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powdery mildew     
相关语句
  白粉病
     cDNA library construction of Triticum aestivum-Haynaldia villosa 6VS/6AL translocation line, and molecular cloning of powdery mildew resistance relative genes in 6VS/6AL translocation line
     小麦—族毛麦6VS/6AL易位系叶片cDNA文库构建及6VS/6AL易位系中抗白粉病相关基因的克隆
短句来源
     Study on the application of molecular marker technique in breeding wheat for powdery mildew resistance and constructing DNA fingerfrinting of wheat
     分子标记技术在小麦抗白粉病育种及指纹图谱分析中的应用研究
短句来源
     Cloning, Characterization, Mapping and Expression Analysis of Powdery Mildew Resistance Relative Genes in Wheat
     小麦白粉病抗性相关候选基因克隆、特征分析、定位及表达研究
短句来源
     Isolation and Characterization of Wheat Powdery Mildew Resistance Gene Homology Sequence and Study on Molecular Marker
     小麦抗白粉病基因同源序列的分离鉴定及分子标记的研究
短句来源
     Discovery of Novel Genes Conferring Resistance to Wheat Powdery Mildew
     小麦抗白粉病新基因的发现
短句来源
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  白粉菌
     Because 99-2439 was highly resistant tomixed fungi and 5 single spore isolates of B. graminis, the powdery mildew resistance gene of 99-2439 was different from Pm5a of Hope/8Cc, which was highly susceptible to all 21 isolates of B.graminis in China.
     由于携带Pm5a的Hope/8Cc对中国的21个小麦白粉菌分离菌株均高度感病,而99-2439高抗混和白粉菌和5个单孢分离菌株,所以,99-2439所携带的抗白粉病基因不同于Pm5a。
短句来源
     Their fungitoxity to powdery mildew were tested. The results demonstrated that Ec50 of TS-86 was 688.68 times and Ec90 was 386.53 times.
     用生物测定法对TS-86和TS-109的毒力进行测试,计算得出TS-86对黄瓜白粉菌的Ec50为688.68倍,Ec90为386.53倍;
短句来源
     TaEDR1 gene, which encodes a MAP kinase kinase kinase (MAPKKK), was isolated from a powdery mildew resistant wheat line 99/2439. To investigate the function of TaEDR1 gene in resistance responses to Blumeria graminis (DC.)
     品系99/2439中分离到一个编码促分裂原蛋白激酶激酶激酶的新基因TaEDR1。 为了研究TaEDR1基因在小麦抗白粉菌(Blumeriagraminis(DC.)
短句来源
     The conidia of powdery mildew were inoculated on the wheat seedlings growing in tube containing 50ppm benzimidozole and 1.5% agaragar.
     本文报道将小麦白粉菌的分生孢子接种于生长在含50ppm苯骈咪唑的1.5%琼脂培养基试管幼苗中,于1-5℃不加光照的冰箱中保存。
短句来源
     Our purpose is to identify early expressing genes induced by powdery mildew (Erysiphe graminis DC) in wheat and we hope to elucidate the possible resistant mechanism of wheat.The harvest time points include 0.5, 1, 3, 6, 12, 16, 20 hai (hours after inoculation), which are crucial time-points for the Pm2-mediated hypersensitive response, were determined according to Li et al.
     根据本实验室李爱丽等对白粉菌侵染小麦细胞学的研究(Plant Pathology,2005,In pressed)以及相关文献我们确定了0.5、1、3、6、12、16、20hai(hours after inoculation,接种后小时)7个时间点为取材时间点。
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  白粉病菌
     The virulent genes of wheat powdery mildew (Erysiphe graminis f. sp. Tritici) were studied in eastern region of Heilongjiang province in 2004. The result showed that the virulent frequency of V1, V3a, V3b, V3c, V3f, V5, V5(Mli), V6, V7, V8 was high (>93.6%);
     2004年的研究结果表明,黑龙江省东部地区小麦白粉病菌群体中,V1、V3a、V3b、V3c、V3f、V5、V5(Mli)、V6、V7和V8频率较高(>93.6%);
短句来源
     Powdery mildew, caused by Uncinula necator (Schw.)
     葡萄白粉病是由葡萄白粉病菌[ Uncinula necator (Schw.)
短句来源
     Preparing and localization of colloidal gold-labeled β-1,3-glucan during interaction between wheat and powdery mildew pathogen
     胶体金标记小麦与白粉病菌中β-1,3-葡聚糖酶底物的制备及定位
短句来源
     Localization of β-1,3-glucan during interaction between wheat and barley and their powdery mildew pathogens
     小麦与白粉病菌互作中β-1,3-葡聚糖的细胞定位
短句来源
     The physiological races of wheat powdery mildew were mainly constituted of race 1,5,15,115,311,313,315,347,377,715,etc,in which race 315 was the predominant one in Bijie Prefecture The toxicity and constitution of these races were complex, even more complex than that in Xingyi Prefecture where The Identification Centre of Wheat Powdery Mildew of China is set up;
     毕节地区小麦白粉病菌生理小种至少由1、5、7、15、115、311、313、315、347、377、715等11个生理小种组成,其中315号为优势种,其生理小种的毒性及组成复杂性不亚于全国小麦白粉病鉴定中心兴义,但县与县之间差异较大。
短句来源
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  小麦白粉病
     The virulent genes of wheat powdery mildew (Erysiphe graminis f. sp. Tritici) were studied in eastern region of Heilongjiang province in 2004. The result showed that the virulent frequency of V1, V3a, V3b, V3c, V3f, V5, V5(Mli), V6, V7, V8 was high (>93.6%);
     2004年的研究结果表明,黑龙江省东部地区小麦白粉病菌群体中,V1、V3a、V3b、V3c、V3f、V5、V5(Mli)、V6、V7和V8频率较高(>93.6%);
短句来源
     According to the division into district of the Wheat Powdery Mildew in Sichuan province and the characteristic of epidemic , three mid-prediction models of occurrence degree of the disease were set up : (1) For the serious injury regions , represented by Bazhong: Y - 0.550 8 x1 - 0.166 0x2 + 0.109 8x3 + 11.356 2;
     依据四川省小麦白粉病区划和发生流行特点,运用逐步回归和双重逐步回归建立了以巴中为代表的重发区预测模型:Y=0.550 8 x1-0.166 0 x2+0.109 8x3+11.356 2;
     Screening and Study of RAPD Markers Tightly Linked to Wheat Powdery Mildew Resistance Gene Pm2
     与小麦白粉病抗性基因Pm2紧密连锁RAPD标记的筛选研究
短句来源
     The Gene Pm21——A New Source for Resistance to Wheat Powdery Mildew
     小麦白粉病新抗源——基因Pm21
短句来源
     the infection indexes of wheat powdery mildew of wheat seedlings decreased by 28.22% after 1 week of treatment with 750-fold dilution and by 42.01% by treatment with 1000-fold dilutions,respectively.
     750倍和1 000倍处理1周后,可以使小麦白粉病病情指数分别减少28.22%和42.01%。
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  powdery mildew
Endogenous Abscisic Acid in Wheat Plants upon Inoculation with the Powdery Mildew Causative Agent (Erysiphe graminisf.
      
