广西刺竹属一新种

广西刺竹属一新种戴启惠黄大勇（广西林业科学研究院南宁５３０００１）ＡＮＥＷＳＰＥＣＩＥＳＯＦＢＡＭＢＵＳＡＦＲＯＭＧＵＡＮＧＸＩ,ＣＨＩＮＡＤＡＩＱｉＨｕｉＨＵＡＮＧＤａＹｏｎｇ（ＧｕａｎｇｘｉＡｃａｄｅｍｙｏｆＦｏｒｅｓｔｒｙ,Ｎａｎｎｉｎｇ...     

广西杠柳属一新种

广西杠柳属一新种方鼎,凌惠珠（广西中医药研究所,南宁５３００２２）关键词杠柳属;大花杠柳;新种;广西ＡＮＥＷＳＰＥＣＩＥＳＯＦＰＥＲＩＰＬＯＣＡＬＩＮＮ．（ＡＳＣＬＥＰＩＡＤＡＣＥＡＥ）ＦＲＯＭＧＵＡＮＧＸＩ￥ＦａｎｇＤｉｎｇａｎｄＬｉｎｇＨｕｉｚｈ...     

广西杠柳属一新种

广西杠柳属一新种方鼎,凌惠珠（广西中医药研究所,南宁５３００２２）关键词杠柳属;大花杠柳;新种;广西ＡＮＥＷＳＰＥＣＩＥＳＯＦＰＥＲＩＰＬＯＣＡＬＩＮＮ．（ＡＳＣＬＥＰＩＡＤＡＣＥＡＥ）ＦＲＯＭＧＵＡＮＧＸＩ￥ＦａｎｇＤｉｎｇａｎｄＬｉｎｇＨｕｉｚｈ...     

广西树萝卜属一新种

广西树萝卜属一新种方鼎（广西中医药研究所南宁５３００２２）ＡＮＥＷＳＰＥＣＩＥＳＯＦＴＨＥＧＥＮＵＳＡＧＡＰＥＴＥＳ（ＶＡＣＣＩＮＩＡＣＥＡＥ）ＦＲＯＭＧＵＡＮＧＸＩ,ＣＨＩＮＡＦＡＮＧＤｉｎｇ（ＧｕａｎｇｘｉＩｎｓｔｉｔｕｔｅｏｆＴｒａｄｉｔｉｏ...     

广西种子植物资料

广西种子植物资料陈秀香,丘华兴（广西民族医药研究所,南宁５３０００１）（中国科学院华南植物研究所,广州５１０６５０）关键词圆叶青藤;膜叶白桐树;牛膝菊;齿叶猫尾树ＮＥＷＲＥＣＯＲＤＳＯＦＳＰＥＲＭＡＴＯＰＨＹＴＥＦＲＯＭＧＵＡＮＧＸＩ￥ＣｈｅｎＸｉｕ...     

广西野生苏铁资源及其分类研究（一）

广西野生苏铁资源及其分类研究（一）韦发南（广西植物研究所,桂林５４１００６）关键词野生苏铁,资源,分类,广西ＳＴＵＤＩＥＳＯＮＴＨＥＲＥＳＯＵＲＣＥＳＡＮＤＣＬＡＳＳＩＦＩＣＡＴＩＯＮＯＦＴＨＥＷＩＬＤＣＹＣＡＤＳＦＲＯＭＧＵＡＮＧＸＩ（Ⅰ）ＷｅｉＦ...     

广西单子叶植物五新种

广西单子叶植物五新种方鼎,覃德海（广西中医药研究所,南宁５３００２２）关键词仙茅科,球序仙茅,兰花蕉科,长萼兰花蕉,姜科,裂舌姜,少斑姜,长腺姜ＦＩＶＥＮＥＷＳＰＥＣＩＥＳＯＦＭＯＮＯＣＯＴＹＬＥＤＯＮＥＡＥＦＲＯＭＧＵＡＮＧＸＩ￥ＦａｎｇＤｉｎｇ;...     

广西杜鹃花属新分类群和新记录

广西杜鹃花属新分类群和新记录李光照（广西植物研究所,桂林５４１００６）关键词杜鹃花属;新分类群;新记录ＮＥＷＴＡＸＡＡＮＤＮＥＷＲＥＣＯＲＤＳＯＦＲＨＯＤＯＤＥＮＤＲＯＮＦＲＯＭＧＵＡＮＧＸＩ￥ＬｉＧｕａｎｇｚｈａｏＧｕａｎｇｘｉＩｎｓｔｉｔｕｔｅｏ...     

广西天南星属一新种

广西天南星属一新种刘寿养（广西中医学院,南宁５３０００１）关键词天南星属;桂西南星ＡＮＥＷＳＰＥＣＩＥＳＯＦＧＥＮＵＳＡＲＩＳＡＥＭＡＭＡＲＴ．ＦＲＯＭＧＵＡＮＧＸＩ￥ＬｉｕＳｈｏｕｙａｎｇ（ＧｕａｎｇｘｉＣｏｌｌｅｇｅｏｆＴｒａｄｉｔｉｏｎａｌＣｈ...     

广西石灰岩地区蕨类新植物

广西石灰岩地区蕨类新植物周厚高,黎桦,黄玉源（广西农业大学,南宁５３０００５）关键词桂南爬树蕨;广西耳蕨;节毛耳蕨;石灰岩地区;广西ＮＥＷＳＰＥＣＩＥＳＯＦＰＴＥＲＩＤＯＰＨＹＴＥＦＲＯＭＬＩＭＥＳＴＯＮＥＡＲＥＡＯＦＧＵＡＮＧＸＩ￥ＺｈｏｕＨｏｕｇ...     

Recent advances in the study of Kaposi's sarcoma-associated herpesvirus replication and pathogenesis

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.     

The structure, reproduction and taxonomy of Vidalia and Osmundaria (Rhodophyta, Rhodomelaceae)

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.     

New or rare chromosome counts in Artemisia L. (Asteraceae, Anthemideae) and related genera from Kazakhstan

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.     

肝癌中HBV和HCV基因和抗原的分布及意义

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     

Selection with two alleles and complete dominance

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.