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1.
山东植物志补遗(一)   总被引:5,自引:1,他引:4  
李法曾  樊守金 《广西植物》2004,24(2):122-124
报道了山东分布新记录科 1个 ,新记录属 1个 ,新记录种 1 2个 ,新记录变种 4个 ,新记录变型 1个。  相似文献   

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湖南的新记录植物(二)   总被引:8,自引:0,他引:8  
本文报导了湖南植物分布新记录科1个,新记录属2个,新记录种14个,新记录变种1个.  相似文献   

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山东植物志补遗(二)   总被引:3,自引:1,他引:2  
李法曾  张学杰   《广西植物》2006,26(6):581-582
报导了山东分布新记录属4个,新记录种10个,新记录亚种1个,新记录变种2个。  相似文献   

4.
湖南植物区系增补   总被引:7,自引:3,他引:7  
刘克明  李丙贵 《植物研究》1996,16(3):281-285
湖南种子植物地理分布新记录属1个,新记录种15个,新记录变种2个。  相似文献   

5.
湖南的新记录植物(一)   总被引:12,自引:0,他引:12  
刘克明  刘林翰  李丙贵   《广西植物》1995,15(2):116-119
本文报道了湖南植物分布新记录属4个,新记录种24个,新记录变种1个。  相似文献   

6.
朱长山  杨好伟 《植物研究》1994,14(4):361-368
本文报道了河南省新记录的种子植物计10个新记录属,34个新记录种,4个新记录变种。文中引用的标本,全部收藏在河南农业大学植物标本室(HNAU)。  相似文献   

7.
贵州植物区系增补   总被引:4,自引:1,他引:3  
何顺志 《植物研究》1997,17(3):308-312
本文报道了贵州种子植物地理分布新记录属6个,新记录种14个,新记录变种1个。  相似文献   

8.
李天煜  王玉国  蒋巧媛   《广西植物》2000,20(1):37-39
初步研究了广西的水生维管植物 ,发现若干个新记录 ,包括 1个新记录科 ,1个存疑新记录属 ,3个新记录种 ,1个区内分布新资料。这对认识广西植物种类的多样性有一定意义  相似文献   

9.
海南植物增补(三)   总被引:4,自引:0,他引:4  
本文继续报道海南岛新记录的植物,计24个新记录种,4个新记录属。1个新记录科,其中指叶瓶蕨在我国是首次发现。本文引用的标本,全部收藏在中国科学院华南植物研究所标本室(SCBI)。  相似文献   

10.
本文继续报道海南岛新记录的植物,计24个新记录种,4个新记录属。1个新记录科,其中指叶瓶蕨在我国是首次发现。本文引用的标本,全部收藏在中国科学院华南植物研究所标本室(SCBI)。  相似文献   

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It has now been over twenty years since a novel herpesviral genome was identified in Kaposi's sarcoma biopsies. Since then, the cumulative research effort by molecular biologists, virologists, clinicians, and epidemiologists alike has led to the extensive characterization of this tumor virus, Kaposi's sarcoma-associated herpesvirus(KSHV; also known as human herpesvirus 8(HHV-8)), and its associated diseases. Here we review the current knowledge of KSHV biology and pathogenesis, with a particular emphasis on new and exciting advances in the field of epigenetics. We also discuss the development and practicality of various cell culture and animal model systems to study KSHV replication and pathogenesis.  相似文献   

16.
Comprises species occurring mostly in subtidal habitats in tropical, subtropical and warm-temperate areas of the world. An analysis of the type species, V. spiralis (Sonder) Lamouroux ex J. Agardh, a species from Australia, establishes basic characters for distinguishing species in the genus. These characters are (1) branching patterns of thalli, (2) flat blades that may be spiralled on their axis, (3) width of the blade, (4) primary or secondary derivation of sterile and fertile branchlets and (5) position of sterile and fertile branchlets on the thalli. Application of the latter two characters provides an important basic method for separation of species into three major groups. Osmundaria , a genus known only in southern Australia, was studied in relation to Vidalia , and its separation from the Vidalia assemblage is not accepted. Species of Vidalia therefore are transferred to the older genus name, Osmundaria. Two new species, Osmundaria papenfussii and Osmundaria oliveae are described from Natal. Confusion in the usage of the epithet, Vidalia fimbriala Brown ex Turner has been clarified, and Vidalia gregaria Falkenberg, described as an epiphyte on Osmundaria pro/ifera Lamouroux, is revealed to be young branches of the host, Osmundaria prolifera.  相似文献   

17.
Fifteen chromosome counts of six Artemisia taxa and one species of each of the genera Brachanthemum, Hippolytia, Kaschgaria, Lepidolopsis and Turaniphytum are reported from Kazakhstan. Three of them are new reports, two are not consistent with previous counts and the remainder are confirmations of very scarce (one to four) earlier records. All the populations studied have the same basic chromosome number, x = 9, with ploidy levels ranging from 2x to 6x. Some correlations between ploidy level, morphological characters and distribution are noted.  相似文献   

18.
肝癌中HBV和HCV基因和抗原的分布及意义   总被引:1,自引:0,他引:1  
采用原位分子杂交方法检测HCV RNA及HBV X基因;采用免疫组织化学方法研究HCV核心抗原,非结构区C33c抗原及HBxAg在肝细胞肝癌中的定位及分布.结果表明(1)HCV RNA、HBV X基因在肝细胞肝癌组织检出率分别为40%(55/136)和82%(112/136).HCV RNA定位于癌细胞的胞浆内,阳性细胞呈散在、灶状及弥漫分布三种形式;HBV X基因在肝癌细胞中的分布呈胞浆型、核型及核浆型,阳性细胞也呈上述三种分布形式;(2)HCV C33c抗原、核心抗原在肝细胞肝癌中的阳性率为81%(133/164)及86%(141/164).C33c抗原定位于癌细胞及肝细胞的胞浆内;核心抗原既定位于癌细胞核中,又可定位于胞浆中.C33c抗原阳性细胞以灶状分布为主;而核心抗原阳性细  相似文献   

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For a plant selection model with frequency-independent viabilities, fertilities and selfing rates, it is shown that apart from global fixation, for certain parameter combinations a protected polymorphism and facultative fixation (either allele may become fixed according to initial frequencies) may both occur. Facultative fixation requires different selling rates for the dominant and recessive type. Protection of the polymorphism requires resource allocation for male and female function. In this connection the problem of purely genetically caused population extinction is discussed.
For general frequency dependence and regular segregation, the chances for establishment of a completely recessive gene are compared to those of a completely dominant gene. It is proven that the process of establishment of the recessive gene, despite a fitness advantage, may be considerably endangered by drift effects if random mating prevails. The recessive gene may reach the same effectivity in establishment as a dominant gene, only if the recessive homozygote mates exclusively with its own type during the period of establishment.  相似文献   

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