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1.
Antibacterial activity of Picrasma javanica 总被引：1，自引：0，他引：1
The methanol extracts of Picrasma javanica, leaves, seeds, stem and root barks were partitioned (petrol, dichloromethane, ethyl acetate, butanol). All obtained extracts and fractions showed a broad spectrum of antibacterial activity, while none was active against the tested moulds. 相似文献
2.
Anti-microbial activity of Bidens pilosa, Bischofia javanica, Elmerillia papuana and Sigesbekia orientalis. 总被引：1，自引：0，他引：1
The ethanol extracts of Bidens pilosa (whole plant), Bischofia javanica (leaves), Elmerillia papuana (root bark) and Sigesbekia orientalis (whole plant) were partitioned (petrol, dichloromethane, ethyl acetate). The crude ethanolic extracts and all the obtained fractions showed a broad spectrum of antibacterial activity, the ethyl acetate fractions and the petrol fraction of E. papuana being the most effective. No activity was observed against the tested moulds. 相似文献
3.
以香椿（Toona sinensis）、秋枫（Bischofia javanica）实生种子苗为试验材料,研究干旱胁迫下丛枝菌根化香椿、秋枫幼苗叶片质膜透性、游离脯氨酸含量及超氧化物歧化酶（SOD）活性的变化.结果表明：随着干旱胁迫程度加重及胁迫时间延长,香椿、秋枫幼苗叶片质膜透性、游离脯氨酸含量呈增加趋势,SOD活性在胁迫处理4天时明显增加,之后随着胁迫时间延长无明显变化趋势.中度干旱胁迫（田间持水量40％）处理20天时,菌根化香椿、秋枫幼苗叶片质膜透性、游离脯氨酸含量及SOD活性均高于非菌根化苗.这说明,接种丛枝菌根能有效促进香椿、秋枫幼苗生理抗旱性,且干旱胁迫程度越重效果越显著. 相似文献
4.
Four Acacia species were tested for their susceptibility to the root-knot nematode, Meloidogyne javanica, commonly found in
sahelian areas. Faidherbia albida and Acacia senegal were resistant to this nematode. On the contrary, A. raddiana, A. nilotica
and A. mangium were susceptible. Among these three species, the growth of A. nilotica and A. mangium was inhibited by M. javanica
but A. raddiana was tolerant. The rhizobial symbiosis with F. albida and A. senegal was stimulated by the nematode. The population
build-up of the root-knot nematode induced by tree species in agroforestry systems is discussed.
This revised version was published online in June 2006 with corrections to the Cover Date. 相似文献
5.
Five different dry and five green plant leaves were tested against Meloidogyne javanica and Rotylenchulus reniformis, as bio-agents
in controlling these nematodes infecting sunflower. Data generally, indicated that all the tested manures significantly (P≤0.05)
reduced the total number of nematodes in root and soil. The best materials were datura dry leaves on M. javanica and lime
dry leaves on R. reniformis which gave very good results against nematodes (86.4 and 95.1% female reduction, respectively).
Plant growth was significantly (P≤0.05) better, in most cases, in shoots, roots and flowering discs weight. 相似文献
6.
7.
The antidiarrhoeal effects of the methanolic extract of Rhus javanica ripen fruits (MERJ) were investigated by employing four experimental models of diarrhoea in Swiss albino mice. MERJ treated mice, showed significant reduction in the faecal output and protected them from castor oil-induced diarrhoea. The extract also reduced the intestinal fluid secretion induced by MgSO4 and gastrointestinal motility after charcoal meal administration in the albino mice. No mortality and visible signs of general weakness was observed in the mice following the test extract administration up to 2000 mg/kg dose. 相似文献
8.
树干注射法防治灰同缘小叶蝉试验 总被引：1，自引：0，他引：1
灰同缘小叶蝉(Coloana cinerea Dworakowska)是秋枫的重要害虫.用16％虫线清乳油、20％叶蝉散乳油、30％氯胺磷乳油、40％乐果乳油和3％吡虫啉微乳剂原药对灰同缘小叶蝉进行树干注射防治试验,结果表明:40％乐果乳油施药后7d和14 d,防治效果为98.78％和97.88％,防效良好;30％氯胺... 相似文献
9.
The flavonoids isolated from the stems of Rhus javanica var. roxburghiana, taxifolin (1), fisetin (2), fustin (3), 3,7,4'-trihydroxyflavanone (4) and 3,7,4'-trihydroxyflavone (5) caused breakage of supercoiled plasmid pBR322 DNA in the presence of Cu(II). Cu(I) was shown to be an essential intermediate by using the Cu(I)-specific sequestering reagent neocuproine. The Cu(II)-mediated DNA scissions induced by 1, 2, 3 and 5 were inhibited by the addition of catalase and exhibited DNA strand break by the addition of KI and superoxide dimutase (SOD), while in the Cu(II)-mediated DNA scissions induced by 4 was inhibited by the addition of KI, SOD, and catalase. It is concluded that 1, 2, 3, and 5 can induce H(2)O(2) and superoxide anion, while 4 can induce OH() and H(2)O(2) and subsequent oxidative damage of DNA in the presence of Cu(II). 相似文献
10.