We studied the dynamics of the abscisic acid content in above-ground parts of wheat cultivars with different resistance against powdery mildew.
      
It was assayed by the HPLC method in healthy and diseased (inoculated by the powdery mildew causative agent) plants (from inoculation to the stage of pathogen spore formation).
      
The results are discussed with special reference to the wheat resistance against the powdery mildew.
      
A cytophysiological study was carried out of the functional status of a halo as a response of the host plant to contact with a powdery mildew pathogen.
      
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Field trials of controlling both downy and powdery mildews of cucumber plants were carried out at the experimental station of the university and at a field plot in a people's commune in Peking. A number of fungicides was employed in these trials in order to compare the effectiveness of copper stearate and Bordeaux mixture with that of Dithane (made in China) against these maladies. The results pointed out that Bordeaux mixture (1:1.5:200—300) and copper stearate (1:4—6:800) were both effective against the two...

Field trials of controlling both downy and powdery mildews of cucumber plants were carried out at the experimental station of the university and at a field plot in a people's commune in Peking. A number of fungicides was employed in these trials in order to compare the effectiveness of copper stearate and Bordeaux mixture with that of Dithane (made in China) against these maladies. The results pointed out that Bordeaux mixture (1:1.5:200—300) and copper stearate (1:4—6:800) were both effective against the two mildews, however, the latter inhibited the powdery mildew better than the former. A mixture of 1% copper sulphate solution and 5% washing soap solution at a rate of 1:1 mixed without boiling was very effective for controlling the both and gave a higher yield. This mixture was easier in preparation than the copper stearate employed in routine spray. Dithane (1:800) was effective only for controlling the downy mildew, but non-effective for the powdery mildew. The addition of 0.2% colloid sulphur into the Dithane preparation rendered it cffective for controlling the powdery mildew also. Dithane (1:500) caused a little injury to the Peking varieties of cucumber, but 1:800 in concentration was safe. Addition of 0.5% resin solution into Bordeaux mixture increased the effectiveness of the later during the rainy season. According to the record of the disease indices made at various stages during the growth period, it was noted that the effect of the chemical protection became significant only when the disease indices in the non-sprayed plots raised to about 50. Below this level, the increase of yield of the sprayed plots in comparing with those of non-sprayed plots was usually insignificant. The Dithane (1:800) sprayed plots had a yield 27% higher than the non-sprayed controls. In the plots where 2 earlier sprays with copper stearate and 4 later sprays with Bordeaux mixture were made resulted a yield 38% higher than the non-sprayed plots. The net profit increased per Mou by employing 6 sprays of Dithane (1:800) was 22.3 Yuen, while that by 2 sprays of copper stearate and 4 sprays of Bordeaux mixture was 77.3 Yuen. The difference was considered to be due to the loss caused by the damage inflicted by the powdery mildew in the Dithane plots.

