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cowpea
相关语句
  豇豆
    Influence of Leafmould Disease on the Organic Matter Contents of Cowpea Leaves
    叶霉病对豇豆叶片有机物含量的影响
短句来源
    Studies on Conditions for Sporulation and Inoculation of Uredospores of Cowpea Rust Pathogen
    豇豆锈菌夏孢子接种条件的研究
短句来源
    Transforming Brassica juncea Coss with Cowpea Trypsin Inhibitor Gene and Its Insect-resistance Identification
    豇豆胰蛋白酶抑制剂基因转化芥菜及抗虫鉴定
短句来源
    Studies on activity of PPO,PAL and POD isoenzymes of cowpea seedling leaves damaged by carmine spider mite
    朱砂叶螨危害初期豇豆幼苗叶片PPO、PAL及POD的研究
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    The Effect on Physical Control of Cowpea Pest
    物理防治在控制豇豆虫害中的作用
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  “cowpea”译为未确定词的双语例句
    In cowpea sap, the thermal inactivation point was between 55-60℃, the dilution end point was between 10~(-2)-10~(-3) and infectivity was retained for 1-2 days, It was transmissible by cowpea seeds in high level (6.9%—16.7%) and by Myzus persicae.
    其稀释限点10~(-2)-10~(-3),致死温度55—60℃,体外存活期1—2天。 种子传毒率为6.9—16.7%。
短句来源
    On basis of pathogenicity to peanut, pea,cowpea and bean two groups of PSV strains could be distinguished. One group including PSV-1 , PSV-13, PSV-P and PSV-E was hig'h virulent to those host plants, and another group including PSV-Mi, PSV-R and PSV-F was less virulent.
    依据对花生、豌豆、蚕豆等寄主植物致病力,将PSV—1、PSV—13 PSV—P和PSV-E划分为强毒力株系,PSV—Mi、PSV—R和PSV—F为弱毒力株系。
短句来源
    , and BS_2 also colonized in rice, wheat, and cowpea.
    另外BS_2菌株可在辣椒和白菜体内较长期定殖。
短句来源
    Studies on the Interaction of Maruca Testulalis, Cowpea Plant and Insecticide, and Its Mechanism
    豆野螟及其寄主作物与杀虫剂三者相互作用的研究
短句来源
    A STUDY ON THE IDENTIFICATION OF NYMPHAL INSTARS OF COWPEA APHID
    豆蚜孤雌胎生蚜虫龄鉴别方法的探讨
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  cowpea
Melon, cowpea and soya as sole protein sources or as a mixture were fed to 60 albino rats.
      
Protein Extraction From Cowpea Tissues for 2-D Gel Electrophoresis and MS Analysis
      
A method of extraction of proteins from cowpea for two-dimensional electrophoresis is presented.
      
The efficiency of this method was demonstrated by comparison of the patterns of protein deposition in developing and mature cowpea seeds.
      
These two gramineous species were better hosts than the legumes Vigna unguiculata (cowpea) and Arachis hypogaea (peanut).
      
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Isolations and routine diagnosis of the causal virus of a mosaic disease of adzuki-bean,which was usually very common and severe in Peking,were made during 1962 and 1963.Thesymptoms produced on the adzuki-bean plants after being inoculated with the virus isolatewere the same as those observed in fields,namely chlorotic blotches or mild mottling of the firstleaves and mosaics,slight puckering,rolling,convex cupping and marginal identation of thelater developed leaves.The infected plants usually became stunted...

