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1.
QIN Xiang-Kun 《植物分类学报:英文版》1998,36(4):359-364
By comparing the type specimens, Syringa spontanea is distinguished from S.
meyeri by the small suborbicular lamina palmately 5-veined and the dense pubescence onterete branchlets. Therefore, it is more consistent to recognize S.spontanea as a distinct species. 相似文献
2.
Pollen morphology of five species from China in the genus Gymnadenia R. Br. (Orchidaceae) was investigated in this work. Pollen characteristics of this genus were compared to those of
its closely related genus, Neottianthe Schltr. It is found that there are some differences of pollen
morphology between the two genera, e.g.: (A) Pollen massulae are mostly irregular less frequently
trigonous-conical in Gymnadenia, while mainly trigenuus-conical less frequently irregular in Neottianthe; (B) Ornamentation of pollen exine surface is usually indistinct, but microperforate, microrugulate, microfoveolate or both microperforate and microfossulate in high magnification in Gymnadenia, but more distinct in Neottianthe. Exine ornamentation of this genus can be divided into
five types, ( 1 ) almost smooth, or very obscurely fosset, (2) perforate, (3) fossulate or foveolate,
(4) reticuloid, (5) typically reticulate. (C) the surface of pollen massulae in Gymnadenia possess
viscin thread, but that in Neottianthe does not. The result of this work supports the separation ofNeottianthe from Gymnadenia as an independent genus. 相似文献
3.
Two species of Chondrus, C. armatus (Harv.)Okam. and C. yendoi Yamada
et Mikami from the coast of Dalian, Liaoning, China, are reported in this paper. C. yendoi is new to China. 相似文献
4.
With the evidence from palynological, cytological, ecological and morphological data,
the subspecific taxonomy of Asplenium trichomanes L. from China is carried out. Four subspecies
and one variety, i.e.A. trichomanes L. ssp. trichomanes, A. trichomanes L. ssp. inexpectans
Lovis, A. trichomanes L. ssp. quadrivalens D. E. Meyer emend. Lovis, A. trichomanes L. ssp.
pachyrachis (Christ) Lovis et Reichst. and A. trichomanes L. var. harovii Moore emend. Midle
are recognized from China. The distribution of each subspecies and variety is also presented. Some
fragments of a type specimen named as A. trichomanes L. var. centrochinense Christ in PE are
found to be different from the known taxa of A. trichomanes L. complex both morphologically andcytologically, and therefore are regarded representing a new species. 相似文献
5.
本文利用生物信息学方法比较SARS病毒和其他冠状病毒基因组.通过数据库搜索,找出与SARS病毒基因组相似的核酸或蛋白质序列,并对相似序列进行比对,分析它们的共性和差异.结果表明,SARS病毒在基因组的组织上及结构蛋白质方面与现有冠状病毒有比较大的相似性,SARS病毒基因组与冠状病毒基因组相关.但是,SARS病毒基因组还存在一些特异性序列,ORF1a和S蛋白(特别是S1)的变化以及SARS-CoV特异性的非结构蛋白可能是SARS发病机理与传染特性区别于其他冠状病毒的分子基础.在全基因组水平上进行核酸单词出现频率分析,结果表明,SARS病毒远离已知的其他冠状病毒,单独成为一类. 相似文献
6.
HONG De-Yuan 《植物分类学报:英文版》1998,36(6):538-543
The history of exploration and classification of Paeonia rockii is reviewed in the
present paper. Two allopatric subspecies in this species are recognized. The new subspecies,
subsp, taibaishanica Hong, found on northern slope of the Qingling Range has leaflets ovate
or rounded, totally or mostly lobed. P. rockii subsp, linyanshanii T. Hong et G. L. Ostiis found to be a superfluous name of P. rockii subsp, rockii. 相似文献
7.
蛩蠊目昆虫在中国的发现及一新种记述 总被引:1,自引:0,他引:1
蛩蠊目昆虫地位古老,是昆虫纲的活化石,巳知种类不多,分布区狭窄,我国一直没有报道.作者在长白山采得一雄虫,系一新种,是该目昆虫在我国的新发现. 相似文献
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Reported in this paper was the karyomorphology of the monotypic genus Pomatosace Maxim. The interphase nuclei and prophase chromosomes of P. filicula Maxim. were categorized to be complex chromocenter type and interstitial type respectively; themetaphase chromosomes were counted to be 2n = 20, ranging in length from 6.4µm to 4.1µm; the karyotype was formulated as 2n= 18m + 2sm, with the karyotype asymmetry belonging to 2A. The similar karyomorphological characteristics of interphase nuclei and prophase chromosomes between Pomatosace and Androsace, together with the similar sizeand morphology of their metaphase chromosomes, support the viewpoint that they are closelyrelated. 相似文献
10.
