中国部分杨属植物的染色体数目

对中国杨属Populus L. 5组14种(银白杨P. alba L.、河北杨P. hopeiensis Hu & Chow、毛白杨P. tomentosa Carr.、欧洲山杨P. tremula L.、小叶杨P. simonii Carr.、辽杨P. maximowiczii Henry、大青杨 P. ussuriensis Kom. 、青杨P. cathayana Rehd.、小青杨P. pseudo-simonii Kitag.、香杨P. koreana Rehd.、毛果杨P. trichocarpa Torr. & Grog.、大叶杨P. lasiocarpa Oliv.、欧洲黑杨P. nigra L.、胡杨P. euphratica Oliv.),3变种(新疆杨P. alba L. var. pyramidalis Bge.、箭秆杨P. nigra L. var. thevestina Bean.、钻天杨P. nigra L. var. italica (moench.) Koehne),3杂交种(小钻杨P.×xiaozhuanica W. Y. Hsu & Liang、北京杨P.×beijingensis W. Y. Hsu、加杨P.×canadensis Moench、晚花杨P.×canadensis Moench cv. “serotina” 、沙兰杨P.×canadensis Moench cv. “Sacrau 79”和意大利214杨P.×canadensis Moench cv. “I-214”)进行了染色体计数。发现白杨组的毛白杨P. tomentosa Carr. 、 黑杨组的沙兰杨P. ×canadensis Moench cv. “Sacrau 79”和意大利214杨P. × canadensis Moench cv. “I-214”为三倍体(2n=3x=57),其余均为二倍体(2n=2x=38)。     

世界秋海棠属侧膜组植物新资料

记述了秋海棠属侧膜组11新种,即星果草叶秋海棠(BegoniaasteropyrifoliaY.M.ShuietW.H.Chen)、耳托秋海棠(B.auritistipulaY.M.ShuietW.H.Chen)、桂南秋海棠(B.austroguangxiensisY.M.ShuietW.H.Chen)、水晶秋海棠(B.crystallinaY.M.ShuietW.H.Chen)、须苞秋海棠(B.fimbribracteataY.M.ShuietW.H.Chen)、巨叶秋海棠(B.gigaphyllaY.M.ShuietW.H.Chen)、黄氏秋海棠(B.huangiiY.M.ShuietW.H.Chen)、长柱秋海棠(B.longistylaY.M.ShuietW.H.Chen)、扁果秋海棠(B.platycarpaY.M.ShuietW.H.Chen)、喙果秋海棠(B.rhynchocarpaY.M.ShuietW.H.Chen)、多变秋海棠(B.variifoliaY.M.ShuietW.H.Chen);并报道了3新变种及1新名称,即疏毛越南秋海棠(B.boniiGagnep.var.remotisetulosaY.M.ShuietW.H.Chen)、密毛龙州秋海棠(B.morseiIrmsch.var.myriotrichaY.M.ShuietW.H.Chen)、簇毛伞叶秋海棠(B.umbr-aculifoliaY.WanetB.N.Changvar.flocculosaY.M.ShuietW.H.Chen)及彩纹秋海棠(B.variegataY.M.ShuietW.H.Chen)。     

中国链格孢属分类研究Ⅴ. 生于锦葵科、睡莲科和蔷薇科植物上的新种、新名称和中国新记录种

含链格孢2个新种、1个新名称和4个新记录:朱槿链格孢Alternaria rosa-sinensis M.X.Gaoet T.Y.Zhang,sp.nov.、地榆链格孢A.sanguisorbae M.X.Gaoet T.Y.Zhang,sp.nov.、莲生链格孢A.nelumbicola T.Y.Zhang,nom.nov.、锦葵链格孢A.malvae Roum.et Letendre.、苹果生链格孢A.pomicola A.S.Horne、杏链格孢A.pruni和塔米链格孢A.tamijiana.新种有拉丁文特征描述和绘图.新种的模式标本分别保藏在山东农业大学植物病理学标本室(HSAUP)和西北农业大学真菌标本室(HMUABO).     