Isolations and routine diagnosis of the causal virus of a mosaic disease of adzuki-bean,which was usually very common and severe in Peking,were made during 1962 and 1963.Thesymptoms produced on the adzuki-bean plants after being inoculated with the virus isolatewere the same as those observed in fields,namely chlorotic blotches or mild mottling of the firstleaves and mosaics,slight puckering,rolling,convex cupping and marginal identation of thelater developed leaves.The infected plants usually became stunted and developed numerous budsin rosttes at each node.This virus isolate was demonstrated to live in vitro (ca.20℃ to 22℃) for 24 hours,toressist a thermal inactivation up to 60-65℃ for ten minutes and to endure a dilution up to1:3,000 to 1:4,000.Transmission of this virus through adzuki-bean and cowpea seeds was demonstrated andthe percentages of transmission were 1.6% and 17.2% respectively.Myzus persicae Sulz.,Rhopalosiphum pseudobrassicae Davis,Aphis gossypii Glover andMacrosiphum pisi Kalt.were able to transmit the virus in greenhouse tests and their efficienciesof transmission followed the order mentioned above.Some species of leguminosae,including Vigna sinensis (1.) Endl.,V.cylindrica (L.)Skeels.Phaseolus vulgaris L.var.,Pisum sativum L.,Dolichos lablab,L.,Vicia fabaL.,Glycine soja Sieb.et Zucc.were readily infected and did not show any necroticensiformis Dc.was very difficult,if not impossible,to infect and did not show any necroticspots.Other legumes tested,including Phaseolus mungo L.,Cassia mimosoides L.,Lupinusperennis L.,Lathyrus palustris L.,Astragalus sinicus L.,Trifolium repens L.and T.hybridumL.were found to be immune.Some members of Solanaceae,Cucurbitaceae,Amaranthaceae,Compositae,Cruciferae,Umbelliferae and Chenopodiaceae were inoculated,however,none ofthem was infected except Spinacea oleracea Mill.,Matthiola sp.and Cheiranthus cherii.Onleaves of the last named plant minute chlorotic spots were produced,but not very consistent.The writers were of the opinion that the so-called cowpea mosaic viruses so far reportedmight be assembled into two main groups:one with short longevity in vitro of usually notexceeding 72 hours and the other with rather long longevity of 15 to 20 days.To the formerbelonged the virus isolates of Mclean (1941),Yu (1946),Snyder (1942) and Hino (1960),whileto the latter belonged the isolates of Dale (1949),Capoor & Varma (1956),Semangoen (1958),Chant (1962) and Robert & Robert (1962).The former group was considered to be AsparagusBean Mosaic Virus (AbMV) and the latter retained the name Cowpea Mosaic virus (CpMV).The present isolate evidently agreed mainly with the AbMV although having some minordiscrepancies and therefore it was considered to be a distinct strain of the Asparagus BeanMosaic Virus.

赤豆花叶病在北京相当严重,病株达10—40%。病株分离物用常规汁液摩接法接于赤豆幼苗,初生透明褪绿小点或轻微斑驳,后表现花叶及疱斑,重者叶扭折畸形,叶缘缺刻,株矮,(?)小而少。同一病毒接种于豇豆(Vigna sinensis L.)上,与赤豆上的症状无明显的差别。这个病毒的物理属性为:致死温度60—65℃10分钟,稀释限点1∶3000—1∶4000,体外存活仅24小时。病株所结种子有传毒能力,视寄主不同而有所差异,赤豆种子发病率仅1.6%,而豇豆种子发病率为17.2%。桃蚜、豆蚜、棉蚜及菜缢管蚜皆能传播此病毒。寄主范围为多种豆科作物,如豇豆、藊豆、大豆、蚕豆及芸豆、豌豆,黎科的菠菜,十字花科的桂竹香、紫罗栏等。除在桂竹香上生褪绿小点外,余均表现系统花叶症。但不侵染紫云英、绿豆、山扁豆、三叶草、苜蓿、黄瓜、南瓜、烟草、藜、千日红、苋及芹菜等。据此,作者等认为它不是黄瓜花叶病毒的株系,亦不同于日野的赤豆花叶病毒(豇豆花叶病毒的一个株系),与典型的长豇豆花叶病毒有较多的共同点,因此认为是长豇豆花叶病毒(AbMV)种羣中的一个新株系。

The pea yellow-top is the major virus disease of peas grown in the winter season from November to January in Guangzhou district, causing some damage from time to time in some localities. The major symptoms of the disease consisted of shoot yellowing, stunting and sterility, and the leaves of the yellow shoots becoming small in size with or with out slight crinkling.The disease and its causal virus were studied in 1960-1964 and again in 1981. It was found that the virus particles were in the shape of flexous...

The pea yellow-top is the major virus disease of peas grown in the winter season from November to January in Guangzhou district, causing some damage from time to time in some localities. The major symptoms of the disease consisted of shoot yellowing, stunting and sterility, and the leaves of the yellow shoots becoming small in size with or with out slight crinkling.The disease and its causal virus were studied in 1960-1964 and again in 1981. It was found that the virus particles were in the shape of flexous rods,measuring 12×416-466nm.The virus could not be transmitted by mechanical inoculation method nor by soil inoculation method. Aphis lavurni Kaltanbach was found to be the vector while Myzus pericae Sulty was not. A. Isburni transmitted the virus in a persistent (circu-lative ) manner. The shortest aquiring period was 3 hours. The incubation period in the vector was 7-24 hours. The infective aphid was shown to be able to transmit the virus all through its life until its death. The host range of the virus was found to be limited to peas and broad beans, a variety of bean and a variety of Astragalus sinicus.The following plant species were found to be immume to the disease: alfalfa, clover, common vetch, soybean, peanut, mung bean, hyacinth dolichos, Adsuki bean, Azuki bean, and catjang cowpea.Based on the above preliminary results it is suggested that the pea yellow-top occurring in Guangzhou district is a newly recorded virus disease which is different from all the pea and broad bean virus diseases reported elsewhere in the world.

