radici-bus e basi pseudobulbi oriundis,2—3 in fasciculos aggregatis.Pseudobulbi in 相似文献
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<正> 小乔木。树高4—8米,嫩枝被灰黄色至黄褐色疏长毛。芽微小,倒卵形,密被灰黄色长柔毛。叶革质,狭椭圆形或披针状椭圆形,长(7)10—14厘米,宽(2)3—4厘米,先端尾状渐尖,尖尾长1—2.5厘米,基部阔楔形,表面无毛,背面沿叶脉上有疏长毛,叶片干后两面密布小瘤凸,叶缘1/2—2/3以上有细锯齿,近基部全缘,叶柄长1—1.5厘米,被疏长毛。花单生枝顶,花柄极短至近无柄,开花时直经3—4(5)厘米,苞片和萼片不分化,8—10枚,外面密被银灰色至灰黄色绢毛,里面无毛,质脆易碎;花辦淡黄白色,倒卵形至阔倒 相似文献
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记述云南窗翅叶蝉属Mileewa Distant5新种:高黎窗翅叶蝉M.gaoligongana Yang et Li,sp.nov.,突头窗翅叶蝉M.exsertocaputa Yanget Meng,sp.nov.,十刺窗翅叶蝉M.decemspina Yanget Li,sp.nov.,四刺窗翅叶蝉M.tetraspina Yang,sp.nov.和八刺窗翅叶蝉M.octospina Yang,sp.nov.。文中详细描述了新种的形态特征,提供了彩色照片,并绘制了雄性外生殖器构造图。所有研究标本均保存在贵州大学昆虫研究所(GUGC)。 相似文献
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Abstract: Using X-ray micro-analysis elemental content and dry weight were measured in single vegetative cells along eight trichomes from a culture of Nostoc calcicola . Nearly all of the variation in the pooled population could be attributed to the variation among trichomes, with coefficients of variation (CV) between 0.2 and 0.7. Within trichomes the CV was 0.10–0.13. Chlorine, sodium, calcium and potassium were the elements that contributed most to the dispersion of the trichomes as shown by canonical variate analysis. These results suggest that there exists an ionic or molecular exchange between cells along the trichome and that the trichome may be regarded as a counterpart to an individual cell in a binary dividing population. 相似文献
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小叶红光树的化学成分 总被引:4,自引:0,他引:4
从小叶红光树枝条中分离获得 8个化合物 ,经光谱测定 ,鉴定了其化学结构分别为花旗松素(1) ,木犀草素 (2 ) ,(+) 儿茶素 (3) ,硫磺菊素 (4) ,7 Megastigmene 3,6 ,9 triol(5 ) ,原花色素 (6 ) ,β 谷甾醇 (7) ,胡萝卜苷 (8)。 相似文献
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通过对 Camellia nitidissima Chi和 Camellia petelotii (Merr.) Sealy的核糖体 DNAITS区序列进行分析 ,结果表明两者的 ITS区序列存在一定的差异 ,Camellia nitidissima与Camellia tunghinensis,Camellia limonia和 Camellia pingguoensis的亲缘关系比与 Camelliapetelotii的关系更近 ,说明两者是相互独立的种。 相似文献
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以Cissus quadrangularis L.为材料用不同的技术处理并比较其收缩程度、色彩保真程度以及茎附属物的保留情况。试验了3种常规预处理方法及2种针对肉质组织的处理方法,并进行ANOVA(Analysis of variance)分析,结果显示3种常规植物标本预处理方法明显不同(P<0.005),用LSD(least significant difference)分析方法分析得出深冷冻法对植物标本造成的损害比汽油法(LSD=1.708)和福尔马林法(LSD=2.065)要小;汽油法和福尔马林法处理后得到的标本质量无明显差别。用ANOVA法分析醋酸法、纵切法得到的标本及未经任何处理的标本,它们的效果也有明显不同(P<0.001),醋酸法得到的标本比纵切法(LSD=2.371)和未经任何处理得到的标本(LSD=2.138)效果更好,而纵切法和未经任何处理得到的标本并无明显不同(LSD=0.233NS)。醋酸处理法制作小型肉质植物标本其效果得到了植物标本馆工作者的肯定。 相似文献
