野丁香属植物的一个新异名

通过对野生植物及馆藏标本的观察比较,确认伞花野丁香(Leptodermis umbellata Batalin)与文水野丁香(L.diffusa Batalin)为同种植物,故予以归并。     

小叶丁香的组织培养及植株再生

1 植物名称 小叶丁香（Syringa microphylla Diels）,又名四季丁香。 2 材料类别 幼嫩的无芽茎段。     

野丁香属植物叶表皮形态特征研究

在光学显微镜和电子扫描显微镜下观察了茜草科(Rubiaceae)野丁香属(Leptodermis Wall.) 35种8变种植物的叶表皮微形态特征.结果表明,野丁香属植物叶表皮细胞为多边形或不规则形状,垂周壁平直、弓状或波状.气孔器全部位于下表皮,有辐射型、平列型两种,其中平列型较为普遍.表皮毛在上下表皮都有分布,有单...     

中国茜草科资料(五)

野丁香属　LeptodermisWall.１德浚野丁香　LeptodermisyuiLo,sp.nov.新种Frutex0.5-1.5maltus;ramiramuliquegraciles,illiveterespurpureo-rubriglabri,illijuvenespubescentiis2serialibustecti.Folialaxamembranacealateovatavellanceolata.1.5-4.5cmlonga,0.7-2cmlata,apiceobtusavelsubacuta,interdumrotunda,basilatecuneatavelcuneata,supranigri-griseainsiccostrigasdispersa,subtusleviterglaucaglabravelhispidasecuscostam,marginefimbriato-ciliata,costissubtusimpresissimis,nervislateralibusgracilibusutrinsecusc.4-5…     

野山楂一新变种

本文发表了野山楂一新变种,即匍匐野山楂Crataegus cuneata Sieb.et Zucc.var.shangnanensis L.Mao et T.C.Cui.     

野罂粟胚性愈伤组织诱导和植株再生

1 植物名称 野罂粟（Papaver nudicaule L．）。     

蓝丁香及其混淆种的澄清

检查了模式标本之后,认为小叶蓝丁香(变种)Syringa meyeri var．spontanea的叶片较小,近圆形,具掌状五出脉;小枝圆柱形,具较密的毛。与蓝丁香(原变种)S．meyeri var．meyeri有较大的差异,应提升为种,即山丁香S．spontanea(M．C. Chang)X．K．Qin。     

喜马拉雅野青茅的合格发表

补充了喜马拉雅野青茅Deyeuxia himalaica 的拉丁描述和特征简介,指定了主模式,使其成为合法名称。     

野大麦幼叶组织培养

IeafTissueCultureofHordeumbrevisubulatumZHANGYa－Lan,CHENGXiao－Rui,LIYan－Fang（ChagchunUniversityofAgriculturalandAnimalSciences,Changchun130062）1植物名称野大麦（Hordeumbrvisubula-tum）。2材料类别无菌苗幼叶切段。3培养条件（1）无菌苗培养基：0．7％琼脂粉;（2）诱导愈伤组织基本培养基：MS＋CH300mg·L-1（单位下同）,附加2,4-D0.5、1．0、1．5、2．0、4．0、60、8.0;（3）愈伤组织继代培养基：MS＋2,4-D1．0＋CH300;（4）分化培养基：MS＋CH300＋2,4-D1.0＋6－BA0.1＋生物素0．2;（5）…     

厚叶木犀名称的合格发表

由于指定的两号标本分别为花和果模式标本,厚叶木犀在种及变种等级上的名称Osmanthus pachyphyllus H．T．Chang和O．marginatus var．pachyphyllus（H．T．Chang）R．L．Lu是不合格发表的名称。通过指定模式标本,对厚叶木犀O．marginatus var．pachyphyllus的名称作了合格发表。     

