摘要:

AbstractCauses and critcria of resistance to air pollution in Norway spruce. II. Reflexive resistance. The different reactions of stomata of resistant and “normal” spruce grafts were investigated. Resistant grafts were shown to have a more sensitive reaction by measuring water potentials and by analyzing S content in SO2fumigated needles or F contents in grafts exposed to polluted air. Other tcsts involving gas permeability of stomata, clecrrical conductivity of needle cxtracts and watcr content of SO2fumigated needles were less effect

ISSN:0300-1237    

DOI:10.1111/j.1439-0329.1977.tb00570.x

出版商:Blackwell Publishing Ltd    

年代:1977

数据来源: WILEY

摘要:

AbstractSantalum albumLinn. in its natural habitat is parasitic on a number of herbs, shrubs and trees.Of these host little‐leaf disease is common inStachytarpheta, Dendrocalamus, Randia, Dichrastacbys, Acacia, Eucalyptus, BarleriaandScutia. Mycoplasma‐like‐organisms have been confirmed on some of the hosts by means of electron micro

ISSN:0300-1237    

DOI:10.1111/j.1439-0329.1977.tb00571.x

出版商:Blackwell Publishing Ltd    

年代:1977

数据来源: WILEY

摘要:

AbstractVarious silvicultural operations are discussed with special reference to provention of damage and disease in forest trees by their correct application.

ISSN:0300-1237    

DOI:10.1111/j.1439-0329.1977.tb00572.x

出版商:Blackwell Publishing Ltd    

年代:1977

数据来源: WILEY

摘要:

AbstractThe mycelial yield ofTrichoderma virideon a number of carbon sources and the inhibitory effect of its filtrates onFomes annosuswere investigated. d‐Xylose and d‐glucose as carbon sources in the media gave the highest degree of inhibition when their filtrates were directly tested againstF. annosusmycelium. The protection of pine wood blocks with filtrates was most effective when these were derived from cellulose and d‐x

ISSN:0300-1237    

DOI:10.1111/j.1439-0329.1977.tb00573.x

出版商:Blackwell Publishing Ltd    

年代:1977

数据来源: WILEY

摘要:

AbstractPot experiments were performed to investigate the effects of Tritluralin on the mycorrhizal symbiosis of conifer seedlings. Infected forcst soils and potting mixturcs were mixed, pottcd and treated with Trifluralin at levels of 0.2 and 0.4ml/m2Seeds ofPinus sylvestris L. andPicea abies(L.) Karst. were sown in the pots.The concentrations tested, though recommended by the manufacturer produced phytotoxicity. The seedling growth in general and that of the rootsystem and laceral roots in particular, were severely inhibited. Mycorrhizal development in the seedlings was consequently adversely affected.

ISSN:0300-1237    

DOI:10.1111/j.1439-0329.1977.tb00574.x

出版商:Blackwell Publishing Ltd    

年代:1977

数据来源: WILEY

ISSN:0300-1237    

DOI:10.1111/j.1439-0329.1977.tb00575.x

出版商:Blackwell Publishing Ltd    

年代:1977

数据来源: WILEY

摘要:

AbstractAt least three quarters of the sites of brash fires in a mainly coniferous area on peat in Co Tyrone, Northern Ireland were clonised byRhizina undulata. On each of these sites an average of eight newly plantedPicea abiesdied within five years. No more deaths were recorded during a further three years. Deaths ofPicea abiesseldom occurred where there had been no fire or on fire sites on hardwood stumps in the same area.

ISSN:0300-1237    

DOI:10.1111/j.1439-0329.1977.tb00576.x

出版商:Blackwell Publishing Ltd    

年代:1977

数据来源: WILEY

摘要:

AbstractHosts of Fomes annosus (Fr.) Cke in France.Records ofFomes annosusin France since 1875 are listed. They include several examples not given in Sinclair's 1964 account and also include seven new hosts.

ISSN:0300-1237    

DOI:10.1111/j.1439-0329.1977.tb00577.x

出版商:Blackwell Publishing Ltd    

年代:1977

数据来源: WILEY

摘要:

Book reviewed in this article:Burnett, J. H.:Fundamentals of Mycology.Report of Forest Research Institut 1975.

ISSN:0300-1237    

DOI:10.1111/j.1439-0329.1977.tb00579.x

出版商:Blackwell Publishing Ltd    

年代:1977

数据来源: WILEY