在焉連洼及肖家河两个试验中分别比较了热制铜皂液、波尔多液及代森锌对防治黄瓜霜霉病及白粉病所起的作用。试验中肯定了铜皂液(1∶4∶800,1∶6∶800)对霜霉病及白粉病都有一定的抑制作用,波尔多液(1∶1.5∶200—300)对霜霉病的抑制作用稍强于铜皂液,但对白粉病的抑制稍弱于铜皂液。苗期用铜皂液,后期用波尔多液可以获得很好的防治效果。在一个观察区中发现,冷制铜皂液有替代热制铜皂液的希望,因其药效及增产作用都不亚于后者。在多雨的情况下波尔多液中加入1∶200的甲松皂可以增加其药效。代森锌(1∶500,1∶800)对霜霉病有显著的保护作用,但是对白粉病不超任何防治效果。1∶500的浓度对黄瓜的生长有轻微的药害。1∶800全无药害。在1∶800的代森锌液中加入0.16分(=0.2%)的细硫粉时可以兼治霜霉及白粉病,而且获得此铜剂更高的产量,由于这一试区重复少,可以提出来作进一步的试验。代森锌中混入魚藤精作为兼治蚜虫之用时,似乎有一些微小的不良作用,但没有显著的药害。在肖家河点上的生产试验中证明,前期喷2次铜皂液,后期喷4次波尔多液的比无处理区的总产量超出38%,使用1∶800代森辞6次的比无处理区的总产量超出2...

在焉連洼及肖家河两个试验中分别比较了热制铜皂液、波尔多液及代森锌对防治黄瓜霜霉病及白粉病所起的作用。试验中肯定了铜皂液(1∶4∶800,1∶6∶800)对霜霉病及白粉病都有一定的抑制作用,波尔多液(1∶1.5∶200—300)对霜霉病的抑制作用稍强于铜皂液,但对白粉病的抑制稍弱于铜皂液。苗期用铜皂液,后期用波尔多液可以获得很好的防治效果。在一个观察区中发现,冷制铜皂液有替代热制铜皂液的希望,因其药效及增产作用都不亚于后者。在多雨的情况下波尔多液中加入1∶200的甲松皂可以增加其药效。代森锌(1∶500,1∶800)对霜霉病有显著的保护作用,但是对白粉病不超任何防治效果。1∶500的浓度对黄瓜的生长有轻微的药害。1∶800全无药害。在1∶800的代森锌液中加入0.16分(=0.2%)的细硫粉时可以兼治霜霉及白粉病,而且获得此铜剂更高的产量,由于这一试区重复少,可以提出来作进一步的试验。代森锌中混入魚藤精作为兼治蚜虫之用时,似乎有一些微小的不良作用,但没有显著的药害。在肖家河点上的生产试验中证明,前期喷2次铜皂液,后期喷4次波尔多液的比无处理区的总产量超出38%,使用1∶800代森辞6次的比无处理区的总产量超出27%。代森锌区的增产较铜一波区较小的原因在于白粉病较重。根据成本计算,铜皂液一波尔多液处理区因防治而增收的利益为每亩77.3元,而代森锌区刖为22.3元。由此可见,在黄瓜栽培采用上述两种药剂前后喷布6次结果还是有利的。从分期采收及病情指数来看,当无处理区的病情指数在50以下时,药剂的作用还不明显,病情指数在50—90时,药剂的作用便极为明显,指数升到90以上时,此时无处理区已经枯死,而药剂防治区依然可以收瓜。估计代森锌区可以延长收瓜10天,而铜一波区可以延长16天。

Mexican wheat cultivars have been introduced to our country andplanted in many regions for more than a decade.Some of them performedvery well:with good adaptability,cold tolerant,and rust resistant.|As the environmental conditions of our country differ from those ofMexico,their agronomic characteristics changed greatly.For example,with the decrease of the growing period,there was a decrease of theplant height and the weight of 1000 grains was decreased also.The weight of 1000 grains is one of important factors...

