Cucurbit Genetics Cooperative Report 6:27-28 (article 14) 1983 O. M. B. de Ponti, G. G. Kennedy, and F. Gould Institute for Horticultural Plant Breeding, P.O. Box 16, 6700 AA Wageningen, The Netherlands (first author); North Carolina State University, Raleigh, NC 27650 (second and third authors) Opinions on the relation between the bitter principle cucurbitacin-C and […]
o. M. B. de Ponti
Intermediary Inheritance of Glabrousness (gl) in Cucumber
Cucurbit Genetics Cooperative Report 6:8-9 (article 4) 1983 H. Inggamer and O.M.B. de Ponti Institute for Horticultural Plant Breeding, P.O.B. 16, 6700 AA Wageningen, The Netherlands In order to improve the biological control of the glasshouse whitefly (Trialeurodes vaporariorum) with the parasitic wasp Encarsia formosa, glabrous cucumber mutants were introduced from the USSR and the USA (1). The […]
A Second Source of Non-bitterness in Cucumber
Cucurbit Genetics Cooperative Report 4:11 (article 5) 1981 H. Inggamer and O. M. B. de Ponti Institute for Horticultural Plant Breeding, Wageningen, The Netherlands The non-bitter character is commercially of vital importance in The Netherlands, bitter cucumbers being unwanted and thus unsalable. In the 1950s, a continuous search went on at the IVT for non-bitter […]
The Identity of Genes for Glabrousness in Cucumis sativus L.
Cucurbit Genetics Cooperative Report 3:14 (article 8) 1980 H. Inggamer and O.M.B. de Ponti Institute for Horticultural Plant Breeding, Wageningen, The Netherlands The occurrence of glabrous cucumber has been reported from the USSR and the USA. In the USSR the cucumbers in question are the spontaneous mutants Odnostebelnyi 33 and Mayak 422, which were found at […]
Development and Release of Breeding Lines of Cucumber with Resistance to the Twospotted Spider Mite, Tetranychus urticae Koch
Cucurbit Genetics Cooperative Report 2:6-7 (article 3) 1979 o. M. B. de Ponti Institute for Horticultural Plant Breeding, Wageningen, The Netherlands Based on a thorough study of the host-parasite relationship using cucumber varieties with different levels of resistance to the twospotted spider mite, two resistance tests were developed: a laboratory test (1) measuring acceptance and […]
Breeding Glabrous Cucumber Varieties to Improve the Biological Control of the Glasshouse Whitefly
Cucurbit Genetics Cooperative Report 2:5 (article 2) 1979 O. M. B. de Ponti Institute for Horticultural Plant Breeding, Wageningen, The Netherlands On glasshouse tomatoes in the Netherlands, the biological control of the glasshouse whitefly (Trialeurodes vaporariorum Westwood) with the parasitic wasp (Encarsia formosa Gahan) is successfully applied on an ever increasing scale. On glasshouse cucumbers, however, despite repeated and […]