摘要:

AbstractStudies are described in which the pattern of fungal colonisation was examined in the wood at the base of spruce stems which had been damaged at different times over the previous six years during normal log‐extraction operations. The mycoflora of the wood and bark of undamaged stems in similar crop conditions was also examine

ISSN:0300-1237    

DOI:10.1111/j.1439-0329.1974.tb00428.x

出版商:Blackwell Publishing Ltd    

年代:1974

数据来源: WILEY

摘要:

AbstractThe spread of Fomes annosus from artificial infections of stems, in relation to the chemical characteristics of timber of two spruce clones. Differences in the spread ofFomes annosusin two spruce clones (Picea abiesKarst.), which were found by DIMITRI, may be attributed to differences in the properties of the wood from the two clones, detected in laboratory tests. Wood meal from the more resistant clone R inhibitedFomes annosusin bioassays more than wood meal from the more susceptible clone A. Wood from clne A‐trees showed a higher nitrogen content than wood from clone R‐tr

ISSN:0300-1237    

DOI:10.1111/j.1439-0329.1974.tb00429.x

出版商:Blackwell Publishing Ltd    

年代:1974

数据来源: WILEY

摘要:

AbstractThe Occurrence ofMelampsora pinitorqua(Braun) Rostr. in Central and Eastern Europe, its biology and methods of control are described on the basis of a literature review. The incidence of the disease in young Scots pine plantations is dependent on the presence of the alternate host,Populus tremula, in the region. A comparison of the incidence with climatic conditions during several years in Poland, using “Walter Climate‐diagrams” demonstrated that spring drought reduces the di

ISSN:0300-1237    

DOI:10.1111/j.1439-0329.1974.tb00430.x

出版商:Blackwell Publishing Ltd    

年代:1974

数据来源: WILEY

摘要:

AbstractAscospore and pycnospore discharge and germination were examined. The causal fungus was psychrophilic, with an optimum growing temperature of 10 °C. Pathogenicity toAbies sachalinensiswas ascertained by artificial inoculation, and symptoms were induced also by spraying a pyenospore suspension on to untreated shoots

ISSN:0300-1237    

DOI:10.1111/j.1439-0329.1974.tb00431.x

出版商:Blackwell Publishing Ltd    

年代:1974

数据来源: WILEY

摘要:

AbstractAnatomical studies on the infection biology of Scleroderris lagerberii (Brunchorstia pinea). Infection ofPinus nigrashoots byB. pineawas studied by means of both ordinary light and fluorescent microscopy. Following spore germination, the mycelium lives under and between the leaf scales, subsequently invading the leaf scales directly. The hyphae can grow through periderms, later invading the xylem via the rays.

ISSN:0300-1237    

DOI:10.1111/j.1439-0329.1974.tb00432.x

出版商:Blackwell Publishing Ltd    

年代:1974

数据来源: WILEY

摘要:

AbstractFive series of inoculation experiments proving the role of bud scale scars, stipule scars and leaf scars in infection of poplar byAplanobacter populiare described. In addition details are given on the development of the buds and development of the shoots in the clones “Brabantica” and “Candi

ISSN:0300-1237    

DOI:10.1111/j.1439-0329.1974.tb00433.x

出版商:Blackwell Publishing Ltd    

年代:1974

数据来源: WILEY

摘要:

AbstractA method for examining Norway spruce (Picea abies Karst.) for susceptibility and resistance to the spread of Fomes annosus (Fr.) Cooke. An easily applied method is described for determining the results of infections and the reactions of young Norway spruce toFomes annosus. By the use of genetically homogeneous material, e. g. clonal plants, the importance of environmental factors such as nutrient supply and also the varying virulence of different fungal strains can be studied.

ISSN:0300-1237    

DOI:10.1111/j.1439-0329.1974.tb00434.x

出版商:Blackwell Publishing Ltd    

年代:1974

数据来源: WILEY

ISSN:0300-1237    

DOI:10.1111/j.1439-0329.1974.tb00435.x

出版商:Blackwell Publishing Ltd    

年代:1974

数据来源: WILEY

摘要:

Book reviwed in this article:38. Deutsche Pflanzenschutz‐Tagung der Biologischen Bundesanstalt fur Land‐ und Forstwirtschaft in Berlin, 11. ‐ 15. Oktober 1971Schuster, G.:Virus und ViruskrankheiteinLevitt, J.:Response of Plants to Environmental StressesNiemann, P.:Untersuchungen über die Wirkung von Bodenherbiziden auf Immis‐sionsstandorten im rheinischen Braunkohlenrevier39. Deutsche Pflanzenschutz‐Tagung der Biologischen Bundesanstalt fiir Land ‐ und ForstwirtschaftHenssen, A.; Jahns, H.M.:LichenesEnvironmental Quality and SafetyOhnsorge, J.: Holm, R.:RasterelektronenmikroskopieFestveranstaltung und Internationales Kolloquium zum 75jahrigen Jubilaum der Biologischen Bundeasanstalf fiir Land‐und

ISSN:0300-1237    

DOI:10.1111/j.1439-0329.1974.tb00436.x

出版商:Blackwell Publishing Ltd    

年代:1974

数据来源: WILEY