A new variety Chrysosplenium japonicum var. cuneifolium from Anhui, China, is
described, and the species Chrysosplenium delavayi is found new to Anhui. The genusChrysosplenium L. of Anhui is additionally recounted. 相似文献
11.
Hemerocallis dumortierii, H. esculenta and H. middendorfii were considered
to belong to a biological complex, and were treated as different varieties of the same species,
H. dumortierii. The present authors observed and compared the karyotypes of H. esculenta and H. middendorfii. Two plant samples for each of the species were studied. One sample of H. esculenta was from Wuán County, Hebei Province, at an altitute of 1000 m, the
other from Shennongjia, Hubei Province, altitute 2100 m. The two samples of H. middendorfii were respectively from Antu County, at an altitute of 700 m, and Tonghua, altitute
500 m, in Jilin Province. The karyotypes are 2n=2x=22=12m+8sm+2T for H. esculenta, while 2n=2x=22=10m+6sm+4st+2T for H. middendorfii. The karyotypical
difference between the two taxa was obviously not intraspecific but interspecific. Based on
the karyotype data as well as the morphological and phytogeographical data available, it is
considered that H. esculenta and H. middendorfii should be recognized as different
species, instead of different varieties of the same species as in literature, and that H. mid-dendorfii is more advanced than H. esculenta. 相似文献
12.
WANG Wen-Tsai 《植物分类学报:英文版》2000,38(6):497-514
(1) The evolutionary trends of sepals and stamens of the genus Clematis are discussed;
(2) New classifications for sect. Cheiropsis DC. and sect. Aspidanthera Spach are proposed; (3)
One subsection, 13 series, 5 species and 4 varieties are described as new; (4) Six new ranks and2 new combinations are made. 相似文献
13.
The chemical characteristrics of oleoresin from Pinus bungeana Zucc. was studied. It contains 25 contents. The amount of its monoterpenes is about 47.0% and that of β-pinene is as high as 24.8%. The chemical compositions of oleoresins of 16 species from sub-gen. Strobus and subgen. Pinus were also analyzed by GC and GC-MS. The amounts of
isopimaric acid, palustric acid/levopimaric acid, lambertianic acid and abietic acid in P.
bungeana oleorensin differ from that of subgen. Strobus, and is similar to that of subgen.Pinus . 相似文献
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LIN Qi 《植物分类学报:英文版》2000,38(2):167-181
Taxonomic notes of the genus Illicium Linn. are presented based mainly on herbarium
studies involving more than 10 thousand speciemens from 120 herbaria worldwide, Three new combinations are made, viz, I. fargesii Finet & Gagnep. Subsp. szechuanensis (Cheng) Q. Lin, I.
parvifolium Merr. Subsp. oligandrum (Merr. & Chun)Q. Lin and I. micranhum Dunn subsp.
tsangii (A. C. Smith)Q. Lin, and thirteen species, six subspecies, three varieties and two forms
are reduced to synonyms. Thirty-four species, three subspecies and one variety are recognized inthis genus. 相似文献
16.
YANG Qin-Er 《植物分类学报:英文版》1999,37(6):545-590
In this paper, some species of Aconitum L. (Ranunculaceae) from Yunnan are
taxonomically revised. Twenty-seven species, twenty-three varieties and three forms are reduced to synonyms; the specific status of A. fengii is restored, and one variety, A. fengiivar. crispulum Q. E. Yang is described as new. 相似文献
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腹腔注射重组腺病毒诱导的免疫反应 总被引:8,自引:3,他引:5
为研究重组腺病毒接种实验动物后的免疫反应性,利用RT-PCR方法,从HAV的RNA中克隆了结构蛋白基因插入穿梭质粒pXCX2Not I,通过磷酸钙-DNA共沉淀技术,将复制缺陷型腺病毒载体与线形化的pXCX2 CMV-HAV共转染293细胞.一系列检测方法证明产生了重组腺病毒rAdHAV.纯化后的rAdHAV滴度为1×109TCID50/mL,腹腔注射免疫昆明种小白鼠后,可诱导产生抗HAV IgG和HAV中和抗体.复制缺陷型腺病毒可作为发展基因工程病毒疫苗载体的有效系统. 相似文献