不同土壤养分水平下2种外来鬼针草和近缘本地种的比较研究

【背景】鬼针草属白花鬼针草和三叶鬼针草原产于热带美洲,入侵我国后给生态环境、农业经济等造成严重的危害和影响。目前,关于它们的研究主要针对单个物种。为了更好地理解这2种外来鬼针草的入侵能力和入侵机制,本文开展了这2种入侵种与近缘本地种之间的比较研究。【方法】通过盆栽试验,设置低肥和高肥2个养分水平,测量和计算2种外来鬼针草与近缘本地种金盏银盘在不同土壤养分水平下的形态和生长参数、生物量及其分配、繁殖持续期、单株种子产量以及表型可塑性指数等。【结果】在低肥条件下,除了繁殖持续期和种子产量外,2种外来种和本地种的大多数参数均无显著差异。但在高肥条件下,外来种白花鬼针草的总叶面积、比叶面积、叶面积比、繁殖持续期和种子产量明显高于本地种,而三叶鬼针草总叶面积、比叶面积、总生物量、相对生长速率却显著低于本地种。在对土壤养分的可塑性方面,白花鬼针草在株高、总叶面积、比叶面积、总生物量、叶面积比、相对生长速率、平均叶面积比和种子产量方面的可塑性均高于其他2种植物;三叶鬼针草与金盏银盘相比,大多数参数的可塑性指数较接近。【结论与意义】白花鬼针草是一种入侵能力很强的外来种。长的繁殖持续期和高种子产量是白花鬼针草和三叶鬼针草有别于本地种金盏银盘的重要入侵性状。本研究可为揭示三叶鬼针草和白花鬼针草的入侵机制和影响因素提供依据,并为入侵预测和控制提供基本资料。     

Differentiation of Three Varieties of Rhizoctonia circinata; var. circinata, var. oryzae and var. zeae on the Basis of Cellular Fatty Acid Composition

Cellular fatty acid analysis was employed to differentiate three varieties of Rhizoctonia circinata ; var. circinata , var. oryzae and var. zeae . Eight fatty acids including myristic (14 : 0), pentadecanoic (15 : 0), palmitic (16 : 0), palmitoleic (16 : 1  cis 9), stearic (18 : 0), oleic (18 : 1  cis 9), linoleic (18 : 2  cis 9,12) and linolenic (18 : 3  cis 9,12) acids were present in isolates of all three varieties of R. circinata . Heptadecanoic acid (17 : 0) was detected in isolates of R. circinata var. zeae but not in isolates of R. circinata var. circinata or R. circinata var. oryzae . Palmitic, oleic and linoleic acids were the major fatty acids found, comprising 94–98% of the whole-cell fatty acid content. The remaining fatty acids were present in small amounts. Based on the composition (%) of fatty acids, isolates of R. circinata var. circinata , R. circinata var. oryzae and R. circinata var. zeae were clearly differentiated into three groups as shown by principal component and cluster analyses. This finding agrees well with the grouping of R. circinata into three varieties based on differences in colony morphology of the vegetative state. In principal component and cluster analysis, isolates of R. circinata var. circinata from Japan and Alaska were indistinguishable.     

小花三脉紫菀和狭叶三脉紫菀的区别:形态学和细胞学证据

产自湖北神农架的狭叶三脉紫菀Aster ageratoides var. gerlachii (Hance) Chang一直被各种文献和有关标本馆误定为小花三脉紫菀A. ageratoides var. micranthus Ling。我们对二者进行了野外采集和形态学、细胞学的比较研究,分析了导致错误鉴定的原因,重新确定了二者的界限。小花三脉紫菀无横走地下茎,这一性状具有重要的分类学价值。核型研究发现,小花三脉紫菀为二倍体,2n=2x=18=18m,核型属1A型;狭叶三脉紫菀则是四倍体,2n=4x=36=32m+4sm (2SAT),核型属2A型。二变种的染色体数目、核型均为首次报道。狭叶三脉紫菀在湖北为新分布记录。     

膜荚黄芪与蒙古黄芪幼苗的光能利用及其耐光性研究

以盆栽膜荚黄芪和蒙古黄芪幼苗为试验材料,测量2种黄芪叶片的光合速率、叶绿素荧光参数、光能利用率及耐光性等指标的日变化,以探讨它们的光能利用、热耗散以及耐光性差异.结果表明:(1)随着太阳光合有效辐射的日变化进程推进,2种黄芪的初始荧光(F0)、非光化学淬灭(NPQ)、PSⅡ调节性能量耗散量子产最(YNPQ)先升高后降低...     

