Advanced search options

Advanced Search Options 🞨

Browse by author name (“Author name starts with…”).

Find ETDs with:

in
/  
in
/  
in
/  
in

Written in Published in Earliest date Latest date

Sorted by

Results per page:

Sorted by: relevance · author · university · dateNew search

You searched for publisher:("Van Putten & Oortmeijer"). Showing records 1 – 2 of 2 total matches.

Search Limiters

Last 2 Years | English Only

No search limiters apply to these results.

▼ Search Limiters

1. Hoof, van, H.A. Onderzoekingen over de biologische overdracht van een non-persistent virus.

Degree: 1958, Van Putten & Oortmeijer

To clarify the mechanism of transmission by aphids of a non-persistent virus, some aspects of this transmission were studied. The structure of the stylets was examined by optical and electron-microscope. Unknown ridges were observed near the apices of the maxillary and mandibulary stylets. The path of the stylets into the host plant was traced by oil-immersion microscopy into pieces of stripped epidermis. Evidence was obtained that virus was picked up by the aphid from the middle lamella of the transverse cell walls of the epidermis. Transmission by aphids of virus from pieces of stripped epidermis of diseased leaves was much more difficult than transmission from intact leaves. An attempt was made to find the cause of this hampered transmission. Virus was readily transmitted mechanically from dead tissue, but aphids could transmit virus only if tissue was living. It was concluded that the virus transmitted by aphids was in a form different from that transmitted mechanically.<p/> Advisors/Committee Members: Wageningen University, T.H. Thung, J. de Wilde.

Subjects/Keywords: plantenziekten; plantenvirussen; plant diseases; plant viruses

Record DetailsSimilar RecordsGoogle PlusoneFacebookTwitterCiteULikeMendeleyreddit

APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6th Edition):

Hoof, van, H. A. (1958). Onderzoekingen over de biologische overdracht van een non-persistent virus. (Doctoral Dissertation). Van Putten & Oortmeijer. Retrieved from http://library.wur.nl/WebQuery/wurpubs/475518 ; urn:nbn:nl:ui:32-475518 ; urn:nbn:nl:ui:32-475518 ; http://library.wur.nl/WebQuery/wurpubs/475518

Chicago Manual of Style (16th Edition):

Hoof, van, H A. “Onderzoekingen over de biologische overdracht van een non-persistent virus.” 1958. Doctoral Dissertation, Van Putten & Oortmeijer. Accessed August 17, 2019. http://library.wur.nl/WebQuery/wurpubs/475518 ; urn:nbn:nl:ui:32-475518 ; urn:nbn:nl:ui:32-475518 ; http://library.wur.nl/WebQuery/wurpubs/475518.

MLA Handbook (7th Edition):

Hoof, van, H A. “Onderzoekingen over de biologische overdracht van een non-persistent virus.” 1958. Web. 17 Aug 2019.

Vancouver:

Hoof, van HA. Onderzoekingen over de biologische overdracht van een non-persistent virus. [Internet] [Doctoral dissertation]. Van Putten & Oortmeijer; 1958. [cited 2019 Aug 17]. Available from: http://library.wur.nl/WebQuery/wurpubs/475518 ; urn:nbn:nl:ui:32-475518 ; urn:nbn:nl:ui:32-475518 ; http://library.wur.nl/WebQuery/wurpubs/475518.

Council of Science Editors:

Hoof, van HA. Onderzoekingen over de biologische overdracht van een non-persistent virus. [Doctoral Dissertation]. Van Putten & Oortmeijer; 1958. Available from: http://library.wur.nl/WebQuery/wurpubs/475518 ; urn:nbn:nl:ui:32-475518 ; urn:nbn:nl:ui:32-475518 ; http://library.wur.nl/WebQuery/wurpubs/475518

2. Sneep, J. De stand van de veredeling bij spinazie.

Degree: 1957, Van Putten & Oortmeijer

The state of spinach breeding, including the author's work at the Institute of Horticultural Plant Breeding, Wageningen, was reviewed.<p/>Certain crossing combinations had a favourable effect on the yield. The possibility of combining resistance to Peronospora spinaciae (Mont.) de Bary and mosaic (Cucumus-virus 1) made the breeding of hybrid varieties still more attractive. The work required for the removal of all male and intersexual plants from the mother variety was a serious handicap.<p/>Experiments on influencing the sex ratio and the recognition of pollen-bearing plants some time before they flower in the mother variety gave no cause for optimism. However, it was possible to breed a practically completely female first filial generation. The combination of this first filial generation as a round seeded mother variety with a prickly seeded father could bring the possibility of growing hybrid seed on a commercial scale very much nearer. Research in the field of hybrid varieties was considered to be a most important task of the research institutes.<p/>A simple method was worked out for testing young spinach plants for resistance to downy mildew, using sheets of polythene.<p/> Advisors/Committee Members: Wageningen University, J.C. Dorst.

Subjects/Keywords: spinacia oleracea; spinazie; Bladgroenten; spinacia oleracea; spinach; Leafy Vegetables; cum laude

Record DetailsSimilar RecordsGoogle PlusoneFacebookTwitterCiteULikeMendeleyreddit

APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6th Edition):

Sneep, J. (1957). De stand van de veredeling bij spinazie. (Doctoral Dissertation). Van Putten & Oortmeijer. Retrieved from http://library.wur.nl/WebQuery/wurpubs/475713 ; urn:nbn:nl:ui:32-475713 ; urn:nbn:nl:ui:32-475713 ; http://library.wur.nl/WebQuery/wurpubs/475713

Chicago Manual of Style (16th Edition):

Sneep, J. “De stand van de veredeling bij spinazie.” 1957. Doctoral Dissertation, Van Putten & Oortmeijer. Accessed August 17, 2019. http://library.wur.nl/WebQuery/wurpubs/475713 ; urn:nbn:nl:ui:32-475713 ; urn:nbn:nl:ui:32-475713 ; http://library.wur.nl/WebQuery/wurpubs/475713.

MLA Handbook (7th Edition):

Sneep, J. “De stand van de veredeling bij spinazie.” 1957. Web. 17 Aug 2019.

Vancouver:

Sneep J. De stand van de veredeling bij spinazie. [Internet] [Doctoral dissertation]. Van Putten & Oortmeijer; 1957. [cited 2019 Aug 17]. Available from: http://library.wur.nl/WebQuery/wurpubs/475713 ; urn:nbn:nl:ui:32-475713 ; urn:nbn:nl:ui:32-475713 ; http://library.wur.nl/WebQuery/wurpubs/475713.

Council of Science Editors:

Sneep J. De stand van de veredeling bij spinazie. [Doctoral Dissertation]. Van Putten & Oortmeijer; 1957. Available from: http://library.wur.nl/WebQuery/wurpubs/475713 ; urn:nbn:nl:ui:32-475713 ; urn:nbn:nl:ui:32-475713 ; http://library.wur.nl/WebQuery/wurpubs/475713

.