摘要:

Structure of some teratologic valves of Navicula gallica (W. Smith) Van Heurck.—The more frequent alterations of some structural elements ofN. gallicavalves cultivatedin vitrofor a few years are described: the valvar contour, the axial area, the raphe, the shape and size of the central nodule, the pores and spinulae.

ISSN:0017-0070    

DOI:10.1080/11263507809426604

出版商:Taylor & Francis Group    

年代:1978

数据来源: Taylor

摘要:

Studies on hard-bottom settlements of Ischia harbour. Photophilic Infralittoral: II. Diatoms.—Diatom microflora distribution has been studied along a horizontal transect from the outer to the inner sections of Ischia harbour. Both the descriptive and the structural analysis, the latter performed by the factorial analysis of correspondences, seem to indicate that water movement is the most important factor affecting the observed distribution. Three biocoenotical groups can be identified: 1) photophilic, infralittoral semiexposed group; 2) hypercalm water infralittoral group; 3) wide-distribution group.

ISSN:0017-0070    

DOI:10.1080/11263507809426605

出版商:Taylor & Francis Group    

年代:1978

数据来源: Taylor

摘要:

Studies on the genus Peyssonnelia (Rhodophyceae). X. Presence of Peyssonnelia codana (Rosenvinge) Denizot in the Mediterranean.—Peyssonnelia codana(Rosenvinge) Denizot, previously known only from Denmark, is recorded from the vicinity of a thermal power plant outlet (Martigues-Ponteau, Gulf of Fos, France). Mediterranean specimens are described and new details about the morphology of sporangial and sexual nemathecia are given.

ISSN:0017-0070    

DOI:10.1080/11263507809426606

出版商:Taylor & Francis Group    

年代:1978

数据来源: Taylor

摘要:

Nucellar embryogenesis and « in vitro » plant development from the nucelli of some species of Citrus.—Studies on the nucellar embryogenesis have been carried aut throughin vitroculture of the nucelli into basal mediumMSsupplemented with malt extract and adenine or 6-methylaminopurine.

ISSN:0017-0070    

DOI:10.1080/11263507809426607

出版商:Taylor & Francis Group    

年代:1978

数据来源: Taylor

摘要:

Distribution of Phyteuma betonicifolium Vill. and P. zahlbruckneri Vest in the south-eastern Alps.—The scarcely known distribution of two « closely related species »Phyteuma betonicifoliumVill. andP. zahlbruckneriVest has been investigated. These species are longitudinal vicarisms: the centralwestern and endoalpine spreading ofP. betonicifoliumshows a preference for a continental climate, and the south-eastern and exoalpine distribution ofP. zahlbruckneriindicates a more termophilous nature.

ISSN:0017-0070    

DOI:10.1080/11263507809426608

出版商:Taylor & Francis Group    

年代:1978

数据来源: Taylor

摘要:

A contribution to the knowledge of Laboulbeniales (Ascomycetes) parasitic on Italian Staphylinidae (Insecta, Coleoptera).—Three new Laboulbeniales occurring on Italian Staphylinidae are described:Corethromyces scimbalii, parasitic onScimbalium analeNordm. (Paederinae),Diplomyces clavifer, parasitic onErichsonius signaticornis(Muls. & Rey) (Staphylininae), andRickia zanettii, parasitic onOmalium excavatumSteph. (Omaliinae). Furthermore, the following species are reported for the first time in Italy:Cantharomyces numidicusMaire,Compsomyces lestevaeThaxt.,Idiomyces peyritschiiThaxt.,Monoicomyces nigrescensThaxt.,Symplectromyces vulgaris(Thaxt.) and TeratomycesphilonthiThaxt.

ISSN:0017-0070    

DOI:10.1080/11263507809426609

出版商:Taylor & Francis Group    

年代:1978

数据来源: Taylor

摘要:

Research on the rhizosphere of Loudetia simplex C. E. Hubbard, typical grass of Ivory Coast.—Investigations on the rhizosphere microflora ofLoudetia simplex, spontaneous grass in Lamto savannah of Ivory Coast, were carried out.

ISSN:0017-0070    

DOI:10.1080/11263507809426610

出版商:Taylor & Francis Group    

年代:1978

数据来源: Taylor

摘要:

The phytotoxic action of Irpexil (Methylacethydroxamoilacetate) on higher plants. 1: action on growth and mitotic inhibition.—The fungal secondary metabolite Irpexil (Methylacethydroxamoilacetate) shows a rather marked inhibiting effect on the growth of mono-and dycotiledons seedlings. Both length and fresh weight of the axial parts are affected, particularly in wheat and pea seedlings. The inhibiting effect is at least partially due to the antimitotic activity of this compound; Irpexil does not seem to interfere at any stage of the mitotic cycle, at least at moderate concentrations (up to 70 ppm).

ISSN:0017-0070    

DOI:10.1080/11263507809426611

出版商:Taylor & Francis Group    

年代:1978

数据来源: Taylor

ISSN:0017-0070    

DOI:10.1080/11263507809426612

出版商:Taylor & Francis Group    

年代:1978

数据来源: Taylor

摘要:

This is a scanned image of the original Editorial Board page(s) for this issue

ISSN:0017-0070    

DOI:10.1080/11263507809426603

出版商:Taylor & Francis Group    

年代:1978

数据来源: Taylor