Objective: To provide a minimum sample size approach and a sequential sampling approach for testing whether the sporozoite rate has exceeded the critical level of malaria epidemics using the pool sampling method.

目的：給出基于混合樣本的最小檢測次數法和序貫檢驗法狼友色成人网在线播放视频网站免费，以檢驗子孢子陽性率是否超過導致瘧疾流行的臨界水平久久91精品综合国产91久久。

Teliospore appeared on susceptible varieties earlier than on resistant varieties.

感病品種比抗病品種出現冬孢子的時間早在线看片国产无码图片，數量多91在线精品yy，但體積小。

Seed cones 5-10(-12) cm, often a few basal cones persistent; umbo slightly projecting, ending in a straight, minute prickle; needles (2 or)3(-5) per bundle

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On the basis of determining their resistant spectrum, CY21, CY23, CY27, CY29, CY30, CY31, CY32, Su-11, Su-14 were used to investigate the resistant components at seeding stage, such as latent period, infection efficiency, uredinium length, sporulation capacity, period of spore production and severity. Also, two equal weight races' mixture CY27:CY30, CY27:CY31, CY27:CY32, CY31:Su-4, CY30:Su-11 were continued to reproduce six generations of Libellula and Xiannong 4 respectively, and the ration changes of each race were tested.

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The results of mycelium growth rate showed that the value of EC50 against Bipolaria maydis, Macrophoma kawatsukai, Fusanrium oxysporum, Fusarium solaid and Fusarium oxysporium were 0.979, 0.505, 1.733, 0.425 and 0.849mL/L. The result of spore germination proved that the value of EC50 against Alternaria longipes, Exserohilum trucicum, Fulua fulua and Fusarium solani were 1.709, 0.375, 0.445 and 1.333mL/L.

該菌株發(fā)酵液對玉米小斑病菌、蘋果輪紋病菌日韩一区二区三区无码不卡毛片、棉花枯萎病菌日本e代黄色网、馬鈴薯干腐病菌和西瓜枯萎病菌菌絲的生長抑制中濃度(EC50)分別為0.979，0.505黄页网站在线播放免费，1.733一级二级毛片18岁禁看视频黄,，0.425和0.849mL/L，對玉米大斑病菌欧洲性交网、番茄葉霉病菌黄大片视频、馬鈴薯干腐病菌和煙草赤星病菌的孢子萌發(fā)抑制中濃度(EC50)分別為1.709，0.375影音先锋在线网站，0.445和1.333mL/L国内自拍日韩高清视频在线。

It was proved that low concentration Fe2+ can acce lerate its growth and development,but high Fe2+may lead to seedlings defor mity, make the cells become small and the seedlings divide into monospores again and again.

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Leaves directed forward and closely appressed on upper side of branchlets, spreading and almost pectinately arranged on lower side, not parallel sided; seed scales at middle of cones obovate-oblong or rhombic, distal margin usually recurved, sometimes elo

向前指引的葉和在上面邊的小枝上接近貼伏日韩伦理片精品视频网站免费，平展和幾乎pectinately排列在下部邊，不與被站在一起相似黄色视频在线免费看链接；種鱗孢子葉球倒卵狀長圓形或菱形免费日本黄色，下彎的上部邊緣通常，有時elo的在中部 15 Picea brachytyla 麥吊云杉

The comparison test of this new methodwith spray inoculation method was conducted. The results showed the former method could increase the incidence ofdisease and uniformity than the latter one. Used cotyledon-brushing with conidial suspension and fungicide foliarspraying method, the EC 50 values of hexaconazole, myclobutanil, triadimefon, thiophanate-methyl and chlorotha lonil to Sphaerotheca fuliginea treated in different time after inoculation were determined; the results showed that 96 h was better time for disease severity evaluating.

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Leaves glossy deep green adaxially, narrowly linear-lanceolate, straight or slightly falcate, 0.8-6.5(-7) cm × 1.5-5 mm, midvein green abaxially, 0.3-1.2 mm wide, flat with median longitudinal keel throughout, stomatal bands present on both surfaces, bands on adaxial surface 0.5-1.5 mm wide, of 7-28 rows of stomatal, white powdery or not, bands on abaxial surface 1.2-2.8 mm apart, 0.3-0.8(-1) mm from leaf margin, not or rarely white powdery, base decurrent, margin denticulate, sometimes indistinctly so, especially on old trees, with 18-55(-90) teeth per side, apex usually symmetric and spinescent, spine 0.3-2 mm. Pollen cone fascicles terminal, 1-3(-5) together, broadly obovoid, each of 8-20 cones, occasionally a few also around base of seed cone; peduncle 2-4 mm; cones narrowly oblong-conical.

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Any of various coniferous evergreen trees of the genus Tsuga of North America and eastern Asia, having small cones and short, flat leaves with two white bands underneath.

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