共查询到19条相似文献,搜索用时 109 毫秒
1.
为探讨国产豆科(Leguminosae)鸡血藤属(Callerya Endl.)和崖豆藤属(Millettia Wight et Arn.)的属间和属下分类,在扫描电镜下观察了鸡血藤属11种5变种和崖豆藤属6种2变种的花粉形态。结果表明,鸡血藤属和崖豆藤属植物的花粉都是3孔沟或3沟的单粒,辐射对称,赤道面观主要为类球形或近扁球形,极面观主要为圆形或圆状三角形。鸡血藤属植物的花粉大小为中等,而崖豆藤属的为小型。两属植物花粉的沟膜呈现或多或少的隆起或凹陷,附有细微的或粗糙的颗粒,花粉外壁纹饰可分为6种类型。花粉形态不支持Schot合并所有灰毛鸡血藤复合体中除了亮叶鸡血藤[C.nitida(Benth.)R.Geesink]与喙果鸡血藤[C.cochinchinensis(F.P.Metcalf)Z.WeiPedley]为灰毛鸡血藤[C.cinerea(Benth.)Schot]的观点,花粉大小支持将鸡血藤属从广义崖豆藤属中分离。 相似文献
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通过对香花崖豆藤(Millettia dielsiana)、钝药野木瓜(Stauntonia leucantha)、三叶木通(Akebia trifoliate)、哥兰叶(Celastrus gemmatus)、大血藤(Sargentodoxa cuneata)和小血藤(Schisandra propinqua)等野生攀援植物的习性、特点解析以及园林应用综合评析,得出这6种攀援植物的园林综合应用能力的强弱:香花崖豆藤钝药野木瓜三叶木通小血藤大血藤哥兰叶,为丰富本地区城市园林垂直绿化植物种类提供参考。 相似文献
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中国商陆属植物的校订 总被引:3,自引:0,他引:3
校订了我国商陆属植物,计有4种,Phytolacca clavigera W.W.Smith是多雄蕊商陆的异名,Ph.hunanensis Hand.-Mazz和Ph.zhejiangensis W.T.Fan是日本商陆的异名。Ph.esquirolii Levl.不是本属植物,而是崖豆藤野桐(大戟科)。 相似文献
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校订了我国商陆属植物,计有4种。Phytolac caclavigera W.W.Smith是多雄蕊商陆的异名,Ph.hunanensis Hand.-Mazz.和Ph.zhejiangensis W.T.Fan是日本商陆的异名。Ph.Esquirolii Lévl.不是本属植物,而是崖豆藤野桐Mallotus millietii Lévl.(大戟科). 相似文献
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本文对茑尾属Iris22个种(基本上包括了各个亚属的代表)及其近缘属干属Belamcanda的射干B.chinensis(L.)DC.进行了根茎的异黄酮类成分的比较分析研究。结果表明,茑尾属植物和射干中普遍具有异黄酮类成分,这是它们的特征性成分之一。根据化学成分的特征,茑尾属可以分为两大类群:只含世黄酮甙元的类群和既含异黄酮甙又含甙元的类群。从化学成分的分布特征来看,无附属物亚属subgen.Li 相似文献
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描述了崖豆藤伞锈菌大头变种(新变种)Ravenelia millettiae var.major var.nov.。建立了新组合红豆细柄锈菌Atelocauda ormosiae com.nov.(≡Uromyces ormosiae)。报道了四个中国新记录:海南崖豆藤Millettia pachyloba上的刚刺品字锈菌Hapalophragmium setulosum、假通草Euaraliopsis ciliata上的刺通草花孢锈菌Nyssopsora trevesiae、黄槐决明Cassia surattensis上的鲍姆伞锈菌Ravenelia baumiana和黄豆树Albizia procera上的克莱门斯伞锈菌Ravenelia clemensae。 相似文献
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Yankep E Mbafor JT Fomum ZT Steinbeck C Messanga BB Nyasse B Budzikiewicz H Lenz C Schmickler H 《Phytochemistry》2001,56(4):363-368
Three new isoflavonoids, griffonianone A (1), B (2) and C (4) were isolated from the root bark of Millettia griffoniana, along with the known maximaisoflavone G (5) and 7-hydroxy-6-methoxy-3',4'-methylenedioxyisoflavone (6). Their structures were assigned on the basis of spectroscopic data and chemical transformations. 相似文献
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Flavonoids from the roots of Millettia erythrocalyx 总被引:2,自引:0,他引:2
From the roots of Millettia erythrocalyx, 6-methoxy-[2",3":7,8]-furanoflavanone, 2,5-dimethoxy-4-hydroxy-[2",3":7,8]-furanoflavan, and 3,4-methylenedioxy-2',4'-dimethoxychalcone were isolated, along with ten other known flavonoids. Their structures were elucidated on the basis of analyses of their spectroscopic data. 相似文献
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Ngandeu F Bezabih M Ngamga D Tchinda AT Ngadjui BT Abegaz BM Dufat H Tillequin F 《Phytochemistry》2008,69(1):258-263
Three prenylated rotenoids, elliptol, 12-deoxo-12alpha-methoxyelliptone and 6-methoxy-6a,12a-dehydrodeguelin were isolated from the twigs of Millettia duchesnei, together with the known compounds, 6a,12a-dehydrodeguelin, 6-hydroxy-6a,12a-dehydrodeguelin, 6-oxo-6a,12a-dehydrodeguelin, elliptone, 12a-hydroxyelliptone and eriodictyol. Their structures were elucidated on the basis of spectral data and comparison with information reported in the literature and with authentic specimens for some known compounds. The full NMR data of 6-oxo-6a,12a-dehydrodeguelin and 6-hydroxy-6a,12a-dehydrodeguelin are reported here for the first time. 相似文献