云南的复叶耳蕨属(ArachniodesBl.)植物

对云南产复叶耳蕨属植物进行了再次的分类订正研究,确认云南有该属植物20个种类,其中,华南复叶耳蕨Arachniodesfestina(Hance)Ching和齿头复叶耳蕨A.aristata(Forst.)Tindale为云南分布新记录;将《中国植物志》等资料中的Acrorumohradissecta、Arachniodesailaoshanensis、A.australis、A.austro-yunnanensis、A.caudata、A.chinensisvar.cornopteris、A.chinensisvar.jinpingensis、A.chingii、A.dayaoensis、A.futeshanen-sis、A.gongshanensis、A.guangtongensis、A.lushuiensis、A.pianmaensis、A.pseudo-aristata、A.pseudo-assa-mica、A.shuangbaiensis、A.sinoaristata、A.sporadosora和A.triangularis等20个名称作为新异名处理。还列出了云南产该属植物的分种检索表、名称的处理及分类讨论、地理分布等。     

假地枫皮的订正

作者查阅了全国42个标本馆所收藏的403号假地枫皮Illicium jiadifengpi B.N.Chang标本, 确认该种植物为中国特有, 分布于安徽、浙江、江西、福建、湖北、湖南、广东和广西。将百山祖八角I.jiadifengpi B.N.Changvar.baishanense B.N.Chang et S.H.Ou归并到假地枫皮;将闽皖八角I.minwanense B.N.Changet S.D.Zheng作为假地枫皮的一个变型--紫花八角I.jiadifengpi B.N.Changf.minwanense(B.N.ChangetS.D.Zhang)Q.Lin, 将武夷八角I.wuyishanum Q.Lin归并到紫花八角中。     

棉铃虫被中华卵索线虫感染后血淋巴中还原糖、海藻糖和游离脂肪酸的变化

用3, 5 -二硝基水杨酸法和气相色谱法, 分别对棉铃虫(Helicoverpa armigera) 感染中华卵索线虫(Ovomermis sinensis) 后不同时期血淋巴中还原糖、海藻糖和游离脂肪酸含量变化进行了分析。感染的1-3 d,棉铃虫血淋巴还原糖含量(mg/ ml) (分别为0. 551 ±0 .035、0 .505 ±0. 025、0. 852 ±0. 051) 显著低于对照组(分别为0. 655 ±0 .041、0 .878 ±0. 032、0 .964 ±0 .034); 4-5 d还原糖含量(分别为1. 016 ±0. 051、1. 016 ±0 .042) 显著高于对照组(分别为0. 767 ±0 .041、0. 853±0 .038), 第6 d 还原糖含量(0 .608 ±0. 031) 显著低于对照组(0. 698 ±0 .024)。感染组棉铃虫血淋巴中海藻糖的含量情况与还原糖的不同, 在感染的1-3 d, 棉铃虫血淋巴海藻糖的含量(分别为0 .349 ±0. 029、0.374 ±0. 027、0 .479 ±0. 046) 与对照组(分别为0. 383 ±0 .026、0 .374 ±0 .023、0 .483 ±0. 034) 的基本相同, 没有明显的变化; 4-6 d海藻糖含量(分别为0 .529 ±0. 045、0. 584 ±0 .041、0. 428 ±0. 041) 低于对照组(分别为0. 698 ±0 .042、0. 652 ±0 .032、0 .469 ±0 .038)。无论是感染组还是对照组, 棉铃虫血淋巴中软脂酸(16∶0)、棕榈油酸(16∶1)、硬脂酸(18∶0)、油酸(18∶1)、亚油酸(18∶2     

中国薹草属(莎草科)研究随记(Ⅳ).隐匿薹草组的分类修订(英文)

隐匿薹草组(Carex sect.Infossae)为最近建立的薹草属(Carex)的组,当时报导分布于我国安徽和江苏,有2种和1变种,即隐匿薹草(C.infossa)、显穗薹草(变种)(C.infossa var.extensa)和矮秆薹草(C.minuticulmis)。根据描述,另有15种和2变种应归属本组,这些分类群具有较为一致的特征:果囊椭圆球状卵球形或卵球形,通常疏被短毛或近无毛,先端渐狭成中等长的喙,喙口具2小齿;瘦果卵球形,先端钝或微凹。通过文献考证、标本查阅、野外采集,并结合果囊和瘦果的扫描电镜观察,对隐匿薹草组所涉及的种(含种下类群)进行了分类修订。该组仅有2种:百里薹草(C.blinii)和尖叶薹草(C.oxyphylla)。将Carex elmeri、C.granifera、矮秆薹草(C.minuticulmis)、上海薹草(C.shanghaiensis C.blinii subsp.shanghaiensis)、C.sublateralis、C.taihokuensis和锐果薹草(C.tatsutakensis)并入百里薹草;将沟囊薹草(C.canaliculata)、樟木薹草(C.changmuensis)、C.distantiflora、隐匿薹草(C.infossa)、显穗薹草(C.infossa var.extensa)、C.lateralis、C.loheri、无芒长嘴薹草(C.longerostrata var.exaristata)、城湾薹草(C.longerostrata var.hoi)、C.lyi、和平菱果薹草(C.macrandrolepis)和C.sharyotensis并入尖叶薹草。     

