Cucurbit Genetics Cooperative Report 4:19-20 (article 9) 1981 R. W. Robinson and J. W. Shail New York State Agricultural Experiment Station, Geneva, NY 14456 A cucumber plant with a three-fold increase in hypocotyl length was found in the F2 generation after treatment of seed of ‘Lemon’ with thermal neutron radiation. Discrete segregation occurred in the […]
Month: July 1981
Pathogenicity of Isolates of Didymella bryoniae and Reisolation of the Fungus Out of Symptomless Plants
Cucurbit Genetics Cooperative Report 4:17-19 (article 8) 1981 A. P. M. den Nijs and A. C. van der Giessen Institute for Horticultural Plant Breeding (IVT), P. O. B. 16, Wageningen, The Netherlands Five different isolates of Didymella bryoniae (Auersw.) Rehm, causal fungus of fruit and stem rot, were separately used to inoculate three cucumber genotypes […]
The Effects of Fermentation and Storage Time on Germination of Cucumber Seeds at Optimal and Suboptimal Temperatures
Cucurbit Genetics Cooperative Report 4:13-16 (article 7) 1981 James Nienhuis and R. L. Lower University of Wisconsin, Madison, WI 53706 One technique commonly used to clean cucumber seeds is to scrape the placental tissue and seed from the seed cavity and allow natural fermentation to occur for a given length of time. At temperatures between […]
An Estimate of the Heritability of Low Temperature Seed Germination in Cucumber
Cucurbit Genetics Cooperative Report 4:12-13 (article 6) 1981 James Nienhuis and R. L. Lower University of Wisconsin, Madison, WI 53706 Reduced germination in low temperature spring soils often results in erratic stands and reduced yield potential in many agronomic and horticultural crops. For this reason, numerous breeding programs and genetic studies have been initiated with […]
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 […]
1981 Cucumber Reports
Report No. 4 Cucumber (Cucumis sativus) Investigations into the characteristics of seeds from compact cucumber plants M.D. Edwards and R.L. Lower (USA) CGC 4:2-3 (1981) Variability for seed quality among fruit from individual compact cucumber plants M.D. Edwards and R.L. Lower (USA) CGC 4:4-5 (1981) In vitro growth and sporulation of Didymella bryoniae and a glasshouse method for […]
Effects of Ethylene on Hermaphroditic Cucumbers
Cucurbit Genetics Cooperative Report 4:8-10 (article 4) 1981 Amy Iezzoni and C. E. Peterson University of Wisconsin, Madison, WI 53706 Ethrel, an ethylene releasing compound, has been demonstrated to alter the growth and flowering habit of monoecious cucumbers. Several of the most striking alterations include a decrease in internode length and a reduction of staminate […]
In Vitro and Sporulation of Didymella bryoniae and a Glasshouse Method for Screening for Resistance of Cucumber
Cucurbit Genetics Cooperative Report 4:6-8 (article 3) 1981 A. C. van der Giessen and A. P. M. den Nijs Institute for Horticultural Plant Breeding, P. O. B. 16, The Netherlands At the Institute for Horticultural Plant Breeding (IVT) a breeding project for resistance against Didymella bryoniae (Auersw.) Rehm, syn. Mycosphaerella citrullina (C.O.Sm.) Gross. (common names: […]
Seedling Death in Interspecific Crosses with Cucumis africanus L.f.
Cucurbit Genetics Cooperative Report 4:58-60 (article 30) 1981 A. P. M. den Nijs, D. L. Visser and J. B. M. Custers Institute for Horticultural Plant Breeding, P. O. Box 16, Wageningen, The Netherlands Three interspecific crosses with Cucumis africanus L.f. out of our crossability analysis of African Cucumis species (4) set seed, most of which […]
Species Crosses Under Controlled Temperature Conditions
Cucurbit Genetics Cooperative Report 4:56-57 (article 29) 1981 Y. O. Kho, J. Franken and A. P. M. den Nijs Institute for Horticultural Plant Breeding, P. O. Box 16, Wageningen, The Netherlands Pollen tube behavior and fertilization in selected crosses between species of Cucumis were studied at different temperatures in glasshouses of the I. V. T. […]