摘要:

AbstractThe occurrence of the more important pathogenic fungi of forest trees in the areas affected by industrial air pollutants in Poland has been investigated. The fungi are seen to respond in a pattern such that SO2and its derivatives act either fungistatically, or as stimulators depending on concentration.

ISSN:0300-1237    

DOI:10.1111/j.1439-0329.1973.tb00387.x

出版商:Blackwell Publishing Ltd    

年代:1973

数据来源: WILEY

摘要:

AbstractCultivars ofPaeoniadiffered widely in their resistance toCronartium flaccidumin Norway; ‘Globe of Light’ and ‘Noémie Demay’ were found to be immune. The practical importance for silviculture and horticulture is d

ISSN:0300-1237    

DOI:10.1111/j.1439-0329.1973.tb00388.x

出版商:Blackwell Publishing Ltd    

年代:1973

数据来源: WILEY

摘要:

AbstractMorphological and taxonomical studies in Naemacyclus niveus (Pers. ex Fr.) Fuck. ex Sacc. and related species. Biometrical studies of apothecia, ascospores and pycnospores suggest that two species ofNaemacyclusexist on pine needles; each has a characteristic host‐relationship. One isNaemacyclus niveus(Pers. ex Fr.) Fuck. ex Sacc., the original species of Persoon; the other is described here asNaemacyclus minornov. spe

ISSN:0300-1237    

DOI:10.1111/j.1439-0329.1973.tb00389.x

出版商:Blackwell Publishing Ltd    

年代:1973

数据来源: WILEY

摘要:

AbstractThe seasonal fluctuation in the production of coremia byCeratocystis ulmi(Buis.) was studied on elm stem discs taken from trees felled in April, June, July, September, October and November 1971 at Valcartier, Quebec. More coremia formed on stem discs of trees felled during the growing season. Except for trees felled in October and November, more coremia formed on sapwood than on heartwood. Evidence obtained during the study showed that the compounds, which trigger coremia formation, are not uniformly distributed within and between trees or throughout the period from April to November.

ISSN:0300-1237    

DOI:10.1111/j.1439-0329.1973.tb00390.x

出版商:Blackwell Publishing Ltd    

年代:1973

数据来源: WILEY

摘要:

AbstractLinear growth of wood‐decomposing fungi on an agar medium was usually retarded, but in some cases enhanced, by terpenoids in gaseous form. Increased dry matter production was demonstrated in someConiophora, Peniophora, StereumandPolyporusspecies exposed to the vapours of longifolene, α‐pinene, β‐pinene, Δ‐3‐carene, limonene or a mixture of cuparene and thujopsene. The positive response to longifolene in some cases seemed to involve a more efficient utilisation of the glucose i

ISSN:0300-1237    

DOI:10.1111/j.1439-0329.1973.tb00391.x

出版商:Blackwell Publishing Ltd    

年代:1973

数据来源: WILEY

摘要:

AbstractComparative Study of Phenolic Contents in Oak Galls. Determinations on galls ofQuercusshow that phenolic compounds and especially tannins do not systematically accumulate in these proliferations. On the contrary, their phenolic content is highly variable and differs between species. Their composition depends apparently not only on the pathogenic agent and the attacked organ, but also on the physiological state of the plant.

ISSN:0300-1237    

DOI:10.1111/j.1439-0329.1973.tb00392.x

出版商:Blackwell Publishing Ltd    

年代:1973

数据来源: WILEY

ISSN:0300-1237    

DOI:10.1111/j.1439-0329.1973.tb00393.x

出版商:Blackwell Publishing Ltd    

年代:1973

数据来源: WILEY