吉林省白粉茵属叉丝壳组新记录变种与新寄主

记录了采自长春地区的白粉菌属叉丝壳组（Erysiphe sect.Microsphaera）吉林省新记录变种2个:万布白粉菌原变种（E.vanbruntiana var.vanbruntiana）和车轴草白粉菌原变种（E.trifolii var.trifolii）,其寄主东北接骨木（Sambucus manshuri...     

龙骨星蕨与膜叶星蕨的关系:来自叶绿体rbcL、rps4和trnL-trnF、rps4-trnS序列的证据

龙骨星蕨(Microsoriummembranaceumvar. carinatum)是新近发表的一个变种,从形态特征看,它与原变种膜叶星蕨(M. membranaceumvar. membranaceum)可以很容易地区分。但将龙骨星蕨与另外 3种国产星蕨属 (Mi crosorium)植物叶绿体基因组中rbcL、rps4基因和trnL trnF、rps4 trnS基因间隔区进行PCR扩增和序列分析,并与已经发表的真蕨类的相应序列进行比较发现,龙骨星蕨与膜叶星蕨在所研究的 4个DNA片段中均未表现出序列差异(除了trnL trnF区的一个 2bp长度差异外 ),而所比较的其他真蕨类变种间的相应DNA片段均存在一定的差异。因此DNA序列证据不支持龙骨星蕨变种的成立。     

Anticryptococcal activity of Voriconazole against Cryptococcus neoformans var. gatti vs var. neoformans: Comparison with Fluconazole and effect of human serum

Voriconazole (VCZ), a new wide-spectrum antifungal triazole currently in development, was tested for activity against Cryptococcus neoformans (CN) var. gattii and var. neoformans in RPMI-1640 (RPMI) or RPMI plus human serum. In RPMI VCZ was 10-fold more inhibitory than FCZ for both varieties of CN. In the presence of human serum neither VCZ nor FCZ had enhanced activity against CN var. gattii. By contrast, both VCZ and FCZ had significantly increased activity in the presence of serum against CN var. neoformans. The lack of serum-enhancing activity for VCZ or FCZ against CN var. gattii may reflect the in vivo situation and predict less efficacy in CN var. gattii infections. This revised version was published online in June 2006 with corrections to the Cover Date.     

中国柱隔孢属的分类研究III.*

短叶茳芏Cyperusmalaccensisvar.brevifolius和和三叶(鬼)针草Bidenspilosa上两个中国新记录种Ramulariacaricis和Ramulariaconcomitans,另外4个已知种的名称做了订正。     

中国柱隔孢属的分类研究III.

短叶茳芏Cyperusmalaccensisvar.brevifolius和和三叶(鬼)针草Bidenspilosa上两个中国新记录种Ramulariacaricis和Ramulariaconcomitans,另外4个已知种的名称做了订正。     

Inter-simple sequence repeat (ISSR) diversity within Monarda fistulosa var. brevis (Lamiaceae) and divergence between var. brevis and var. fistulosa in West Virginia

Inter-simple sequence repeat (ISSR) banding patterns were used to examine genetic diversity within and among populations ofMonarda fistulosa var.brevis, a rare taxon restricted to several populations in limestone glades and barrens in eastern West Virginia and Virginia. More than 34% of the total ISSR diversity in var.brevis occurred among populations, which is high when compared to the few other rare species that have been examined for ISSR variation. Prior studies demonstrated that var.brevis is morphologically distinct from the more widespread var.fistulosa, and that the differences are maintained when the two varieties are grown together in a uniform environment. The present study utilizing ISSR markers indicated that the two varieties are distinct, though quite similar genetically, and this is concordant with prior investigations documenting their morphological and habitat differences. However, the ISSR results suggest that the two varieties have diverged relatively recently and/or there is a low level of gene flow between them.