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  • 1
    Electronic Resource
    Electronic Resource
    Springer
    European journal of plant pathology 68 (1962), S. 368-390 
    ISSN: 1573-8469
    Source: Springer Online Journal Archives 1860-2000
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
    Type of Medium: Electronic Resource
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  • 2
    Electronic Resource
    Electronic Resource
    Springer
    European journal of plant pathology 81 (1975), S. 205-216 
    ISSN: 1573-8469
    Source: Springer Online Journal Archives 1860-2000
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
    Notes: Abstract Plants of four species obtained from various sources were raised and compared for their suitability as test plants for a number of viruses. The species comprisedChenopodium amaranticolor (local lesion host of red clover mottle virus),Nicotiana glutinosa (local lesion host of tobacco mosaic virus (TMV)),N. rustica (systemic host of TMV, cucumber mosaic virus and tomato spotted wilt virus) andN. tabacum ‘White Burley’ (systemic host of TMV). Some sources proved to be more attractive as test plants or experimental hosts because of, e.g., production of more local lesions per unit of leaf area (C. amaranticolor andN. glutinosa), distinctness of lesions (C. amaranticolor), development of more pronounced systemic symptoms (N. rustica andN. tabacum ‘White Burley’), better growth characteristics (particularlyC. amaranticolor andN. rustica), smoother leaves being easier to rub (N. glutinosa) or more and bigger leaf formation (particularlyN. rustica). The implications for the interpretation of host range studies and the quest for propagation and assays hosts are discussed.
    Type of Medium: Electronic Resource
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  • 3
    Electronic Resource
    Electronic Resource
    Springer
    European journal of plant pathology 53 (1947), S. 133-139 
    ISSN: 1573-8469
    Source: Springer Online Journal Archives 1860-2000
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
    Notes: Summary Some methods of virus purification are discussed. A distinction has been made between the purification, which can be obtained in a rather simple way (e.g. of the viruses of tobacco mosaic, tomato bushy stunt and turnip yellow mosaic) and that, which require a more complicated manipulation (e.g. of the potato virus X). Information is given about the concentration through salting out with ammonium sulphate of the virus causing the „ratelziekte” of tobacco. Previously the normal cell constituents had been mostly removed by heating the expressed sap of diseased tobaccoplants during 10 minutes at 60°C and then centrifuging off the coagulum. The partly purified virus (a brown, amorphous product has been obtained) could be preserved at 12°C during at least 3 months without losing infective power.
    Type of Medium: Electronic Resource
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  • 4
    Electronic Resource
    Electronic Resource
    Springer
    European journal of plant pathology 54 (1948), S. 113-133 
    ISSN: 1573-8469
    Source: Springer Online Journal Archives 1860-2000
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
    Notes: Samenvatting Inoculatieproeven brachten niet alleen de identiteit van het ratel- en stengel-bontvirus aan het licht, maar tevens het bestaan van onderscheidene stammen van dit virus. Veld- en potproeven bevestigden de identiteit. Verder bleek hierbij dat aard-appelen, verbouwd op besmette grond, welke gedurende het groeiseizoen geen enkele afwijking te zien gaven, in de nateelt een meer of minder hoog percentage stengelbontzieke planten kunnen opleveren. Bovendien bleek, dat het virus niet alleen in de oppervlakkige laag van de bouwvoor voorkomt, doch ook dieper.
    Type of Medium: Electronic Resource
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  • 5
    Electronic Resource
    Electronic Resource
    Springer
    European journal of plant pathology 54 (1948), S. 142-146 
    ISSN: 1573-8469
    Source: Springer Online Journal Archives 1860-2000
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
    Notes: Summary Tobacco black root rot, caused byThielaviopsis basicola (Berk. etBr.) Ferraris has been reported for the first time in the Netherlands. It occurred in tobacco seed beds in the Maas and Waal district, especially in the variety Kentucky Italiana. A part of the literature on this subject is briefly discussed and methods for control are given.
