花粉形态计算机量化分析研究

以白莲花粉为实验材料 ,介绍了进行花粉形态计算机量化分析的步骤。花粉经醋酸法处理后 ,用电子显微镜对花粉进行观察照相 ,尔后用计算机技术对花粉电镜照片进行处理 ,最后用C语言编制了计算花粉形态面积的计算机程序。结果表明 :花粉计算机量化分析有助于快速定量测定有关花粉形态指标 ,是花粉数量分类的一种有效方法。     

长白山区珍稀濒危观赏植物优先保护定量研究

长白山区属温带气候,野生观赏植物资源十分丰富。经过7年的野外调查和查阅文献资料,首次建立了以蕴藏系数、保护缓急程度等9项指标在内的定量评价珍稀濒危观赏植物指标体系。结果表明:长白山区目前804种野生观赏植物中,受到生存威胁的观赏植物种类共有57科、129属、170种。其中急需保护的有27科、43属、52种,分别占长白山区科、属、种总数的47.39%、33.33%、30.59%,代表种类主要有长白松(Pinus sylvestriform is)、东北红豆杉(Taxus cuspidata)、朝鲜崖柏(Thuja koraiensis)等;需要保护的有32科、53属、62种,分别占科、属、种总数的56.14%,41.09%,36.47%,代表种类主要有牛皮杜鹃(Rhododendron chrysanthum)、木通马兜铃(Aristoloehia man-shuriensis)、花楸树(Sorbus pohuashanensis)等;一般保护的有36科、48属、56种,分别占科、属、种总数的63.16%,37.21%,32.94%,代表种类主要有芍药(Paeonia lactiflora)、长白瑞香(Daphne koreana)、溪荪(Iris sanguinea)等。     

江西珍稀濒危植物优先保护定量研究

以江西省50种珍稀濒危植物为定量研究对象,采用以濒危系数、遗传价值系数、物种价值系数和生物学特征系数4个指标构成的珍稀濒危植物等级综合评价值的方法对上述植物优先保护顺序进行了定量研究。对50种珍稀植物进行排序的结果基本符合《中国珍稀濒危植物》和《中国植物红皮书》第1册的分析,但也有不同：属一级保护的有长柄双花木、天目木姜子和长序榆等共10种,占研究物种总数的20．00％,其中有浙江楠和华东黄杉等2渐危种;二级保护的有胡豆莲、连香树、伯乐树、银钟花等共26种,占52．00％,其中胡豆莲属于濒危种;三级的有小花木兰、观光木等12种,占24．00％,其中有4种属稀有种,8种属渐危种;此外,八角莲、野大豆等在江西可以暂不列入保护,这两者均属渐危种,占4．00％。     

A Study on the Quantitative Relationship between Pinus Pollen in Surface Sample and Pinus Vegetation

Based on percentages of Pinus pollen in surface samples and that of Pinto vegetation, the data indicates that, in Pinus forest its pollen is more then 90% of total tree pollen, while in non-pine area it is usually less than 30%. The factors influencing dispersal of the Pinus pollen, besides production, are air currents and landform. In the Pinus mixed forest the behavior of associate tree pollen has great effect on statistical result of Pin,ts pollen percentage. To estimate quantitatively the relationship between Pinus plant and its pollen, two curves are fitted by powet regression. Although Pinus pollen has great productivity and complex dispersal characteristics, the relationships between Pinus trees and Pinus pollen shown in our data are relatively consistant.     

核心种质数量性状代表性评价指标的研究

对植物核心种质数量性状遗传多样性代表性的评价指标进行了系统的研究．以夏播菜用大豆154个品种为材料,采用马氏距离计算品种间的距离,并用不加权类平均法(UPGMA)进行聚类,根据树型图,采用逐步聚类随机取样法,构建了37个品种组成的核心种质．以此为例,通过方差F测验、均值t测验、极差符合率、表型频率分布、遗传多样性指数、表型相关分析等多个指标分析,来评价核心种质数量性状遗传多样性的代表性,结果表明构建的核心种质具有代表性,表明核心种质评价需包含评价遗传变异和遗传结构的指标．     

Quantitative data on the fine structural organization of the palisade zone of the median eminence