对我国白背飞虱的区划意见

根据白背飞虱Sogatella furcifera(Horvath)在我国的迁飞规律及国内各稻区的发生情况进行区划.以主要为害时期,参考越冬情况作为区划的一级标准;以始见、主要迁入期,参考气流迁入流型、地势、迁出期和水稻栽培制度等作为区划的二级标准.将我国白背飞虱的发生划分为五个带十六个区.即: Ⅰ.5,6,9月主害带:Ⅰ_a.海南南部区;Ⅰ_b.版纳、河口区;Ⅰ_c.西江以南区;Ⅰ_d.南岭区;Ⅰ_e.滇西南,东南区. Ⅱ.6、7月主害带:Ⅱ_a.粤闽区;Ⅱ_b.闽北区. Ⅲ.7、8月主害带:Ⅲ_a.川、黔、湘区;Ⅲ_b.鄂西区. Ⅳ.7月主害带:Ⅳ_a.湘、赣区; Ⅳ_b.长江、淮南区. Ⅴ.8月主害带:Ⅴ_a.川东区;Ⅴ_b.云、贵、川西北区;Ⅴ_c.陕南区;Ⅴ_d.华北、东北区;Ⅴ_e.西北区.     

《现代生物医学进展》投稿须知

本刊投稿方式:①网站投稿:http://biomed.cnjoumals.com;http://www.shengwuyixue.com;http://swcx.periodicals.net.cn②E-mail:liudhui_21@126.com;biomagnetism@163.com;biomed_54@126.com基本要求:1.本刊重视论文的原创性,强调新颖性与创新点!2.投稿论文需结构完整、逻辑严密、层次清晰、数据准确、描述客观、论据充分、论证严谨、语句简练、流畅。3.来稿一律进行检索查重。     

广东连阳谷田组植物化石及其意义

本文描述和讨论广东连阳地区谷田组地层的化石共14属18种,即:Paracalamites sp.,Annularia pingloensis(Sze)Gu er Zhi、Lobatannularia cathaysiana Yao、L.multifoliaKon'on et Asama、L.sp.、Schizonerua wangtangiana sp.nov.、Pecopteris hemitelioidesBrongn.、P.valida sp.nov.、Cladophlebis varia sp.nov.、Danaeites guangdongensis sp.nov.、Ptychocarpus unauriculatus sp.nov.、Odontopteris plicatoides sp.nov.、Neuropteri-diopsis longovata gen.et sp.nov.、Compsopteris contracta Gu et Zhi、Gigantonoclea cra-ssa sp.nov.、Gigantopterts?nicotianaefolia Schenk、G.parvipinnulata sp.nov.和 Rhipido-psis sp.等,其中有1新属、9新种和2未定种。谷田组顶部发现了早二叠世晚期的(竹蜓)类层,下段则与下伏的茅口组假整合。植物群的地质时代为早二叠世晚期。     

STRUCTURALLY PRESERVED FOSSIL PLANTS FROM ANTARCTICA. I. ANTARCTICYCAS,GEN. NOV., A TRIASSIC CYCAD STEM FROM THE BEARDMORE GLACIER AREA

Silicified stems with typical cycadalean anatomy are described from specimens collected from the Fremouw Formation (Triassic) in the Transantarctic Mountains of Antarctica. Axes are slender with a large parenchymatous pith and cortex separated by a narrow ring of vascular tissue. Mucilage canals are present in both pith and cortex. Vascular tissue consists of endarch primary xylem, a narrow band of secondary xylem tracheids, cambial zone, and region of secondary phloem. Vascular bundles contain uni- to triseriate rays with larger rays up to 2 mm wide separating the individual bundles. Pitting on primary xylem elements ranges from helical to scalariform; secondary xylem tracheids exhibit alternate circular bordered pits. Traces, often accompanied by a mucilage canal, extend out through the large rays into the cortex where some assume a girdling configuration. A zone of periderm is present at the periphery of the stem. Large and small roots are attached to the stem and are conspicuous in the surrounding matrix. The anatomy of the Antarctic cycad is compared with that of other fossil and extant cycadalean stems.     

