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nematode populations
相关语句
  线虫种群
     Nematode Populations and Soil Health Index in Wheat Fields of Tianshui Gansu in China
     甘肃天水麦田土壤线虫种群结构与土壤健康指数初探
短句来源
     Impact of Alternative Technologies to the Use of Methyl Bromide on the Tomato Root-knot Nematodes (Meloidogyne spp.) and Soil Free-living Nematode Populations Dynamic
     甲基溴替代技术对番茄根结线虫和土壤自由生活线虫种群动态的影响
短句来源
     Twenty eight root-knot nematode populations on Psidium guajava were collected from Hainan Province. Based on morphology,isozyme and mtDNA,25 populations were identified as Meloidogyne zhanjiangensis,2 populations as M.panyuensis and 1 population as M.incognita.
     运用形态学方法,结合同工酶电泳和线粒体DNA标记技术,对采自海南省10市县的28个番石榴根结线虫种群进行鉴定,明确了25个种群为湛江根结线虫M eloidogyne zhanjiangensis、2个种群为番禺根结线虫M. panyuensis、1个种群为南方根结线虫M.
短句来源
     The nematode populations of wheat fields in Xiaoquan village,Qingshui county,Tianshui city,Gansu province of China were investigated preliminarily. The relationship of nematode populations and their quantities was presented. The recorded nematodes were divided into five trophic groups:Phytophage nematode,Bacterivorous nematode,Insect nematode,Fungivorous nematode and Omnivore/Predator nematode.
     首次对甘肃天水清水县小泉乡麦田土壤线虫种群进行了探索性调查分析,获得了麦田线虫种群构成关系的初步数据,并根据营养类群将线虫划分为:植物寄生线虫(Phytophage nematode)、食细菌线虫(Bacte-rivorous nematode)、昆虫线虫(Insect nematode)、食真菌线虫(Fungivorous nematode)、杂食/捕食线虫(Om-nivore/Predator nematode)5大类群。
短句来源
  线虫群体
     Morphological and Molecular Identification of Root-knot Nematode Populations Occurring in Zhejiang, China
     浙江省根结线虫群体的形态学与分子鉴定
     The test is fast and sensitive, it can be routinely used for direct diagnosis of a single nematode and for detection of M.hapla in mixed soil nematode populations.
     本方法具有快速、灵敏的特点,可日常用于北方根结线虫单条线虫的直接鉴定以及混合土壤线虫群体中北方根结线虫的检测。
短句来源
     The test is fast and sensitive,it can be used for direct diagnosis of a single nematode and for detection of M.enterolobii in mixed soil nematode populations.
     本方法具有快速灵敏的特点,可用于象耳豆根结线虫单条线虫的直接鉴定以及混合土壤线虫群体中象耳豆根结线虫的检测。
短句来源
     The, reliability of the diagnostic test has been validated by screening different geographic populations of five closely related Meloidogyne species and natural mixed soil nematode populations.
     通过对5种常见根结线虫的不同地理群体及自然土壤线虫群体的测试,验证了PCR引物针对北方根结线虫的特异性和可靠性。
短句来源
     The test is fast and sensitive, it can be routinely used for direct diagnosis of a single nematode and for detection of M. enterolobii in mixed soil nematode populations.
     本方法具有快速、灵敏的特点,可日常用于象耳豆根结线虫单条线虫的直接鉴定以及混合土壤线虫群体中象耳豆根结线虫的检测。
短句来源
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  “nematode populations”译为未确定词的双语例句
     The density of fungivorous and plant parasitic nematode populations in Grafted tomato plots were 3.9 and 128.9 individual/1 00ml soil , which were 8.0 and 183.4 individual/1 00ml soil in maofen plots.
     嫁接毛粉番茄根围土壤中食真菌线虫密度为3.9条/100ml土,食植物线虫密度为128.9条/100ml土,低于毛粉番茄8.0条/100ml土和183.41条/100ml土。
短句来源
     Three strains (B7,5a-4 and Y3-1) significantly reduced the nematode populations in the rhizosphere and enhanced the growth of mungbean plants over the controls in the presence or absence of Rhizoctonia solani SX-6, however, the application of bacterial mixtures did not show greater effect for disease control and plant promotion than that of single strain.
     3株细菌(B7,5a-4和Y3-1)显示了最好的病害控制和植物促生,但它们的混合使用与单一使用相比没有显著的提高控制效果。
短句来源
     There are sixgen-era of plant nematodes on longan, the nematode populations consist of 2~4genera,thedominant nematode is Trichodorus.
     龙眼上植物线虫有6属,其群体由2~4个属组成,优势线虫属Trichodorus;
短句来源
     2. rDNA-ITS sequence analysis of all samples: the amplification of the rDNA-ITS region from three stem nematode populations of Beijing city, Daxing of Beijing city,Funing of Hebei province(code Des-5、Des-6、Des-7) in China and D.
     3.供试样品的rDNA-ITS序列分析:用通用引物对rDNA1/rDNA2扩增供试群体rDNA-ITS区域,产生了序列长度不等的片段。
短句来源
     diapci from Netherlands yielded one single fragment of 942bp ,whereas the PCR products of ITS from three stem nematode populations of Zhangbei of Hebei province, Jiangsu province (Code Des-1、Des-3、Des-4) in China and from stem nematode group of Korea was 1130bp.
     河北张北的马铃薯群体、韩国的大蒜群体和江苏的甘薯群体扩增片断长度均为1130bp。 而北京、北京大兴、河北抚宁的甘薯群体的扩增片段长度为942bp,与以上群体相比,在ITS区具有一个188bp的缺失片段。
短句来源
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  nematode populations
A poor expressed dependence between the density of nematode populations and salinity was revealed.
      
