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    SPORE STAGES OF PUCCINIA CARTHAMI CDA AND ITS LIFE CYCLE
    红花锈病菌Puccinia carthami Cda.的孢子阶段及生活史研究
    ELECTRON MICROSCOPIC OBSERVATION ON THE PARASPORAL CRYSTAL AND SPORE FROM 187 STRAIN OF BACILLUS THURINGIENSIS
    苏云金杆菌187菌株伴孢晶体和芽孢的电镜观察
    Effect of Calcium -calmodulin Antagonists and Calcium Chelating Agents on Germination of Fungus Spores of Corn Leaf Blight
    钙调素拮抗剂及钙螯合剂对玉米大斑病病原孢子萌发的影响
    Method of Identifying Callus Resistance ──Quantitative Inoculation by Single Spore
    愈伤组织抗病性鉴定方法─—定量分生孢子纸片接种法
    Separation of Bt 8010 Spore From Its Fermented Liquior With Ultrafiltration
    应用超滤技术分离Bt8010发酵液
    Streptomyces 702 can obviously result in condensing of the plasma in the mycelium cell and strongly inhibit sclerotium and spore germination,a complete inhibition takes place when the dosage is at the level of 15.11 mg/L and 10.64 mg/L.
    能显著的引起菌丝细胞内原生质凝集; 对菌核及孢子的萌发有较强的抑制作用,15.11mg/L和10.64mg/L完全抑制菌核和孢子的萌发;
    It has a notable inhibition effect on spore formation,a complete inhibition takes place when the dosage is at the level of 22.66 mg/L.
    对孢子形成也有一定的阻碍作用,22.66mg/L完全抑制孢子形成。
    We got 75.86% death rate after 10 days treated by 1.6×10~7 spores/mL of the strain 022017+# in the field.
    田间试验,1.6×107个/mL浓度的022017#蝉拟青霉防治小菜蛾的校正死亡率可达75.86%。
    Spore germination tests showed that the fermentation of H32 exhibited the strongest antibiotic activity against Bipolaris sorokiniana,Exserohilum turcicum,Alternaria alternata,the EC50 values were 25.5,28.9,29.9 mL/L,respectively.
    H32菌株发酵液对小麦根腐病菌、玉米大斑病菌、烟草赤星病菌孢子萌发的EC50值分别为25.5、28.9和29.9mL/L。
    The results of the inhibition of spore germination indicated that the fermentation products exhibited obvious inhibition rate against Alternaria longipes,the EC50 values was 62.5328 μg/mL;
    抑制孢子萌发试验表明:菌丝体甲醇提取物对烟草赤星病菌的毒力较好,其EC50仅为62.5328μg/mL;
    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。
    5931 and 7293 fungi isolates of the seeds from the two counties were cultured and the spore-produce fungus were 3894 and 5205 respectively,which were identified into 15 generas,4 subphylums.
    培养分离出真菌5931和7293株,其中产孢真菌分别为3894株和5205株,鉴定分属于15个属,4个亚门。
    Cladosporium,Alternaria and Phoma are the dominant species of the two counties and the sum of them account for 81.25 % and 85.94 % in spore-producing fungus,respectively.
    2县青稞籽粒的真菌优势种都是C ladosporium、Alternaria和Phoma,优势种总和分别占尼木、林周2县产孢真菌的81.25%、85.94%。
    A strong antifungal activity on mycelial growth and spore germination of Botrytis cinerea with EC50 values of 680 mg/L and 162 mg/L was observed in oligochitosan.
    结果表明,聚合度为2~20的壳寡糖Ⅰ对供试的4种植物病原真菌均有一定的抑制作用,抑制强度随壳寡糖Ⅰ浓度的升高而增强,壳寡糖Ⅰ可明显抑制番茄灰霉菌菌丝的生长(EC50=680 mg/L)和孢子的萌发(EC50=162 mg/L);
    the oil formulation by ULV spraying was the best and 1.5×1013,2.0×1013spores per hectare were optimal,which had a good control effect of mortality attained 95.4% and 100%,white cadaver rate were 84.6% and 90.2%,damage rates of leaf were 39.7% and 32.3%.
    对杨树舟蛾最好的剂型是超低量油剂和超低量复合油剂,其中超低容量油剂以施菌量1.5×1013或2.0×1013个. hm-2为宜,校正死亡率达95.4%和100%,白僵率达84.6%和90.2%,树叶受害率39.7%和32.3%;
    ACCC30111 strain of beauveria bassiana was chosen to the diamondback moth (Plutella xylostella) under 25℃ and 75% humidity conditions to study its killing effect. Three different concentrations of 1×107 the spore/ml,1×108 spore/ml,1×109 spore/ml were used.
    在25℃,75%的湿度条件下,采用浸叶法测定1×107孢子/ml、1×108孢子/ml、1×109孢子/ml三种不同浓度下,白僵菌(ACCC30111菌株)孢悬液对小菜蛾的致病力。
    The time of keeping high humidity(t) was longer,the spore production capacity(y) was bigger. The regression equation was y=exp[-14.59×exp(-0.2t)].
    保湿时间越长,病斑产孢越多,保湿时间(t)与产孢量(y)关系的回归方程为y=exp[-14.59exp(-0.2t)]。
    Under 20 ℃,parasitic rates of B.bassiana to M.alternatus by three kinds of concentration of B.bassiana spore suspension were 58%、95% and 100% respectively.
    20℃时3种浓度剂量的白僵菌孢悬液在松墨天牛体内有效继代校正宿存率均达最高,分别为58%、95%、100%。
    The screening of single-spore inhibiting activity showed that the inhibiting activity of B-Q2-7 was the best,the inhibition rate on Magnaporthe grisea and Botrytis cinerea could reach 87.4% and 91.6% respectively.
    单孢颉颃性筛选表明B-Q2-7的抑菌活性最强,对稻瘟病菌和番茄灰霉病菌的抑制率分别达到87.4%和90.6%。
 

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