Phylogeny of families in the Pectinoidea (Mollusca: Bivalvia): importance of the fossil record

The Triassic fossil record points to the monophyly of the Pectinoidea (scallops), all members of which have a triangular resilium with a nonmineralized medial core that functions below the hinge line. The elastic properties of this resilium in extant taxa predict that the initial adaptation of the Pectinoidea was to swimming. This is indeed corroborated by the shell form of Pernopecten , the earliest known pectinoidean genus, which ranged from late Devonian to earliest Triassic. The new family Entolioididae, a largely Triassic group, provides the missing link between the Pernopectinidae and the families Propeamussiidae, Entoliidae, and Pectinidae, all of which originated by the Middle Triassic and survive to the present day. A new Triassic genus Filamussium shows that the Propeamussiidae originated from the Entolioididae, not directly from the Pernopectinidae as previously supposed. Evidence from morphology, the fossil record, and molecular genetics indicates that the family Spondylidae originated in the Middle Jurassic from an ancestor within the Pectinidae, possibly the genus Spondylopecten , which was already present in the Late Triassic. Journal compilation © 2006 The Linnean Society of London, Zoological Journal of the Linnean Society , 2006, 148 , 313–342. No claim to original US government works     

广西凤山、西林等地中三叠统上部双壳类分带研究*

讨论广西西部中三叠统上部的双壳类生物地层序列,建立5个化石带;并附述黔南和滇东南晚三叠世1个双壳类带.这些带自下而上为:(1) Daonella (Longidaonella) producta-D. americana 带,属晚安尼早中期;(2) D. moussoni 高峰带,属晚安尼晚期;(3) D. rieberi-D. indica 带,属早拉丁期;(4) D. kotoi-D. jilongensis 带,属晚拉丁早期;(5) Halobia subcomata-D. varifurcata带,属晚拉丁晚期;(6) H. rugosoides-H. bifurcata 带,属早卡尼期.文内简要描述了各带的主要标志化石23种.     

The gliding reptiles of the Upper Permian

The skeleton of a long-ribbed reptile from the Upper Permian Marl Slate of north-east England is described. The animal is assigned to the genus Weigeltisaurus , previously recorded from the Kupferschiefer of West Germany. Long-ribbed reptiles from the Upper Permian of Madagascar are also considered. Daedalosaurus Carroll, 1978 is a junior synonym of Coelurosauravus Piveteau, 1926. The European and Madagascan genera can be accommodated within a single family Coelurosauravidae, Infraclass Eosuchia. The skull is diapsid with an incomplete lower temporal arcade. Comparison with the modern Draco and the Upper Triassic kuehneosaurids supports the conclusion that the coelurosauravids were effective gliders.     

福建永安丰海二叠系上部及三叠系底部的双壳类动物群*

系统研究了闽西永安丰海地区二叠系上部及三叠系下部的双壳类动物群面貌、层位及组合,并与国内外相当的地层进行了对比,阐明了该双壳动物群在二叠-三叠系界线划分中的地层意义.描述了15属24种(其中5新种)、5未定种.     

The Ramonalinids: a new family of mound‐building bivalves of the Early Middle Triassic

Abstract: Ramonalina n. gen. is a large thick‐shelled bivalve abundant in mounds preserved in the Gevanim Formation (late Anisian, Middle Triassic) of southern Israel. This bivalve was an edgewise‐recliner with a flattened anteroventral (functionally basal) surface and partially fused valves. It is the basis of a new family, the Ramonalinidae, which is descended from the myalinids through adaptation to edgewise positioning. Ligamental attachment was inadequate to hold valves together on large adults, resulting in valve displacement followed by shell secretion in the apical area that fused valves together and caused irregular growth on abapical areas. The ramonalinids formed large, nearly monospecific mounds on firm mud substrates in shallow marine waters. These are the largest Middle Triassic bivalve mounds known.     