The nematode populations differed in their ability to reproduce on tomatoes with the Mi gene, conferring resistance to rootknot nematodes.
      
Significant negative correlation between nematode populations and storage temperature and positive correlation between nematode populations and soil moisture were observed.
      
thornei under controlled conditions: after two months the nematode populations were less than half that in cv.
      
Mi-resistant tomato and pepper appear to have considerable utility in the integrated management of RKN in Crete, provided care is taken to monitor the species and virulence or reproductive ability of the nematode populations.
      
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Species in 13 genera of plant parasitic nematodes were found in 85 samples collected from cotton fields in 8 counties of Shanghai. Rotylenchulus remiformis and Pratylenchus spp. were the major root-sedentary and endoparasitic nematodes in the samples. Tylenchorhynchus spp. and Helicotyienchus spp. were the dominant exoparasitic species in soil samples.The two peaks of nematode population in the fields were recorded at the beginning of june and middle of September, respectively. The numbers of Tylenchida,Aphelenchida,...

Species in 13 genera of plant parasitic nematodes were found in 85 samples collected from cotton fields in 8 counties of Shanghai. Rotylenchulus remiformis and Pratylenchus spp. were the major root-sedentary and endoparasitic nematodes in the samples. Tylenchorhynchus spp. and Helicotyienchus spp. were the dominant exoparasitic species in soil samples.The two peaks of nematode population in the fields were recorded at the beginning of june and middle of September, respectively. The numbers of Tylenchida,Aphelenchida, Dorylaimida and Rhabditida were making up 29.2-46.0%, 9.3-19.4%, 4.0-15.1% and 23.7-49.3% of the nematode population in the soil, respectively.

1984—1985年,从上海市郊8个县85块棉田调查样品中检得植物寄生线虫13个属(种)。普通肾形线虫(Rotylenchulus reniformis)和根腐线虫(Pratylenchus spp.)是根部固着寄生和内寄生线虫的主要种。矮化线虫(Tylenchorhynchus spp.)和螺旋线虫(Helicotylenchus spp.)是土壤中外寄生线虫优势种群。6月初和9月中旬田间线虫群体密度分别出现一个高峰。垫刃目(Tylenchida)、滑刃目(Aphelenchida)、矛线目(Dorylaimida)和杆形目(Rhabditido)的数量分別在土壤线虫群体中占29.2—46.0%、9.3—19.4%、4.0—15.1%和23.7—49.3%.