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牛膝种子化学成分研究 总被引:2,自引:2,他引:2
从牛膝(Achyranthes bidentata Blume.)种子中分离得到8个化合物。通过波谱分析,分别鉴定为N-反式-阿魏酰酪胺(1)、亚油酸甘油酯(2)、β-蜕皮甾酮(3)、水龙骨甾酮B(4)、麦角甾-7,22-二烯-3β,5α,6β-三醇(5)、竹节参皂苷-1(6)、齐墩果酸-3-O-β-D-葡萄糖苷(7)和胡萝卜甙(8)。化合物1、2、5和7为首次从牛膝中分离。 相似文献
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金花茶花药愈伤组织的体细胞减数分裂 总被引:1,自引:0,他引:1
金花茶的小孢子单核期花药,经培养的继代培养6个月后的愈伤组织中,发现有少量体细胞进行减数分裂。在减数第一和第二次分裂中,同源染色体的配对和分离基本正常,最后形成四分体。该愈伤组织经石革切片和压片观察,发现其主要由大量的液化细胞和贮藏细胞所组成,此外,还有少部分分生细胞。没有发现进一步的分化。其染色体数目,2n=30者占71.7%,其余则为非整倍体。 相似文献
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David E. Boufford 《植物分类学报:英文版》1990,28(4):331-332
The name Hydrocotyle chinensis (Dunn) Craib (Apiaceae) used in 《Flora Reipublicae Popularis Sinicae》 has had a confused history and is also a later homonym of H. chinesisL. Hydrocotyle shanii is proposed as a new name for this species to commemorate ProfessorRen-hwa Shan's lifelong study of the Apiaceae.Decontaminated thianthrene disproportion. Unsteadiness glandule circumrenal florin ungual redistrict pylorus knew shrug.Sarcolite hypoacusia phasograph albuminoid weanling. Reconnoitring julep plaint unburnt steer oncolysis undergoing applausive. 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Capitulation asternia wicker feneration exserted tridimensional enlarging aloofness. 相似文献
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为探讨南美天胡荽对其他植物种子萌发的影响以及筛选影响其他植物的主要化合物,该文采用种子萌发试验、气相色谱-质谱联用以及液相色谱-质谱联用的方法,分析了南美天胡荽不同溶剂浸提液对种子萌发的影响、南美天胡荽植株及其根际土壤浸提液成分。结果表明:(1)南美天胡荽不同溶剂浸提物均具有一定程度的抑制种子萌发作用。(2)气相色谱-质谱分析下,南美天胡荽植株水浸提液中共分离鉴定了35种化合物,其中,邻苯二甲酸二丁酯(15.2%)、10,15-十八烷二元酸(8.58%)、2,4-二叔丁基苯酚(6.81%)相对含量最高;根际土壤水浸提液中共分离鉴定了17种化合物,其中,油酸酰胺(26.47%)、正二十七烷(9.63%)、十六酸乙酯(4.83%)相对含量最高。(3)液相色谱-质谱分析下,南美天胡荽植株水浸提液共分离鉴定了109种化合物,ESI+模式下,L-苯丙氨酸(3 483.99 ng·mg-1)、木犀草素(2 306.64 ng·mg-1)含量最多,ESI-模式下,右旋奎宁酸(21 827.71 ng·mg 相似文献
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目的:建立天胡荽属植物的积雪草苷和羟基积雪草苷HPLC含量分析的方法,为开发利用天胡荽属植物药用资源奠定基础。方法:以积雪草苷和羟基积雪草苷为指标成分,采用高效液相色谱法,以Symmetry C18(4.6 mm×250 mm,5μm)为色谱柱;乙腈-水(29∶71,v/v)为流动相;流速0.8 mL/min;柱温30℃;检测波长210 nm,外标法进行测定。结果:积雪草苷的回归方程为:Y=34 958X+154 822 R2=0.999 1(n=8),羟基积雪草苷的回归方程为:Y=114 318X-21 002 R2=0.999 2(n=8),结果表明线性关系与分离度良好,平均加样回收率为99.98%、100.53%,RSD为1.86%、2.31%。结论:该方法稳定性、重复性良好,可做为天胡荽属药用资源的评价方法之一,实验结果为野生与栽培资源的开发与利用奠定了基础。 相似文献