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Library Catalogue

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    Union Catalogue of Agricultural Libraries in the Netherlands

    The WUR Library Catalogue contains bibliographic data on books and periodicals held by the libraries of Wageningen University and Research Centre and some 15 associated libraries. Holding data are added to each record.

    Subjects covered include Agrotechnology, Food and Food Production, Plant and Animal Sciences, Soil Science, Geo-information, Landscape and Spatial Planning, Water and Climate, Ecosystem Studies, Economics and Society.

    The joint collections of the participating libraries cover a substantial part of the internationally available scientific literature in these disciplines.

    As far as Dutch scientific literature in these fields is concerned, coverage can be considered near 100%, including much of the so-called "grey literature".

    All titles are entered in their original language. Keywords are added to facilitate subject searching.

    The database is updated every day and now contains over 830.000 records.

Record number 104386
Title Studies on genetic and on chemically induced resistance of cucumber tissues to Cladosporium cucumerinum (Ell. & Arth.)
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door Mohamed Kamal El-Din Fouad
Author(s) Fouad, M.K.E.-D.
Publisher Wageningen : Veenman
Publication year 1956
Description 56 p ill
Description 1 online resource (56 p) ill
Notes Proefschrift Wageningen  show all notes
Ook verschenen als handelsuitgave
Tutors Oort, Prof. Dr. A.J.P.
Graduation date 1956-07-05
Dissertation no. 211
Author abstract show abstract
A detailed anatomical study was made of the host-parasite relations of cucumber seedlings inoculated with Cladosporium cucumerinum and of the effect of treatment with G33, the roots being immersed in a 100 p.p.m. solution of the compound for 48 h before inoculation. It was concluded that the resistance conferred by G33 was situated both in the cuticle and in the deeper tissues, and that the substance was effective only in cells appearing microscopically sound. The effect did not extend beyond the cuticle, and resistance did not seem to be due to plasmatic interaction.

Uptake by the roots of cucumber seedlings of 2,4-dinitrophenol, sodium diethyldithiocarbamate and sodium azide had no effect on either genetic resistance or that induced by G33. However narcosis of seedlings by exposure over solutions of 1. 5 % ether or 0.24 % chloroform caused breakdown of genetic resistance in the varieties Mabro and Proso, though these still remained resistant to Penicillium italicum and Botrytis cinerea (neither of which normally infects cucumber). But narcosis had no effect on the resistance to C. cucumerinum conferred by G33, which, unlike genetic resistance, seemed therefore unrelated to host metabolism. The sap expressed from resistant varieties and from the uninfected portions of older plants of a susceptible variety (Lange Gele Tros) did not inhibit growth of the pathogen in culture.

Online full textINTERNET
On paper FORUM ; STACKS ; NN08202,211
Keyword(s) (cab) plant pathogenic fungi / cucumis sativus / cucumbers
Categories Plant Defence, Plant Resistance
Publication type PhD thesis
Language English
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