Journal of Pest Science - In einem Labortest wurde die Wirksamkeit des NematodenDiplogaster sp. als Prädator der Zweitlarven der WurzelnematodenMeloidogyne javanica undTylenchulus... 相似文献
11.
Acclimation in seedlings of Bischofia javanica Blume, which are commonly found in canopy gaps in the moist forests of tropical Asia, to a change in light availability was examined in a controlled environment simulating forest shade and daylight. Seedlings were grown in a high (1000 micro mol m(-2) s(-1); red/far-red, 1.45) or low (40 micro mol m(-2) s(-1); red/far-red, 0.10) light regime and then transferred to the contrasting light environment for nine weeks. Control seedlings were maintained in the same light regime throughout the study. The availability of light influenced relative growth rate through morphological and physiological adjustments. Transferred seedlings retained the leaves that had been developed before transfer, and no leaf-shedding was observed till the end of the experiment. Leaves formed in the new light regime were physiologically and morphologically identical to those of the corresponding controls. High-light seedlings transferred to low light displayed significantly lower relative growth rate than the low-light controls because of a lower leaf area ratio carried over from the previous high-light environment. A reverse pattern of response with respect to relative growth rate was observed for the low-light seedlings transferred to high light compared to the high-light controls. The higher relative growth rate in the low-light seedlings transferred to high light was the result of higher net assimilation rate and higher leaf area ratio. The higher leaf area ratio in the low-light seedlings transferred to high light was the consequence of the effects of previous environment, and the relatively lower net assimilation rate in the high-light control seedlings was, at least partly, due to the effects of self-shading rather than to the photosynthetic capacity of the leaves. The results suggest that the species has a wide acclimation potential to a change in light availability that might occur in nature following gap creation or canopy closure. 相似文献
12.
M. E. Abdel Hamid H. H. Ramadan Dr. F. M. Salem G. Y. Osman 《Journal of pest science》1981,54(6):81-82
Zusammenfassung Baumwolle, Weizen, Mais, Sojabohne, Zwiebel, Kichererbse und Sesam wurden hinsichtlich ihrer Anfälligkeit gegen die WurzelnematodenMeloidogyne javanica undM. incognita incrita untersucht. Sesam und Mais waren gegen beide Nematodenarten resistent. Baumwolle wurde vonM. javanica nicht befallen. Dagegen wurden Zwiebel und Sojabohne von diesem Nematoden stark geschädigt. Die statistische Analyse zeigte signifikante Befallsunterschiede zwischen den Wirtspflanzen undMeloidogyne-Arten.
Mit 2 Tabellen 相似文献
Susceptibility of certain field crops to some Nematoda infection, Meloidogyne javanica (Treub) and M. incognita acrita (Kofoid & White) chitwood
Varietal susceptibility of certain field crops were tested. Sesame and maize were resistant toM. javanica andM. incognita acrita infection. Cotton was resistant toM. javanica only. Onion and soybean were highly infected withM. javanica in comparison with the other tested hosts. Soybean also was highly infected withM. incognita acrita. Wheat showed the presence of the lowest of nematode population of the two species on its roots. Severity of galls was paralleled to the mentioned nematode populations.Statistical analysis of the data indicates that there were significant differences between the tested hosts. Also, the interaction between nematode species and hosts was significant.
Mit 2 Tabellen 相似文献
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14.
7个华南园林树种的耐盐性研究 总被引：2，自引：0，他引：2
文章通过比较不同NaCl浓度的水培条件下红桂木(Artocarpus nitidus ssp.lingnanensis)、秋枫(Bischofiajavanica)、毛麻楝(Chukrasia tabularis var.velutina)、黄槿(Hibiscus tiliaceus)、塞楝(Khayasenegalensis)、竹柏(Nageia nagi)和蒲桃(Syzygium jambos)等7个树种的存活率和生理指标,分析其耐盐能力。结果表明:随着盐浓度的升高,各树种的存活率、PSⅡ反应中心光化学效率(Fv/Fm)均呈现下降趋势,而叶片相对电导率、叶片Na+含量呈现上升趋势;文中三个生理指标在评价耐盐性的贡献率接近;7个树种中,黄槿为强抗盐性,远高于其余树种,竹柏、塞楝为中等抗盐性;红桂木、秋枫、毛麻楝为弱抗盐性植物,蒲桃为对盐敏感植物。 相似文献
15.