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From the pods of Millettia erythrocalyx, 2'-hydroxy-3,4-dimethoxy-[2',3':4',3']-furanochalcone, 2',3-dihydroxy-4-methoxy-4'-gamma,gamma-dimethylallyloxychalcone, (-)-(2S)-6,3',4'-trimethoxy-[2',3':7,8]-furanoflavanone, 3',4'-methylenedioxy-[2',3':7,8]-furanoflavonol and 6,3'-dimethoxy-[2',3':7,8]-furanoflavone were isolated, along with six other known flavonoids. Their structures were elucidated through analysis of their spectroscopic data. 相似文献
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Wei Zhi 《植物分类学报:英文版》1985,23(4):275-292
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西双版纳不同土地利用方式下土壤氮矿化作用研究 总被引:21,自引:4,他引:17
氮在森林生态系统的养分循环中很重要,常把土壤氮矿化速率作为生态系统中氮有效性和氮损失的指标.在云南省中国科学院西双版纳热带生态站周围,用顶盖埋管法,对季风常绿阔叶林、季节雨林、橡胶林、受过严重干扰的季节雨林、鸡血藤次生林和旱谷地的氮矿化速率进行研究.结果表明,在6种土地利用方式下,净氮矿化速率和硝化速率由大到小依次为受过严重干扰的季节雨林>鸡血藤次生林>季节雨林>季风常绿阔叶林>橡胶林>旱谷地.在西双版纳地区橡胶林和旱谷地被认为是受人为干扰较严重的土地利用方式,这两种土地利用方式与各种森林下土壤中的氮矿化速率和氮储量相比均低,达到显著水平.较低的氮矿化速率与土壤本底氮储量低有关,也与土壤中真菌数量较少有关.对西双版纳6种常见土地利用方式的土壤氮储量和氮循环速率的研究表明,受过严重干扰的季节雨林在恢复多年后土壤中养分的转化速率与原生林接近,而林地被转化为农业或经济林用地后氮储量和氮矿化速率均显著降低. 相似文献
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Two new rotenoids, named millettiaosas A–B (1–2), together with four known compounds were isolated from the roots of Millettia speciosa. Their structures were elucidated on the basis of spectroscopic analysis including 1D and 2D NMR techniques and HRESIMS. Evaluation of the two new compounds for cytotoxicity against four human cancer cell lines (MCF-7, HCT-116, A549 and HepG-2) showed moderate activities (10 μM < IC50 < 26 μM). 相似文献
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Zhu‐Qiu Song Qian Xia Kai Zhang Bo Pan Jian‐Wu Li Dong‐Xian Xu Shuai Liao Shi‐Jin Li 《Nordic Journal of Botany》2019,37(3)
Millettia weizhii sp. nov. (Fabaceae), a tree species bearing pods with 4 wings is described and illustrated from a limestone area in Yunnan, China. Fruiting specimens of the new species were previously identified as Millettia tetraptera Kurz, a species recorded from Myanmar and India (West Bengal), but examination of specimens and data from our field survey show that the new species is easily distinguished by having longer and stipitate pods, much shorter pseudoracemes with 2 flowers at each node, white and longer corolla, triangular calyx lobes and more and narrower leaflets. The new species should be placed in the Merrillii/Xylocarpa‐group of Millettia sect. Fragiliflorae Dunn based on morphological characters. 相似文献
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Michael D. Wasserman Colin A. Chapman Katharine Milton Jan F. Gogarten Daniel J. Wittwer Toni E. Ziegler 《Hormones and behavior》2012
Numerous studies have examined the effects of anthropogenic endocrine disrupting compounds; however, very little is known about the effects of naturally occurring plant-produced estrogenic compounds (i.e., phytoestrogens) on vertebrates. To examine the seasonal pattern of phytoestrogen consumption and its relationship to hormone levels (407 fecal samples analyzed for estradiol and cortisol) and social behavior (aggression, mating, and grooming) in a primate, we conducted an 11-month field study of red colobus (Procolobus rufomitratus) in Kibale National Park, Uganda. The percent of diet from estrogenic plants averaged 10.7% (n = 45 weeks; range: 0.7–32.4%). Red colobus fed more heavily on estrogenic Millettia dura young leaves during weeks of higher rainfall, and the consumption of this estrogenic item was positively correlated to both their fecal estradiol and cortisol levels. Social behaviors were related to estradiol and cortisol levels, as well as the consumption of estrogenic plants and rainfall. The more the red colobus consumed estrogenic plants the higher their rates of aggression and copulation and the lower their time spent grooming. Our results suggest that the consumption of estrogenic plants has important implications for primate health and fitness through interactions with the endocrine system and changes in hormone levels and social behaviors. 相似文献