共查询到18条相似文献，搜索用时 46 毫秒
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六道木属六道木组种间关系的AFLP分析和黄花六道木中国分布新记录的认定 总被引：1，自引：0，他引：1
用荧光标记AFLP技术对东亚产六道木属六道木组作了系统关系分析。我们采用 5对AFLP引物 ,对六道木属 9个物种 ,锦带花属和猬实属各 1个物种共 16份样品进行分析 ,共获得 988个位点。不同引物所获得的结果具有很高的相容性 ,Mantel相关系数为 0 72 5～0 919,说明AFLP技术适用于六道木属的种间关系分析。用邻接法 (neighbor joining)对 16个样品 988个位点的分析生成的系统树获得很高的自展分析 (bootstrap)支持率。树系图表明 ,猬实属与六道木属管花六道木组有密切的关系。在六道啪组内 ,温州六道木与糯米条的关系密切 ,单花六道木与大花六道木差异很小 ,黄花六道木与日本产的近缘种组成一单系分支。本文认定 ,根据形态特征鉴定浙江永嘉的标本为黄花六道木 (AbeliaserrataSieb .etZucc .)是正确的 ,属中国分布新记录。文章最后补充描述了中国产的黄花六道木。黄花六道木在中国的发现进一步证明中国植物区系与日本植物区系的密切关系。 相似文献
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在华东地区木霉菌资源调查中,利用内转录间隔区(ITS)序列分析和形态学鉴定方法,对从土壤中分离到的木霉菌进行鉴定,发现一个中国新纪录种,即拟康宁木霉。Trichoderma koningiopsis/Hypocrea koningiopsis Samuels,C.SuarezH.C.Evans sp. nov.。该种典型的形态特征是在PDA以及CMD(玉米粉琼脂)上有瓶梗层出现象,而在MA(麦芽提取物)培养基上没有此特征。 相似文献
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报道并描述了采自云南南部西双版纳具有1小叶的新分布种美脉木蓝Indigofera caloneura Kurz和采自广东具有单叶的新分布种心叶木蓝I. cordifolia Heyne ex Roth.。在中国还有另外3个具有单叶的种类, 即单叶木蓝I. linifolia、刺荚木蓝I. nummularifolia和远志木蓝I. squalida。通过从植物习性、茎、叶的形态与大小及毛被、托叶、花序、花冠形状与毛被、花药、子房毛被、果实的形态与大小、所含种子数目等特征的显微观察, 比较了国产单叶类木蓝属Indigofera植物的形态学特征差异, 并针对茎、叶、毛被、花冠旗瓣和果实形状等5个最重要的特征进行了讨论。 相似文献
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<正>1 INTRODUCTION Typically, Trichoderma spp. are free-living fungi most frequently isolated from soils and have been extensively studied due to their remarkable biocontrol and plant-growth promoting capacity. 相似文献
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【背景】木霉菌现存的Stromaticum进化支为Samuels等2012年定义,包括9个木霉种;国内目前仅报道子座木霉(Trichoderma stromaticum)、蠕状毛木霉(T.vermipilum)和絮状木霉(T.floccosum)3个种。【目的】报道2个木霉属中国新记录种。【方法】采用THSM选择性培养基,从北京和山东两地土壤中分离木霉菌株,通过形态学特征、TEF1-α和RPB2序列对菌株进行鉴定。【结果】通过对TEF1-α和RPB2的系统发育分析,2个菌株分别与T.ivoriense(科特迪瓦木霉)和T.barbatum(毛簇木霉)相近;且形态学特征上存在差异。综合鉴定2个菌株分别为科特迪瓦木霉(T.ivoriense)和毛簇木霉(T.barbatum)或其近缘种。【结论】在国内新发现科特迪瓦木霉(T.ivoriense)和毛簇木霉(T.barbatum)两个木霉种,它们属于Stromaticum进化支,该进化支国内木霉种类增加到5个。 相似文献
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报道我国3个省5种海桐花属植物的新分布种,其中四川分布新记录是尖萼海桐Pittosporum subulisepalum Hu etF．T．Wang：云南分布新记录是管花海桐Ptubiflorum H．T．Chang ＆ S．Z．Yah、光叶海桐P.glabratum Lindley和海金子Pillicioides Makino：广东分布新记录是木果海桐Pxylocarpum Hu ＆ F．T．Wang。 相似文献
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中国卫矛科新记录属—膝柄木属的木材解剖（简报） 总被引：1，自引：0，他引：1
膝柄木(Bhesa sinica)为常绿乔木,高13m,胸径60cm,具板根,是一种稀有的热带珍贵用材树种。本文对膝柄木的木材构造进行解剖研究。材料采自广西合浦县南康乡大塘下檀屯的丘陵台地上,海拔50m,木材标本号7909217。用常规方法将材料切成三切面切片,厚约20μm,供微观特征观察及解剖分子测定之用。解剖分子的各项测定次数均为60次,取其平均值及标准差。 相似文献
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The root anatomy of eight woody genera of the Caprifoliaceae cultivated in the British Isles was investigated. Special emphasis was placed on the characters that can most easily be used to identify roots from this family. These were found to be:(i) in the bark, the arrangement of phloem fibres or stone cells (if present) and (ii) in the xylem, the type (scalariform or simple) and shape of vessel perforation plates, type and arrangement of cells in rays and the presence or absence of spiral thickening (especially on fibre tracheids). Vessel characters were found to be inconstant in samples of some species grown in different environmental conditions. 相似文献
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A new spiro-bis-γ-lactone glucoside was isolated from the leaves of Viburnum dilatatum and its structure was elucidated on the basis of spectral and chemical evidence. 相似文献
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A new acetylated coumarin glucoside has been isolated from the leaves of Viburnum suspensum and determined as 2′,6′-O-diacetylscopolin on the basis of spectral and chemical evidence. 相似文献