以云浮市东山森林公园14种主要造林树种为研究对象,采用套种补植、人工造林2种造林方式和穴状抚育或全面割灌+穴状抚育的抚育方式组合,分析4种经营模式下14种阔叶树种的生长情况.结果表明:采用相同的造林方式时,各树种在全面割灌+穴状抚育的抚育方式下胸径生长较好,但对树高的生长影响不显著;采用相同的抚育方式时,采用套种补植造林的樟树(Cinnamomum camphora)、木荷(Schima superba)、铁冬青(Ilex rotunda)、红苞木(Rhodoleia championii)、秋枫(Bischofia javanica)和米老排(Mytilaria laosensis)胸径和树高生长大于人工造林的,黄槐(Cassia surattensis)、降香黄檀(Dalbergia odorifera)和羊蹄甲(Bauhinia purpurea)人工造林的胸径和树高生长大于套种补植的;云浮市东山森林公园建设的适宜基调树种为米老排、火力楠(Michelia macclurei)、木荷(Schima superba)、樟树、秋枫和降香黄檀,主题树种为铁冬青、黄槐、大叶紫薇(Lagetstroemia speciosa)和美丽异木棉(Ceiba speciosa),以及应用套种补植结合全面割灌+穴状抚育的经营模式. 相似文献
16.
广州市8种常用园林植物生态特性比较 总被引：2，自引：0，他引：2
对广州市8种常用园林植物的固碳释氧、降温增湿、杀菌滞尘和吸收S、Cl能力等进行对比研究。结果表明:单位叶面积的固碳释氧量以红花羊蹄甲最大;单位绿化面积则以尖叶杜英最大;降温增湿效果则以红花羊蹄甲最大;叶片吸收S量以尖叶杜英和大叶榕较大,细叶榕、秋枫和高山榕较小,叶片吸收Cl的能力则与之相反;尖叶杜英和秋枫的滞尘能力强;大叶榕的抑菌率最高,达(85.4±1.7)%。综合而言,尖叶杜英生态功能最强,秋枫最弱。 相似文献
17.
大花五桠果、秋枫、大叶合欢、南洋楹 总被引：1，自引：0，他引：1
常绿乔木,高10～30m。干直,树皮灰色,平滑;分枝低,幼枝具明显叶痕和硬毛,顶芽被棕色长绢毛。树冠广卵形或卯圆形。叶互生,革质,叶片倒卵状长圆形,长10～40cm,宽5～15cm,顶端钝,基部阔楔形,边缘有波状小锯齿,侧脉羽状整齐而近平展,通常有15～22对,在背面明显隆起,并被较密硬毛;叶柄长2．5～4．5cm,被锈色硬毛。总状花序顶生,有花2～4朵;花蕾球形,直径约4cm;花萼5片,肉革质,淡黄绿色;花瓣5片,黄色。倒卯形。长5．5～7．0cm,花冠直径12～15cm;雄蕊多数,淡橙红色;心皮熟时红色, 相似文献
18.
将轻质材料(能浮于水)制成多孔蜂窝状,蜂窝状孔除了有助于植物根系的附着外,同时有利于微生物的挂膜,植物、植物根系和微生物膜团形成一个综合生态场.先在轻质材料上钻孔(往往不钻穿),植物栽种前,在轻质材料浸水面上培养驯化微生物菌膜,后在其背水面栽培湘南典型的水生植物,通过微生物菌膜与栽种植物所形成的综合生态场的综合作用,净... 相似文献
19.
The present study was designed to evaluate the antimicrobial activity of ethanolic extracts of 15 Indian mosses. The antibacterial activity of ethanolic extracts was investigated against five G(+) and six G(-) bacterial strains. Antimycotic activity was assayed against 8 fungi. Sphagnum junghuhnianum, Barbula javanica, Barbula arcuata, Brachythecium populeum, Brachythecium rutabulum, Mnium marginatum and Entodon cf rubicundus were found to be most active against all the organisms. 相似文献
20.
在西江中下游,对32个阔叶树种进行造林生长比较试验,4年生林木调查结果表明:不同树种间的造林保存率存在着明显的差别,除幌伞枫、秋枫、凤凰木、小叶杜英、木棉、鸭脚木保存率较低外,其余树种保存率都较高,达93%以上;树种间树高、胸径、冠幅生长量差异均达到极显著水平,且各性状之间的相关均达到极显著水平,西南桦、红胶木、黎蒴、红荷木、红椎、荷木、锥栗、仪花、樟树、火力楠、蒲桃在树高、胸径、冠幅生长上都表现较好,青梅、小叶杜英、腊肠树、猫尾木、秋枫、木菠萝都表现较差。在生长量差异极显著的基础上,结合这32种阔叶树种的生物学特性及生态学特性进行综合评价分析,进行速生阔叶树种的选择、水土保持林、水源涵养林造林树种的选择以及低产林、残次林林分改造树种的选择。 相似文献