原位PCR技术及其应用前景

原位PCR是分子生物学领域中一种崭新的技术,它结合了PCR技术和原位杂交技术的优点.该文介绍了原位PCR技术的起源、发展及方法学,并简要描述了该技术的应用现状及前景．     

A new bryozoan genus from the Weddell Sea,Antarctica

Summary Brettiopsis gen.nov. is erected within the family Scrupariidae. Its affinities with the genera Brettia, Leiosalpinx, Brettiella, Bugulella and Scruparia are briefly discussed. Its type species, Brettia triplex Hastings, is redescribed on the basis of new material collected in the southern part of the Weddell Sea by the RV Polarsirkel. Bivalved brood chambers, previously unknown in this species, are described and illustrated.     

中国柿树科植物一新记录种——长柱柿(英文)

报道中国柿科(Ebenaceae)柿属植物一新记录种——长柱柿(Diospyros brandisiana Kurz),并描述了该新记录种的形态特征和生境分布。该种为该属中国分布的唯一具老茎生花的种类。凭证标本存放于中国科学院昆明植物研究所标本馆(KUN)。     

733. CARPINUS TSCHONOSKII

The east Asian hornbeam, Carpinus tschonoskii Maxim., is illustrated and described. Its distribution in the wild and the distinctness of related species are discussed. Its behaviour in cultivation is reported.     

1053. Furcraea macdougallii Matuda: Asparagaceae

Furcraea macdougallii Matuda, Falso Maguey Grande, is illustrated (Plate 1053). Its history in cultivation and distribution in Mexico are discussed. Its conservation status: probably extinct in the wild.     

A new nematode-destroying Harposporium

A mucedinaceous parasite, observed destroying eelworms in a maize-meal-agar plate culture prepared by the addition of some forest duff from western Maryland, is newly described as Harposporium cycloides. Its conidia differ from the crescentic or semicircular conidia of the familiar H. anguillulae in that their curvature extends to an angular magnitude of approximately a full circle. Its chlamydospores, though sometimes found united in pairs, are much more often produced singly than are the chlamydospores of H. anguillulae.     

A new species of Allium (Alliaceae) from Dalmatia,Croatia

Allium croaticum , a new species from the island of Vis in Central Dalmatia (Croatia) is described and illustrated. Its relationships with allied species belonging to the A. stamineum group (Allium section Codonoprasum) are discussed. It is a diploid species (2n = 16), colonizing calcareous screes and flowering in early summer. Its morphology, leaf anatomy, karyology, palynology, ecology and taxonomic position are examined. © 2008 The Linnean Society of London, Botanical Journal of the Linnean Society, 2008, 158 , 106–114.     

786. STROBILANTHES ATTENUATA

Strobilanthes attenuata (Nees) Nees is described and illustrated. Its extensive synonomy is discussed and its principal characteristics are highlighted. Its introduction to countries with a temperate climate is chronicled and successful experience of its cultivation in England is described.     

Streptomyces thermonitrificans sp.n., a thermophilic streptomycete

A new species of thermophilicStreptomyces has been isolated from a soil sample collected in Bombay. Its morphological characteristics and physiological behaviour have been studied in detail. It has thus been found to belong to Series XVI-Thermophilus of Waksman's scheme of classification (1961). Its similarity to and differences from a few known species are described. It has been designated asStreptomyces thermonitrificans.     

977. SAXIFRAGA HYPNOIDES

Saxifraga hypnoides L., mossy saxifrage or Dovedale moss, is illustrated. Its history, distribution in northern Europe and cultivation are discussed. Its survival in the face of a warmer climate is mentioned in connection with the last remaining population in Cheddar Gorge, Somerset.     

Dominant diatoms in Tjeukemeer

Diatoma elongatum has been observed in Tjeukemeer (The Netherlands) from time to time. Its intermittent presence is probably a consequence of the local hydrology. In early 1972, besides the usual increase of Melosira spp. and of unicellular centric diatoms, a development of D. elongatum took place. Its maximum was found 5-6 weeks later than those of the centric diatoms. Possible factors causing the decrease in number of cells are discussed.     