    Type of Medium: Electronic Resource
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  • 6
    Electronic Resource
    Electronic Resource
    Springer
    European journal of plant pathology 76 (1970), S. 174-178 
    ISSN: 1573-8469
    Source: Springer Online Journal Archives 1860-2000
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
    Description / Table of Contents: Samenvatting Voor kleuring van de 8 of 12 μ dikke microtoomcoupes van stengels en bladeren werden meestal methylgroen-pyronine en toluïdineblauw gebruikt; enkele bladcoupes werden ook met Heidenhain's hematoxyline gekleurd. Dwarsdoorsneden van jonge, gezonde sandelbladeren (Fig. 1A) en jonge, zieke bladeren (Fig. 1B) werden met elkaar vergeleken. Opmerkelijk was, dat in het laatste geval de differentiatie tussen palissade-en sponsparenchym was verdwenen. Verder was de regelmatige opbouw van de vaatbundels enigszins verstoord. Vaak werden in floëem en cambiale lagen necrotische cellen waargenomen. Bij vergelijking tussen gezonde stengels (Fig. 2A) en zieke (Fig. 2B) bleek in de zieke stengels de organisatie van floëem, mergstralen en soms ook de cambiale lagen verstoord te zijn. Voorts waren in deze weefsels groepjes necrotische cellen zichtbaar. Lengtedoorsneden van zieke stengels, die gekleurd waren met methylgroen-pyronine, vertoonden sterk gekleurde gedeelten in de zeefvaten, vooral in de buurt van de zeefplaten. Bij een vergroting van 1500 x werden zowel bij gezonde als zieke stengels in deze gebieden korrelige structuren gevonden. het enige verschil was, dat bij de zieke een gedeelte van deze sterk gekleurde gebieden een blauwe kleur vertoonde en voor de rest rood was, terwijl bij het gezonde materiaal alleen de rode kleur aanwezig was. Dit zou kunnen wijzen op een ophoping van DNA in het floëem van zieke stengels.
    Notes: Abstract Sections of young leaves with typical “spike” symptoms did not show any differentiation into palisade and spongy parenchyma tissue. Moreover, the regular structure of the vascular bundles was sometimes slightly disturbed and often necrotic cells occurred both in the phloem and in the cambial zone. Cross sections of diseased stems showed that the organisation of the phloem, medullary rays and sometimes also of the cambial layers was disturbed. Besides, numerous groups of necrotic cells could be observed in the phloem and, less frequently, in the cambial layers. Longitudinal sections of diseased stems stained with methyl green-pyronin showed an accumulation of blue material. As even at a magnification of x 1500 no differentiation of the blue material could be obtained, the latter might consist of accumulated DNA fromMycoplasma-like organisms having lost their original structure, as a result of the fixation and embedding techniques used.
    Type of Medium: Electronic Resource
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  • 7
    ISSN: 1432-2242
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Type of Medium: Electronic Resource
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  • 8
    Electronic Resource
    Electronic Resource
    Springer
    Antonie van Leeuwenhoek 17 (1951), S. 285-296 
    ISSN: 1572-9699
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Type of Medium: Electronic Resource
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  • 9
    Electronic Resource
    Electronic Resource
    Springer
    European journal of plant pathology 64 (1958), S. 419-421 
    ISSN: 1573-8469
    Source: Springer Online Journal Archives 1860-2000
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
    Description / Table of Contents: Summary Since virus diseases are of great importance in the cultivation of leguminous crops, extensive, systematic studies are carried out on them at the Institute of Phytopathological Research, Wageningen. The aims are to identify and record the viruses involved. A list of legume viruses already isolated in the Netherlands is given. Stress is laid on the need for international cooperation in the study of virus diseases of crops, and of legumes in particular. The article is an introductory one of a series of publications dealing with the various viruses found in the Netherlands and the diseases caused by them.
    Notes: Samenvatting Vanwege de betekenis van de virusziekten voor de cultuur van vlinderbloemige gewassen is op het Instituut voor Plantenziektenkundig Onderzoek een uitgebreid, systematisch onderzoek aan de gang met als doel de inventarisatie en identificatie van bij deze gewassen in Nederland voorkomende virussen. De reeds geisoleerde virussen worden opgesomd. De literatuurlijst geeft een overzicht van datgene wat tot dusver in Nederland over dit onderwerp is gepubliceerd. Het artikel vormt een inleiding tot een reeks publikaties, die betrekking zullen hebben op de verschillende virussen en de ziekten, die er door worden teweeggebracht.
    Type of Medium: Electronic Resource
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  • 10
    Electronic Resource
    Electronic Resource
    Springer
    European journal of plant pathology 65 (1959), S. 13-23 
    ISSN: 1573-8469
    Source: Springer Online Journal Archives 1860-2000
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
    Type of Medium: Electronic Resource
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