米面翁果实油中共轭炔烯酸的研究

米面翁（ＢｕｃｋｌｅｙａｌａｎｃｅｏｌａｔａＭｉｑ．）果实含油３３．４％。经气相色谱分析．油中常见脂肪酸为棕榈酸２．６％,硬脂酸１．３％,棕榈油酸０．５％,油酸３８．７％,亚油酸１．６％,亚麻酸７．９％;尚有３个不常见脂肪酸,通过分离和紫外光谱、红外光谱、核磁共振、色谱－质谱方法鉴定,以及臭氧化法证实油中含十八碳烯－反１１－二块－７,９－酸．含量为３９．４％,在植物中首次发现。另外两个未鉴定酸,含量分别为３．８％和４．２％。     

宫粉郁金的组织培养和快速繁殖

１植物名称宫粉郁金（Ｃｕｒｃｕｍａ　ｋｗａｎｇｓｉｅｎｓｉｓ）。２材料类别　块茎萌动芽。３培养条件　萌动芽生长培养基：（１）ＭＳ＋６－ＢＡ１ｍｇ·Ｌ－１（单位下同）＋ＮＡＡ０．２。不定芽增殖与愈伤组织诱导培养基：（２）ＭＳ＋６－ＢＡ１０＋ＫＴ５;（３）ＭＳ＋６．ＢＡ１０;（４）ＭＳ＋６－ＢＡ５＋ＫＴ２．５;（５）ＭＳ＋６－ＢＡ５;（６）ＭＳ＋６－ＢＡ２＋ＫＴ１。生根培养基：（７）ＭＳ＋ＮＡＡ０．５;（８）ＭＳ＋６－ＢＡ０．５＋ＮＡＡ０．５;（９）ＭＳ。以上培养基均加０．７％琼脂,３％蔗糖,ｐＨ５…     

苦楝种子油的性质与应用研究

若楝种子机榨出油率为４％－６％。油的比重（２５℃）０．９２６４、折光率（２５℃）１．４７９４,皂化值２０．１,酸值３．６,磺值１１３．７。油的主要脂肪酸有棕榈酸（９．３１％）、硬脂酸（３．０８％）、油酸（１８．７％）、亚油酸（６５．５９％）。不饱和脂肪酸含量较高是其油的特点。初步证明油中非脂肪部分含有多种萜类化合物。通过室内和大田试验,证明苦楝种子油乳剂对多种农业害虫有较好的杀虫效果。     

非洲菊的组织培养与快速繁殖

１植物名称非洲菊（Ｇｅｒｂｅｒａｊａｍｅｓｏｎｉｉ）,又名扶郎花。２材料类别无菌种子萌发的幼苗。３培养条件（１）种子萌发培养基：１／２ＭＳ＋０．７％琼脂（或脱脂棉）;（２）诱导分化培养基：ＭＳ＋６－ＢＡ１．５ｍｐ·Ｌ－１（单位下同）＋ＩＢＡ０．２;（３）芽增殖培养基：ＭＳ＋６－ＢＡ０．５;（４）生根培养基：ＭＳ＋ＮＡＡ２。上述（２）、（３）、（４）培养基内琼脂均为０．７％,蔗糖３％,ｐＨ５．８～６．０。培养条件为室温和自然光照,种子萌发前为暗培养。４生长与分化情况４．１萌发种子用纱布袋包装,无菌…     

樟树核糖体失活蛋白在种子成熟过程中的动态变化与特性

樟树种子中存在着ｃｉｎｎａｍｏｍｉｎ与ｃａｍｐｈｏｒｉｎ两种新的核糖体失活蛋白,电泳分析与Ｗｅｓｔｅｒｎ杂交结果表明ｃｉｎｎａｍｏｍｉｎ在９、１０、１１月份种子中的含量分别是８．９％２６．８％和１１．５％,以１０月份种子的含量为最高。ｃａｍｐｈｏｒｉｎ的含量则分别为１．７％,２．５％与４．６％,随着种子的成熟而为断增加。８月份的幼嫩种子中检测不出ｃｉｎｎａｍｏｍｉｎ与ｃａｍｐｈｏｒｉｎ。这表明樟树     

芥蓝的组织培养和快速繁殖

１植物名称芥蓝（Ｂｒａｓｓｉｃａａｌｂｏｇｌａｂｒａ）优良种株,取自广东汕头白沙蔬菜原种研究所。２材料类别未开花的植株基部腋芽。３培养条件（１）诱导丛生芽培养基为Ｍ１：ＭＳ＋６－ＢＡ２ｍｇ·Ｌ‘（单位下同）＋ＮＡＡ０．２;Ｍ２：ＭＳ＋６－ＢＡ１＋ＮＡＡ０．１;Ｍ３：ＭＳ＋６．ＢＡ１＋ＮＡＡ０．２。上述培养基均含蔗糖３％,琼脂０．８％,ｐＨ５．８～６．０。（２）生根培养基：ＭＳ＋ＮＡＡ０．５＋２％蔗糖＋０．４５％卡拉胶（０．７％琼脂）。培养温度２０～２５℃,光照１２ｈ．ｄ－１,光照度２０００１ｘ４…     