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Phytochemical research on the flower buds of Lonicera japonica Thunb. led to the isolation of 15 compounds, including nine terpenoids (1–9), three phenylpropanoid glycosides (10–12), two alkyl glycosides (13–14) and an alkaloid (15). The structures of these compounds were determined by NMR spectroscopy and comparison with data from previous literatures. Among them, eleven compounds (2–5, 8, 10 and 11–15) were reported from the genus Lonicera for the first time and compounds 3, 4, 5, 10 and 11–15 were firstly reported from the family Caprifoliaceae. Network analysis was carried out to explore the chemotaxonomic significance of these compounds for L. japonica in this study. 相似文献
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The pollen morphology of 54 samples representing 12 genera and 31 species wasinvestigated with the aid of scanning electron microscope. Observed were pollen grains ofSambucus, Viburnum, Lonicera, Leycesteria, Heptacodium, Linnaea, Abelia, Dipelta, Kolkwitzia,Symphoricarpos, Triosteum, Weigela. Based on the shape, size, position and number of aperture, exine sculpture, three types are recognized: 1. Pollen grains subprolate, less frequentlyprolate, rather small, 3-colporate, exine reticulate, as in Sambucus, Viburnum. 2. Mostly spheroidal, subolate, bigger than the former, also 3-colporate, exine spinulose as in Lonicera, Leycesteria, Heptacodium, Triosteum, Linnaea, Abelia, Dipelta, Kolkwitzia, Symphoriocarpos, Weigela. 3. Spheriodal, more or less flattend, exine scabrous as in Abelia section Zabelia andLonicera section Isoxylosteum. 1. The systematic position of Caprifoliaceae: It has been generally treated as a memberof the order Rubiales together with Rubiaceae, Valeriaceae and Dipsacaceae on floral characters.In respect to serological character, it has a close relationship with Cornaceae, and was placedin Araliales. The above stated 2nd and 3rd types of pollen grains are similar to those ofPatrinia (Valerianaceae), Scabiosa (Adoxaceae), Cornus (Cornaceae), and the pollen grainsof the 1st type are similar to those of Styraceae, Genetianaceae and Araliaceae. Taking the information so far available into consideration, the authors agree to the Cronquists treatment retaining Caprifoliaceae in the order Dipsacales together with Adoxaceae, Valerianaceae andDipsacaceae. 2. The division of tribes: Formerly Sambuceae included the genera Sambucus and Viburnum. Fritsch (1891) segregated Viburnum from Sambuceae and suggested a new tribe Viburneae including Triosteum. There is distinct difference in palynological features betweenthese two genera. The exine sculpture of Viburnum is reticulate, but that of Triosteum isspinulose. It is reasonable to separate another new tribe, Triosteae, from Viburneae. 3. The pollen morphorlogy of several Chinese endemic genera, such as Heptacodium, Dipelta, Kolkwitzia resembles that of Lonicera, Leycesteria, Linnaea, Symphoricarpos, Abelia, Triosteum. This evidence supports the foregoing treatment including them in Caprifoliaceae. 4. Two different exine sculptures are shown in sections of the genera Abelia and Lonicera. In Abelia the exine of the section Euabelia is spinulose, but that of the section Zabeliais scabrous. Likewise, in Lonicera, the exine of the section Isoxylosteum is scabrous, while thatof other sections such as Nintooa, Isika, Lonicera, subgenus Caprifolium, is spinulose. It showsthat pollen morphology is one of diagnostic characters for section division. 相似文献
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A new phenol alloside, p-hydroxyphenyl β-D-alloside, has been isolated from the leaves of Viburnum wrightii in addition to several known compounds. The structures were elucidated by spectroscopic and chemical methods. 相似文献