1960—1964年我们对广州地区豌豆黄顶病的病原进行了初步鉴定。该病毒不能由汁液摩擦和土壤传递,传病介体为豆蚜(Aphis laburni Kaltanbach),一个豆蚜的传病率可高达66—68%;2—10个的相差不多,都高达80—100%。最短获毒饲育时间为3小时,病毒在虫体内潜育期最少7小时,最短传毒饲育时间少于15分钟,保毒虫能终生传病。可以认为该病毒是一种持久性病毒。1981年我们进行了病毒的电镜观察,病毒粒子线状,大小为12×416-496nm。 此病毒除侵染豌豆外,还可侵染蚕豆、菜豆和紫云英,不能侵染苜蓿、三叶草、豇豆、红豆、眉豆、大豆、花生、赤小豆、绿豆、扁豆、苕子等。在豌豆上,病害潜育期5—20天。 根据文献上的有关报道,我们认为本病毒是一种新报道的病毒,暂命名为豌豆黄顶病毒。至于此病毒在病毒分类上的归属问题,则还有待于进一步研究解决。

We got an cowpea isolate from the cowpea crops naturally severely diseased in large area in Beijing suburb.Infected plants exhibit systemic mosaic and brownish necrosis together with some malformation anddistortion of the youngest leaves.The host range of this isolate is qui-te wide.It infected more than 10 species in 5 families out of 19 speci-es in 6 families tested.Chenopodium amaranticolor,C.quinoa,Gomphrenaglobosa,Datura stramonium,Viola faba,and Vigna sinensis are rather sus-ceptible while...

We got an cowpea isolate from the cowpea crops naturally severely diseased in large area in Beijing suburb.Infected plants exhibit systemic mosaic and brownish necrosis together with some malformation anddistortion of the youngest leaves.The host range of this isolate is qui-te wide.It infected more than 10 species in 5 families out of 19 speci-es in 6 families tested.Chenopodium amaranticolor,C.quinoa,Gomphrenaglobosa,Datura stramonium,Viola faba,and Vigna sinensis are rather sus-ceptible while Brassica chinensis,B.rapa,B.oleracea,Cucumber,Fren-ch bean,Nicotiana tabacum,N.glutinosa are lack of visible symptoms.Although the symptoms of the cowpea isolate on broad bean is very si-milar to the Stubbs' type Strain of broad bean wilt virus,it seemslikely to be a different strain in view of the fact that it can not affectthe N.tabacum and N.glutinosa,both of which are very susceptible tothe type strain.The dilution end point:10~(-8)~10~(-4) the thermal inactivation point(10 min):50~55℃ and infectivity retained at room temperature for more than 4 days.It is transmissible by Myzus persicae or Aphids fabae.Purified preparations contain three sorts of particles with 50 s(top),67 s(middle),and 118 s(bottom)respectively.Particles are isometricabout 25nm in diameter,hexagonal in shape and mostly aggregatedespecially in the presence of salt.The electron microscopy of the ultrathin section of the chlorotie le-sions on C.quinoa shows the BBWV 's characteristic tubules whose cr-oss section are consisting of 7~9 virions, the large crystalline inclu-sion near the nucleus and mitochondria forming of something other thanthe virus particles,and also the crystalline aggregates packed by viri-ons.All the information mentioned above suggests that the cowpea iso-late under study is related to BBWV,different from the 4 known str-ains of BBWV and most probable a separated cowpea strain.

1981年夏,在京郊大面积受害的豇豆上分离到一株毒原一豇豆分离物。其症状是顶叶系统花叶,褐色坏死和畸形。生物学测定证明其寄主范围广泛,在所测试的6个科19种植物中,能侵染5个科的十余种植物。苋色藜、奎宁藜、千日红、曼陀罗、蚕豆、豇豆为其易感寄主。但不能侵染白菜、油菜、芜菁、黄瓜、菜豆、豌豆、普通烟和心叶烟等植物。该分离物虽在蚕豆上病状与蚕豆萎蔫病毒Stubbs 典型株相似,但从其不侵染普通烟和心叶烟似乎又不完全相同。稀释限点:10~(-3)10~(-4);热灭活点50~55℃;体外保毒期(室温)4天以上。桃蚜或豆蚜传。提纯病毒颗粒呈直径25mm,六角形,其三种组分之沉降常数分别为50S(T),67S(M)和118S(B)。提纯的病毒制品其颗粒极易聚集特别是盐类存在时。电镜观察奎宁藜局部退绿斑的超薄切片发现为蚕豆萎蔫病毒所具有的特征性的横截面由7~9个病毒颗粒所组成的管状结晶物以及由非病毒颗粒所组成的大型晶体内含体。根据上述寄主范围、病状、病毒颗粒形态和组分以及内含体的特征,豇豆分离物是蚕豆萎蔫病毒,很可能是与已知的四种毒株不同的豇豆株。

 
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