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    THE THERAPEUTIC EFFECT OF SOME PLANT EXTRACTS ON TOMATO MOSAIC DISEASE CAUSED BY TMV-T
    一些植物抽提液对番茄花叶病毒(TMV-T)病的治疗作用
    The results showed that when the ratio of ethanol extract to Deltamethrin was 300∶1,the ratio of acetone extract to Deltamethrin was 150∶1,the ratio of ethyl acetate extract to Deltamethrin was 300∶1 and the ratio of petroleum ether extract to Deltamethrin was 150∶1,the co-toxicity coefficient(CTC) of mixtures were the maximum.
    结果表明:4种提取物与溴氰菊酯混配均有增效作用,最佳配比分别为无水乙醇提取物∶溴氰菊酯=300∶1,丙酮提取物∶溴氰菊酯=150∶1,乙酸乙酯提取物∶溴氰菊酯=300∶1,石油醚提取物∶溴氰菊酯=150∶1;
    In this paper we reported the bioactivities of ethanol extracts from 20 medicinal plants against Rhizopertha dominica (Fab.)
    采用药膜法和滤纸药膜选择法,分别研究了20种药用植物乙醇提取物对谷蠹Rhizopertha dominica(Fab.)
    The results of the contact tests showed that the extract of Trigonelia foenum-graecum was most effective on the pest, followed by Cnidium monnieri and Acorus gramineus respectively.
    结果表明:触杀效果以葫芦巴Trigonelia foenum-graecum提取物的活性最强,蛇床子Cnidiummonnieri和石菖蒲Acorus gramineus提取物次之。
    At 0.39 mg/cm2 treatment, T. foenum-graecum extract showed 100% mortality at 48 h post-treatment. C.
    葫芦巴提取物0.39mg/cm2浓度处理48h后对谷蠹的触杀死亡率为100%,处理72h后对谷蠹的LD50为19.94μg/cm2。
    The effect of ethanol extract of Eupatorium adenophorum Spreng on growth, development and reproduction of the cotton bollworm, Helicoverpa armigera (Hübner), was bioassayed in the laboratory.
    采用室内生物测定法研究了紫茎泽兰Eupatorium adenophorum Spreng乙醇提取物对棉铃虫Helicoverpaarmigera(Hbner)生长发育和繁殖力的影响。
    The results showed that the mortality rate of H. armigera larvae was significantly higher while pupa weight and adult emergence were significantly lower than the control when the larvae fed on the diet containing the extract of E. adenophorum at the concentrations of 0.088,0.44,2.2 and 11 g/kg.
    结果表明,当给棉铃虫幼虫饲喂含紫茎泽兰提取物浓度分别为0.088、0.44、2.2和11g/kg的饲料时,棉铃虫的死亡率显著高于对照,而羽化率和蛹重均显著低于对照(P≤0.05)。
    Treatments with the extract at the concentrations of 0.08, 0.4 and 2 g/L showed attraction effect on the oviposition of the bollworm females, however, the extract treatment at the concentration of 10 g/L showed the repellent effect on the oviposition of the bollworm females.
    在棉铃虫成虫产卵实验中,0.08、0.4和2g/L紫茎泽兰提取物对产卵有一定引诱作用,而10g/L则对产卵有驱避作用。
    Imidacloprid residue in wheat straw was extracted with methanol in an ultrasonic bath and purified through a florisil column,detected by HPLC at 270 nm.
    采用超声波提取、弗罗里硅土层析柱净化、高效液相色谱(HPLC)法,在270 nm波长下,对吡虫啉在小麦植株中的残留进行了分析.
    HCB residues in soils was extracted with acetone/hexane (1∶1,v/v) under ultrasonic extraction,and cleaned up on primary secondary amine (PSA) by removing the polar matrix components or interferences.
    以丙酮-正己烷(1∶1,体积比)为提取剂,采用超声波萃取,经固相基质PSA(primary secondary amine)吸附净化后采用GC-MS选择离子模式检测。
    The better intervals of experimental condition on rapid extraction of azadirachtin were found by the way of single factor and vary levels. The extract experiment was designed by orthogonal. The statistical method disposed the results of test.