Distribution and status of bustards in China

This article presents the distribution and status of bustards, which are listed as first-category protected animals according to the survey results during 1990–2002 in China. The Chinese populations of Otis tarda dybowskii are breeding in south-west of Heilongjiang Province, western Jilin Province, east and middle Inner Mongolia, north Ningxia Hui Autonomous Region, and Gansu Province. A few can winter in the south breeding-range. Its winter-range lies from the south to the Yellow River, as far as to Guizhou Province and Jiangxi Province. Its population number is about 200–300 or 500–800. The Chinese populations of O. t. tarda are breeding in the north and west of Xinjiang. It is unclear about its winter-range, which is presumed to be in south Asia. Recently we found individuals wintering in Chabuchaer and west Xinjiang. The population number is about 2000–3000. The habitat in breeding range includes steppe, grassland, desert grassland, and farmland. The habitat in winter range is the beach of rivers and lakes, meadows, meadow-grassland, and wheatland. The Chinese populations of Chlamydotis undulata macqueeni are breeding in the fringe of the Jungar Basin, the banks of the Ulungur River, Balikun and south Turpan Basin in Xinjiang, west Inner Mongolia, and west Gansu. NortheastMulei in eastern Jungar Basin of Xinjiang is the main breeding-range in the world. The bird uses desert and desert grassland as its habitat. Its winter-range is west Asia and south Asia. Its population number is about 2000. The Chinese populations of Tetrax tetrax are breeding in north Xinjiang, and China is located on the east border of its breeding-range. Its habitat is grassland and semi-desert, and its winter-range lies in south Asia. Its population in China is very scarce. In addition, we analyzed the causes of their endangerment and put forward protection tactics of Chinese Bustards. __________ Translated from Arid Zone Research, 2007, 24(2): 179–186 [译自: 干旱区研究]     

940. BULBOPHYLLUM ANKYLOCHELE

Bulbophyllum ankylochele, a native of New Guinea, is illustrated. Its ecology and pollination are explained, and it is compared with the superficially similar Masdevallia from South America. Suggestions for its successful cultivation are given.     

Eimeria bateri Bhatia,Pandey and Pande, 1965 from the Hungarian Quail Coturnix c. coturnix in the United States and Its Attempted Transmission to the Chicken**

SYNOPSIS. Eimeria bateri Bhatia, Pandey, Pande, 1965 is described from the Hungarian quail Coturnix c. coturnix for the first time in the U.S. Its oocysts are either ellipsoidal or ovoid, 14–28 by 12–19 μ with a mean of 20.5 by 15.3 μ. Its sporocysts are elongate ovoid, with a Stieda body, 8–12 by 6–9 μ with a mean of 10.3 by 7.5 μ. Two coccidia-free chicks 8 days old were inoculated with 50,000 oocysts each of E. bateri, but patent infections did not occur. This coccidium is therefore presumably host-specific.     

<Emphasis Type="Italic">Capparis tchaourembensis</Emphasis>, a new species of Capparaceae from Mayotte,Comororian Archipelago

A new species of Capparis, C. tchaourembensis Fici, is described and illustrated. Its conservation status is assessed and its affinities with related taxa are discussed.     

Tropaeolaceae: 680. TROPAEOLUM BEUTHII

Tropaeolum beuthii Klotzsch is described and illustrated. Its history and distribution in the wild are discussed and notes on its cultivation are given.     

Pollen wall development in Malvastrum corchorifolium (Malvaceae)

The Malvaceae family has many species that are the subject of systematic controversy. Its broad spectrum of fruit and pollen morphology has challenged taxonomists because often morphological studies lead to different conclusions. Therefore, this study of selected stages of pollen wall development in Malvastrum corchorifolium is offered as another approach to verify its current taxonomic assignment and assist in the clarification of malvacean ancestry. Aperture number, endexine thickness and the presence of basal cushions are features that concur with its present placement in the Abutileae tribe, Sidinae subtribe and genus Malvastrum. Its advanced spine morphology, long spines with pointed apices and prominent basal cushions, suggest that Malvastrum corchorifolium is highly specialized and evolutionarily advanced.     

711. FRITILLARIA HERMONIS

Fritillaria hermonis Fenzl, from Syria and Lebanon is illustrated. Its history and ecology are discussed, and related species are compared. Instructions for its cultivation are given.