摘要:

AbstractFomes annosuswas cultivated subject to vapours of monoterpenes. Three monoterpenes were tested separately: α‐pinene, β‐pinene and 3‐carene. The terpenes inhibited the dry matter production of the fungus but extracellular phenol oxidase activity was increased, particularly when the fungus was exposed to vapours of β‐pinene an

ISSN:0300-1237    

DOI:10.1111/j.1439-0329.1979.tb00653.x

出版商:Blackwell Publishing Ltd    

年代:1979

数据来源: WILEY

摘要:

AbstractEffect of low SO2‐concentrations on the activities of some glycosidases in the foliage of clonal forest trees.The aim was to find an early indicator of latent SO2injuries in a beech and a spruce clone. After exposure to 0.0, 0.05, 0.1 and 0.2 ppm for several weeks in outdoor fumigation chambers, the activities of β‐glucosidase in the beech and β‐galactosidase in the spruce clone and β‐l,3‐glucanase in both species were significantly raised. As the beech clone was very sensitive to SO2, an indication of latent injury could be ascertained only in the 0.05 ppm treatment where the rise of the β‐glucosidase activity appeared some days before necroses. Contrary to beech, the spruce clone was tolerant to all SO2‐treatments and the enzymatical changes could be used as early indicators o

ISSN:0300-1237    

DOI:10.1111/j.1439-0329.1979.tb00654.x

出版商:Blackwell Publishing Ltd    

年代:1979

数据来源: WILEY

摘要:

AbstractDecay resulting from increment borings varies with tree species. Trembling aspen(Populus tremuloidcsMichx.) in Newfoundland is seriously affected by this particular wound. Three years after 20 trees had been bored, none had healed probably because of a pronounced split of the bark. The wood discoloration extended horizontally to about 2 cm on each side and vertically half metre above and below the wound.Peniophora polygonia(Pers. ex Fr.) Bourd. et Galz. was the most common fungus isolated whilePolyporus adustusWilld. ex Fr. and several imperfect fungi and bacteria were also present.

ISSN:0300-1237    

DOI:10.1111/j.1439-0329.1979.tb00655.x

出版商:Blackwell Publishing Ltd    

年代:1979

数据来源: WILEY

摘要:

AbstractSpruce mycorrhizac and heart rot incidence caused by Fomes annosus in southwestern Germany.Naturally occurring spruce mycorrhizac on calcareous soils of southwestern Germany were investigated and classified. These soils are characterized by a relatively high incidence of heart rot caused byFomes annosus. On comparable sites stand history (former woodlands versus former sheep pastures), though influencing heart rot incidence, had no effect on the overall distribution of mycorrhizal types. The occurrence of rare types, however, varied between sites with different stand history. For all mycorrhizal types found, isolation of the fungal symbiont was attempted. Where isolation was successful, the isolates showed no antibiotic activity againstFomes annosus.

ISSN:0300-1237    

DOI:10.1111/j.1439-0329.1979.tb00656.x

出版商:Blackwell Publishing Ltd    

年代:1979

数据来源: WILEY

摘要:

AbstractTemperature and pH requirements for mycelial growth and conidial germination were investigated for variousRhizosphaera kalkhoffiiisolates. Conidial germination was also tested on spruce needles. Some factors of host susceptibility were determined using needle extract agar and buffer‐capacity of needle sa

ISSN:0300-1237    

DOI:10.1111/j.1439-0329.1979.tb00657.x

出版商:Blackwell Publishing Ltd    

年代:1979

数据来源: WILEY

摘要:

AbstractFurther studies on differing susceptibilities of Pinus nigra clones to Scleroderris lagerbergii.In a seed orchard 14 clones of Austrian black pine(Pinus nigrassp.nigra)showed significant differences of susceptibility toScleroderris lagerbergii. Significant clonal differences existed also in buffering capacity of homogenized bark tissue of one‐year shoots. Less susceptible clones had a higher buffering capacit

ISSN:0300-1237    

DOI:10.1111/j.1439-0329.1979.tb00658.x

出版商:Blackwell Publishing Ltd    

年代:1979

数据来源: WILEY

摘要:

AbstractFluorometric examination of the relative insistence to SO2of Norway spruce (Picea abies [L.] karst.) using low molecular metabolites from needle extracts.Relatively resistant and “normal” spruce grafts were shown by a fluorometric method to possess different concentrations of fluorescent needle metabolites. The described method could be useful in verifying resistence qualities of Norway spr

ISSN:0300-1237    

DOI:10.1111/j.1439-0329.1979.tb00659.x

出版商:Blackwell Publishing Ltd    

年代:1979

数据来源: WILEY

摘要:

AbstractOn logs of Norway spruce, discarded and left lying after thinning because of severe decay byFomes annosus, numerous sporocarps ofF. annosusdevelop after one to two years. The surface area, position, number, and time of appearance of the fruiting bodies varied between two test areas. Removal of rotted logs is recommended as a prophylactic method ofFomescontrol inPicea abiesstands.

ISSN:0300-1237    

DOI:10.1111/j.1439-0329.1979.tb00660.x

出版商:Blackwell Publishing Ltd    

年代:1979

数据来源: WILEY

ISSN:0300-1237    

DOI:10.1111/j.1439-0329.1979.tb00661.x

出版商:Blackwell Publishing Ltd    

年代:1979

数据来源: WILEY

摘要:

Books reviwed in this article:Olschowy, G.:Natur‐ und Umweltscgutz in der Bundesrepublik Deutschland. Unter Mitwirkung von 78 Autoren.Moser, M.:Kleine KryptogamenfloraCoppel, H. C.; Mertins, J. W.:Biological Insect Pest Suppressi

ISSN:0300-1237    

DOI:10.1111/j.1439-0329.1979.tb00662.x

出版商:Blackwell Publishing Ltd    

年代:1979

数据来源: WILEY