    采用单因素多水平实验找到快速萃取法提取印楝素的较好实验条件区间,用正交法设计实验,对实验结果进行统计学处理,优选出快速萃取法提取印楝素的最佳工艺条件为印楝种子和萃取溶剂甲醇之间的物料比1∶1.0(W/V);
    The inhibition activities of methanol extracts from fifteen species of mangrove plants against Fusarium oxysporum f. sp. Niveum,Pestalotia calabae Westond,Thielaviopsis paradoxa(de Seynes) V.Hohnel,Glorosprium musarum Cookeet Mass,Alternaria kikuchiana(Fr) Keissl,Mycosphaerella sentina (Fr.)
    Niveum、芒果叶枯病菌Pestalotia calabae Westond、甘蔗凤梨病菌Thielaviopsis paradoxa(de Seynes)V.Hohnel、香蕉炭疽病菌Glorosprium musarum Cookeet Mass、梨黑斑病菌Alternaria kikuchiana(Fr)Keissl、梨褐斑病菌Mycosphae-rella sentina(Fr.)
    Gray was the best,the EC50 values of its methanol extract for the above seven species of fungi were 3.32,1.04,2.57,1.44,1.63,2.66 and 1.25 mg·ml-1,respectively
    Gray、海杧果Cerberamanghas L.对供试病原真菌有明显的抑菌活性,其中以苦槛蓝的抑菌活性最为显著,其甲醇提取物对上述7种病原真菌的EC50分别为3.32、1.04、2.57、1.44、1.63、2.66和1.25 mg. ml-1。
    These two plant extracts had an inhibiting action on the germination of zoospores of downy mildew of melon and their inhibiting efficiencies were respectively 48.2% and 25.3%.
    上述2种植物提取液对甜瓜霜霉病菌游动孢子萌发的抑制率分别为48.2%和25.3%。
    Indoor pot tests of controlling the downy mildew showed that the control efficiencies at 7 days after spraying the two extracts were 51.4% and 31.3%,respectively. The field tests showed that their control efficiencies at 7 days were 48.8% and 22.6%,respectively.
    对甜瓜霜霉病的室内盆栽试验结果表明,喷雾7d后的预防效果分别为51.4%和34.3%,田间试验的防效则分别为48.8%和22.6%。
    The method B was the most suitable after comparing the 6 genome-extracted methods.
    比较6种抽提基因组DNA的方法,方法B效果理想。
    The antibacterial activities of ethyl acetate extracts with different concentration on Verticillium dahliae V43-1 was the best and the MIC was about 5 g/L.
    不同浓度乙酸乙酯提取物对4种菌的抑菌效果表明,对棉花黄萎病菌V43-1的抑菌效果最好,最低抑菌浓度约为5 g/L.
    And the aqueous extract of Dicranopteris pedata had strong allelopathy on Mikania micrantha, whose synthetic inhibitory effect (SE) was 72.47%.
    芒萁(Dicranopteris pedata)水提液对薇甘菊也表现出很强的化感作用,其抑制综合效应(SE)为72.47%。
    The results showed that the minimum inhibitive concentration(MIC) was 0.156 25 mg/mL; with the increase of garlic bulb crude extracts concentration,the inhibited circle and the inhibitive rates to mycelia growth and spore germination of the pathogen increased.
    结果表明,随大蒜鳞茎粗提物质量浓度的增加,对西瓜枯萎病菌的抑制作用增强,大蒜鳞茎粗提物的最低抑菌质量浓度(MIC)为0.156 25 mg/mL;
    The inhibitive rate to spore germination reached 100% when the concentration of garlic bulb crude extracts increased to 10 mg/mL,and the pathogen inhibited circle reached the biggest,5.7 mm,and the mycelia growth inhibitive rate reached 100% when the concentration of garlic bulb extracts increased to 20 mg/mL.
    当大蒜鳞茎粗提物的质量浓度达到10 mg/mL时,对病菌孢子萌发的抑制率达100%; 质量浓度达到20 mg/mL时,抑菌圈直径最大,为5.7 mm,对病菌菌丝生长的抑制率达到100%,与对照差异达极显著水平。
 

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