About 42.5% of the samples of roots and soil collected from 150 fields-of 27 vegetable crops in Shanghai suburbs was infected with Rotylenchulus reniformis.The major host plants include cucumber,cowpea,chinese cabbage,kidney bean and tomato.The growth of seedlings of cucumber,cowpea,tomato and egg plant were reduced significantly in the soil inoculated with 300 nematodes per 100 cm~2 soil tested in greenhouse.Peaks of nematode population in the fields occurred from the beginning of july to the end of August.The...

About 42.5% of the samples of roots and soil collected from 150 fields-of 27 vegetable crops in Shanghai suburbs was infected with Rotylenchulus reniformis.The major host plants include cucumber,cowpea,chinese cabbage,kidney bean and tomato.The growth of seedlings of cucumber,cowpea,tomato and egg plant were reduced significantly in the soil inoculated with 300 nematodes per 100 cm~2 soil tested in greenhouse.Peaks of nematode population in the fields occurred from the beginning of july to the end of August.The number of nematodes in 0—10 cm soil made up two third of the nematode population in 0—35 cm soil.It took about 25—28 days to complete life cycle for one generation at 25—30℃.Soil treatment with Dazomet 6—8g a.i./m~2 before sowing and with Furadan 3G 2.25 Kg a.i./ha. in transplanting have proved to be effective measure for control of this nematode.

调查了上海近郊27种蔬菜150个田块,普通肾形线虫(Rotylenchulus reniformis)发生频率为45%,主要寄主包括黄瓜、豇豆、菜豆、青菜和番茄等。温室接种试验线虫300头/100ml 土壤,50天后黄瓜、豇豆、番茄和茄子苗的生长量均显著降低。病田土壤线虫量在七月上旬到八月下旬间出现高峰。0—10cm 上层线虫量占0—35cm 土层线量的三分之二。25—30℃约25—28天可完成一个世代。苗前应用棉隆6—8克/m~2处理土壤以及移植时应用呋喃丹颗粒剂2.25公斤(有效成分)/公顷对该线虫均有较好防治效果。

During the investigation in 1985—1986,we found that the major com-ponents of the nematode population in the cotton fields of Shaanxi provinceare Helicotylenchus califormicus,Tylenchorhynchus acti,Rhebditida spp.,Ditylenchus triformis,Aphelenchus avene and Tylenchus spp.et al. In field plot and greenhouse experiments from 1985 to 1987.It was demons-trated that the Fusarium wilt of cotton was more severe in the presence ofH.califormicus with Fusarium oxys porum f.vasinfectum together than with F.oxysporum...

During the investigation in 1985—1986,we found that the major com-ponents of the nematode population in the cotton fields of Shaanxi provinceare Helicotylenchus califormicus,Tylenchorhynchus acti,Rhebditida spp.,Ditylenchus triformis,Aphelenchus avene and Tylenchus spp.et al. In field plot and greenhouse experiments from 1985 to 1987.It was demons-trated that the Fusarium wilt of cotton was more severe in the presence ofH.califormicus with Fusarium oxys porum f.vasinfectum together than with F.oxysporum alone.Rhabditida and other nematodes with F.oxysporum f.vasin-fectutn have no synergistic effects. Our study strongly indicates that nematicides can not restrain F.oxyspo-rum f.vasinfectum but that they can reduce the incidence of Fusarium wiltas a result of population reduction of H.califormicus by the action of nema-ticides.

通过田间调查发现我省棉田的主要线虫类群有:植物外寄生线虫;小杆目线虫;具有吻针非植物寄生线虫等3种大类群。1985—1987年田间及温室盆栽试验,证明外寄生加洲螺旋线虫(Helicotylenchuscaliformicus)可加重棉花枯萎病菌(Fusarium oxyspotium f.vasinfectum)对棉花的为害程度;小杆目线虫和具有吻针的非植物寄生线虫同棉花枯萎病菌无复合侵染作用。田间防治试验表明,杀线剂通过降低田间寄生线虫的数量,减轻棉花枯萎病的为害,而对棉花枯萎病菌无抑制作用。

 
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