Mexican wheat cultivars have been introduced to our country andplanted in many regions for more than a decade.Some of them performedvery well:with good adaptability,cold tolerant,and rust resistant.|As the environmental conditions of our country differ from those ofMexico,their agronomic characteristics changed greatly.For example,with the decrease of the growing period,there was a decrease of theplant height and the weight of 1000 grains was decreased also.The weight of 1000 grains is one of important factors determiningyield.Therefore,The change of the weight of 1000 grains of a varietyin different,regions indicates its adoptability to ecological factors.Therelationship between the 1000 grain weight of the vareity“Tanori F-71”and the environmental conditions was thus studied.The results showeda positive correlation between the growing period from seedling to head-ing of cultivars and the 1000 grain weight in north China,r1=0.5962~(**)(n=21).In the north region of Yangtze river,there is a negative corr-elation between ∑T~* from heading to maturity and the 1000 grain weight,r2=-0.5323~(**)(n=58).In South China,decrease of the 1000 grain wei-ght is mainly resulted from the attack of wheat scab and powdery mildew.Region with an average 1000 grain weight equal to or over 80% thatof stock seed is cousidered to be adaptable region.Accordingly,regionsadaptable for growing Mexican wheat in our country are as follows:QingZang highland spring wheat region;Yun Gui highland wheat region;North China spring wheat region;and to a less extent,South China earlywinter wheat region and Xin Jiang wheat region.

本文是以墨西哥小麦品种“他诺瑞”(Tanori F-71)为例,对其在我国种植期间千粒重的变化与生态条件所作的相关和回归分析。结果证明,“他诺瑞”在我国北方春播地区种植,由于纬度高,春季气温回升快,出苗至抽穗阶段的生育天数较原产地缩短了20~42天,其千粒重与这一段的生育天数成显著的正相关,γ_1=0.5962~(**);整个长江以北地区,“他诺瑞”的千粒重还与抽穗至成熟阶段日最高温度≥30℃时,30℃以上的积温值成显著的负相关,γ_2=-0.5323~(**);南方地区引起千粒重下降的主要原因是赤霉病、白粉病的危害。以各麦区种植墨西哥小麦的平均千粒重达到原种平均千粒重的80%划为适应区,指出我国适于种植墨西哥小麦的地区有青藏高原春麦区、云贵高原麦区、北部春麦区,其次是华南早熟冬麦区和新疆麦区。

This paper deals with biology of the powdery mildew of oak trees,and the effect of this disease to the culture of oak-silkworms and alsothe control of it. The powdery mildew (Microsohaera alphitoides G. et M.) is one ofthe worst diseases on the oak tree. It causes damage of young leaves of theoak tree and therefore influences the growth of the tree and resuets in apoor feeding condition to the oak-silkworm.The cleistothecium of thefungi begin to over-winter on the oak leaves since late September...

This paper deals with biology of the powdery mildew of oak trees,and the effect of this disease to the culture of oak-silkworms and alsothe control of it. The powdery mildew (Microsohaera alphitoides G. et M.) is one ofthe worst diseases on the oak tree. It causes damage of young leaves of theoak tree and therefore influences the growth of the tree and resuets in apoor feeding condition to the oak-silkworm.The cleistothecium of thefungi begin to over-winter on the oak leaves since late September to earlyOctober and the ascospores are disseminated and cause infection of theleaves from May to June in the next year. The results of chemical control test from 1977 to 1980 show that oneto two sprays 0.05% to 0.1% Miesuging or Milcurb from late June to ea-rly July give 78.4% to 92.5% and 75.5% to 87.5% of control respectiv-ely.

柞树白粉病是柞树的主要病害,在我国的大部分有柞林的省份都有发生和危害,严重的影响柞树的生长发育和放养柞蚕。1977~1980年,我们对此病的病原菌的生物学特性和传染规律及防治方法等进行了研究。本文报道的是病原菌形态观察、传染规律及其与环境条件和树种的关系、对柞树生长和养柞蚕的影响及有效的防治方法:6月下旬~7月上旬,往柞树上喷布0.05~0.1%浓度的霉锈净或甲菌定,大面积防治效果分别达到78.4~92.5%和75.5~87.5%,对柞树和柞蚕无药害。

 
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