An unusual new archosauriform from the Middle–Late Triassic of southern Brazil and the monophyly of Doswelliidae

Until now the Doswelliidae was considered a monospecific family including Doswellia kaltenbachi from the Late Triassic of North America. The phylogenetic position of this taxon remained enigmatic until recently, when a sister‐group relationship with the Proterochampsidae was suggested. In the present contribution we describe the new doswelliid species Archeopelta arborensis gen. et sp. nov. from the Middle–Late Triassic of Brazil. A cladistic analysis recovered Archeopelta, Doswellia, and Tarjadia within a monophyletic group of basal archosauriforms, the Doswelliidae. The monophyly of this family is supported by the presence of osteoderm ornamentation that is coarse, incised, and composed of regular pits and the presence of an unornamented anterior articular lamina. Archeopelta is more closely related to Doswellia than to other archosauriforms by the presence of basipterygoid processes anterolaterally orientated, dorsal centra with a convex surface, width of the neural arch plus ribs of the first primordial sacral that are three times the length of the neural arch, and iliac blade laterally deflected, with strongly convex dorsal margin, and a length less than three times its height. The phylogenetic analysis indicates that Doswellidae is the closest large monophyletic entity to Archosauria, which achieved a wide palaeolatitudinal distribution during the late Middle and Late Triassic time span. © 2011 The Linnean Society of London, Zoological Journal of the Linnean Society, 2011, 161 , 839–871.     

A NEW LATE CRETACEOUS MACROSEMIID FISH (NEOPTERYGII, HALECOSTOMI) FROM MOROCCO, WITH TEMPORAL AND GEOGRAPHICAL RANGE EXTENSIONS FOR THE FAMILY

Abstract:  A recent collection of actinopterygian fossil fishes from a previously unreported locality in the Cenomanian or Turonian of southeastern Morocco includes a single specimen of a macrosemiid fish. Macrosemiids are more common in Jurassic and Early Cretaceous deposits, with the previously known range of the family being Late Triassic through Aptian or Albian. This discovery therefore extends the temporal range of the family into the Late Cretaceous. Moreover, macrosemiids had not previously been reported from northern Africa or the Moroccan area of the Tethys basin; therefore, this fossil also increases the geographical range of the family. The Moroccan macrosemiid is described in a new genus and species, Agoultichthys chattertoni . A phylogenetic analysis places it basal to all other genera of the family with the exception of Notagogus . Diagnostic characters of the new species include the high number of scales laterally along the body and the greater number of dorsal fin rays than in other members of the family.     

The oldest evidence of a sauropod dinosaur in the western united states and other important vertebrate trackways from grand staircase‐escalante national monument,Utah

Recent discoveries of abundant fossil footprints from the new Grand Staircase‐Escalante National Monument of southern Utah, have important implications for the spatial and temporal distribution of Mesozoic vertebrates in Triassic and Jurassic time. Since the monument's creation in 1996, fossil footprints have been reported from at least seven formations in the Mesozoic (Triassic‐Cretaceous) within the monument. By far the most significant of these discoveries are sauropod and theropod tracks from the upper part of the Middle Jurassic Entrada Sandstone and a large Apatopus trackway from the Late Triassic Chinle Formation. Tracks in the Entrada Sandstone are found at the same stratigraphic level as those in the Moab megatracksite, and so considerably extend this large ichnological complex. A wide‐gauge sauropod trackway (cf. Brontopodus) from this unit represents the first reported from the Entrada Sandstone, and so is the oldest known from the western United States. This trackway also reveals a tail trace, which is the first reliable record of a sauropod tail trace.     

Late Triassic and Lower Jurassic Foraminifera of the carbonate platform of the Beyaz Aladağ Group (Eastern Taurus,Turkey): New stratigraphic implications

Foraminifera have proven to be reliable biostratigraphic indicators. Accordingly, Triassic and Early Jurassic benthic Foraminifera allow us to define a biostratigraphic zonation within the carbonate platform of Kayseri (Yahyal?), Göksun (Kahramanmara?) and Sivas (Delikta?) regions in the Eastern Taurus (Ceviz, Alada?, Kaman and Felfan Mountains). Seven new stratigraphic sections are described in detail and the first precise inventory and illustration of the benthic foraminifer assemblages from the Triassic successions are presented over a large geographic area. The stratigraphic and palaeontological features of the Lower Mesozoic carbonate units of these mountains include several synchronous transgressive–regressive events that suggest continuity of the Lower Mesozoic environments over a large parautochthonous Taurus zone. Palaeogeographic considerations about the Eastern Taurus carbonates are given, evidencing three stages of development underwent by the studied area: 1) a stable continental margin from Lower Triassic to Lower Cretaceous; 2) a dismantling of the continental margin and first emplacement of ophiolites in the Upper Cretaceous; and 3) a deformation of the continental margin and emplacement of the Peridotite Nappe in the uppermost Cretaceous (Maastrichtian).