灵芝孢子粉氨基酸,脂肪酸及元素组成的研究

从灵芝Ｇａｎｏｄｅｒｍａｌｕｃｉｃｈａｍ孢子粉中检出１８种常见氨基酸,总是为７．２９～７．７１ｍｇ／１００ｍｇ;其中甲硫氨酸含量高达３．３０～３．４８ｍｇ／１００ｍｇ人体必需氨基酸含量占总量的６９．４～７０．４％,灵芝孢子粉含有棕榈酸（１９．８％）油酸（５５．２％）,亚油酸（１６．５％）以及少量的肉豆蔻酸,硬脂酸,廿碳烯酸及廿二碳四烯酸等,对５６种元素进行定量或半定量分析,结果表明灵芝孢子粉碳氮比     

香石竹的叶片培养及植株再生

１植物名称香石竹（Ｄｉａｎｔｈｕｓｃａｒｙｏｐｈｙ－ｌｌｕｓ）,别名康乃馨。２材料类别无菌苗叶片。３培养条件以ＭＳ为基本培养基。分化培养基附加：（１）６－ＢＡ１．０ｍｐ·Ｌ－１（单位下同）＋ＮＡＡ０．３;（２）６－ＢＡ１．０＋ＮＡＡ０．１;（３）６－ＢＡ１．０＋ＮＡＡ０．０５。增殖培养基附加６－ＢＡ０．５＋ＮＡＡ０．１。分化和增殖培养基均加蔗糖３％、琼脂０．７％,ｐＨ５．８。生根培养基为１／２ＭＳ附加ＮＡＡ０．１,蔗糖２％,琼脂０．６％,ｐＨ５．８。培养温度为（２５±１）℃,光照１２ｈ·ｄ－１,…     

一种改进的阴茎电刺激采精法和猕猴藏酋猴及熊猴的采精及其精液特征的初步研究

本文报道了一种改进的阴茎电刺激采精法,用脱脂棉和铝箔作为电极,以避免直接用金属电极可能对阴茎的损伤,并运用这一方法对猕猴（Ｍａｃａｃａｍｕｌａｔｔａ）、藏酋猴（Ｍ．ｔｈｉｂｅｔａｎａ）和熊猴（Ｍ．ａｓｓａｍｅｎｓｉｓ）进行了电刺激采精及其精液特征研究。电刺激采精模式为连续刺激和间断刺激方式。在采精过程中没有发生阴茎损伤。对初次接受电刺激采精的动物以间断刺激模式效果较好。猕猴、藏酋猴和熊猴的射精体积分别为２．０±０．１、６．３±１．１和３．２±０．６ｍｌ;液化体积分别为０．７±０．６、２．１±０．４和１．７±０．３ｍｌ;精子浓度分别为１２．６±１．２×１０~８、４５．６±５．６×１０~８和１１．５±０．９×１０~８／ｍｌ。３种动物精液的液化率分别为：猕猴３６．２±０．９％,藏酋猴３４．０±１．４％;熊猴５１．８±１．２％。３种动物的精子总数与射精体积和凝块体积没有相关性（ｒ~２＝０．０７９;０．０１６;０．０９４和ｒ~２＝０．０６４;０．０２０;０．０７２）。上述结果表明：１）改进的阴茎电刺激采精法适用于猕猴,特别是阴茎表面较为粗糙的藏酋猴和熊猴;２）藏酋猴的射精体积和精子总数是迄今已报道的非人灵长类中最大的,可能     

兴奋性氨基酸介导的膜电流可被吗啡阻断

在Ｓｐｒａｙｕｅ－Ｄａｗｉｅｙ大鼠的含有孤束核中央亚核及疑核神经元密集区的脑薄片上,吗啡（３—５ｐｍｏｌ）对疑核细胞内记录到的自发兴奋性突触后电位有抑制作用;向灌流液内注入吗啡可使电刺激孤束核在疑核记录到的兴奋性突触后电位的幅度降低７１．１±６．２％（Ｐ＜Ｏ．００１）,纳洛酮（５０ｎｍｏｌ／Ｌ）可翻转这种抑制效应;含有１０μｍｏｌ／Ｌ吗啡的灌流液对ＮＭＤＡ（０．５—１ｐｍｏｌ）、乙酰胆碱（３ｐｍｏｌ）及ＱＵｉｓｑｕａｌａｔｅ（０．１—０．５ｐｍｏｌ）引起的细胞膜去极化有不同程度的抑制作用,分别为３８．１±５．７％（Ｐ＜０．００１）,３２．８±５．５％（Ｐ＜０．０１）和２９．６±７．１％（Ｐ＜０．０５）。这些结果可能是由于吗啡兴奋μ和δ受体后,增加了Ｋ＋电流而降低Ｎａ＋,Ｃａ２＋离子通透性的缘故。     

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.