Summary In order to characterize different sub-zones in the palisade zone of the rat median eminence, quantitative ultrastructural parameters were applied to brains fixed in aldehyde-osmium tetroxide. The palisade zone has been subdivided in 4 successive sub-zones. Increasing numbers of granular vesicles (GV), especially those smaller than 110 nm, are observed from dorsal to ventral sub-zones. There also are more GV per unit area of nervous tissue in the perivascular than in the more dorsal sub-zones. The individual nerve profiles exhibit a larger size in the perivascular layer than in the more dorsal areas, whereas the number and size of nerve profiles devoid of vesicles diminish from dorsal to ventral. As a consequence more GV occur in the perivascular nerve profiles. In the GV containing nerve profiles the concentration of GV is, however, constant in the different sub-zones. A fluctuating size of the preterminal and terminal parts of the nerve fibres is suggested.We are indebted to Mrs. R. M. Y. Hartsteen for technical assistance. The constructive criticism of Prof. J. Moll is acknowledged, as well as the photographic assistance of Miss P. C. Delfos.     

Effect of Chronic Desipramine Treatment on Dihydroalprenolol, Imipramine, and Desipramine Binding Sites: A Quantitative Autoradiographic Study in the Rat Brain

Desmethylimipramine (DMI) administered once daily for 10 days caused a significant decrease in beta-adrenergic receptor binding, as measured by quantitative autoradiography in discrete brain regions. The decrease was observed 72 h after the last injection throughout the cortex and in hippocampus but not in other regions, much richer in beta-receptors, such as the caudate, olfactory tubercle, superior colliculus, dorsomedial thalamus, substantia nigra, or pineal. The same paradigm did not affect imipramine (IMI) binding in the cortex or in regions with high concentrations of IMI binding sites. DMI binding was not decreased, either. Significant increases in DMI binding were observed in frontal cortex and in the ventral aspect of the bed nucleus of the stria terminalis. We conclude that a reduction in tricyclic binding is not a general phenomenon following chronic treatment with tricyclic antidepressants, and changes in binding, when they do occur, are not correlated with areas of high binding site density.     

茎瘤芥主要数量性状遗传力和遗传进度的初步研究

以23个茎瘤芥地方品种为试材估算了15个性状遗传力、遗传进度及遗传变异系数。结果表明各性状遗传力从大到小顺序为营养生长期、瘤茎膨大期、茎／叶、菜皮百分率、瘤茎产量、叶宽、瘤茎横径、出苗至瘤茎膨大始期、株鲜重、瘤茎纵径、叶长、菜形指数、开展度、瘤茎空心率、株高。瘤茎空心率、茎／叶、菜皮百分率和瘤茎产量的遗传变异较大,具有较大的选择潜力。在5％的选择率下,可获得较大的遗传进展。综合试验结果认为,瘤茎膨大期、营养生长期、茎／叶宜在早代进行一次性单株选择,菜皮百分率、瘤茎产量、叶宽等性状可适当加强早代选择。     

肿瘤患者皮纹特征的量化分类初步分析

本文对肿瘤患者的指纹和掌纹按照标准的分类方法进行了较为详细的分析,并与对照组进行了对比,用χ2检验的方法,发现患者与对照组之间在指纹和掌纹的出现率上均存在差异,这些结论为搭建量化皮纹特征模型、建立量化的皮纹特征指标体系、患者与对照组的分类判别都提供了有力的理论依据。     

新疆北疆地区景观生态类型分类初探：以新疆沙湾县为例

1　前　　言新疆生态环境的现状喜忧参半,绿洲内部生态环境得到改善,但沙漠化过程不断加剧,成为新疆生态环境良性循环的极大隐患。景观生态学以综合整体的思想审视生态环境的现状和变化,为我们更成功地解决所面临的生态问题提供了新的理论和方法。本文试图在新疆沙湾县生态环境监测工作的基础上,提出适宜于新疆北疆地区的景观生态类型分类系统,以便更好地认识、利用和管理各类景观,达到人地共生和持续发展的目的。2　沙湾县环境概况沙湾县地处北疆天山中部的依连哈比尔尕山北麓与准噶尔盆地南缘之间,界于Ｅ84°57′～86°09′和Ｎ43°20′～…