Cucurbit Genetics Cooperative Report 6:14-15 (article 7) 1983 David P. Lane and Henry M. Munger Cornell University, Ithaca, NY 14853 In cucumber breeding plots at Ithaca, cucumber mosaic virus (CMV) resistant progenies with ‘Ashley’ and ‘Poinsett’ in their parentage have repeatedly shown more severe leafspot symptoms and earlier defoliation than other cucumbers with comparable CMV […]
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A Second Long Hypocotyl Mutant at the lh Locus
Cucurbit Genetics Cooperative Report 6:13 (article 6) 1983 M. Koornneef and B. J. van der Knaap Department of Genetics, Agricultural University, Wageningen, The Netherlands (first author); Deruiterzonen B.V., Bleiswijk, The Netherlands (second author) Monogenic mutants having an elongated hypocotyl when grown in white light have been described for several loci in plants like Arabidopsis thaliana (2) and […]
A System for the Measurement of Foliar Diseases of Cucumber
Cucurbit Genetics Cooperative Report 6:10-12 (article 5) 1983 S. F. Jenkins, Jr. and T. C. Wehner North Carolina State University, Raleigh, NC 27650 Several pathogenic microorganisms cause injury to the foliage of pickling and slicing cucumbers (Table 1). The pathogens may cause injury to all above-ground parts including the leaves, stems, petioles, peduncles and fruit. […]
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 […]
Two Sources Conferring Partial Dominant Resistance to Powdery Mildew (Sphaerotheca fuliginea Poll.) in Cucumber
Cucurbit Genetics CooperAli El Jack and Henry M. Munger Cornell University, Ithaca, NY 14853ative Report 6:7-8 (article 3) 1983 Ali El Jack and Henry M. Munger Cornell University, Ithaca, NY 14853 In cucumber, nearly all crosses of powdery mildew resistant (PMR) x susceptible parents yield fully susceptible F1s. In a backcross program to transfer PMR […]
Effect of Inbreeding on Seed Traits of Compact Cucumber
Cucurbit Genetics Cooperative Report 6:5-7 (article 2) 1983 M. D. Edwards and R. L. Lower University of Wisconsin, Madison, WI 53706 Previous reports have described seed quality problems associated with the compact plant type (cp cp) in cucumbers (1). Variability exists in compact populations for emergence potential of seeds as well as for associated traits […]
Effect of Within Row Spacing on Mature Fruit Yield of Three Cucumis sativus var. hardwickii Derivatives and a Gynoecious Inbred of Cucumis sativus
Cucurbit Genetics Cooperative Report 6:3-4 (article 1) 1983 D. E. Delaney, R. L. Lower and M. D. Edwards University of Wisconsin, Madison, WI 53706 Cucumis sativus var. hardwickii has great potential as a source of germplasm for improving yield of pickling cucumbers. It is unique in that it sets large numbers of seeded fruit, and seems to lack […]
1983 Other Cucurbit Genera and Species Reports
Report No. 6 Other Genera and Species Mentor pollen in an interspecific cross in Cucumis: effects of irradiation dose and of order of application of the two types of pollen J.B.M. Custers and A.P.M. den Nijs (The Netherlands) CGC 6:94-95 (1983) An efficient procedure to screen for resistance to root knot nematodes in cucurbits A.P.M. den […]
Mentor Pollen in an Interspecific Cross in Cucumis: Effects of Irradiation Dose and of Order of Application of the Two Types of Pollen
Cucurbit Genetics Cooperative Report 6:94-95 (article 48) 1983 J. B. M. Custers and A. P. M. den Nijs Institute for Horticultural Plant Breeding, P. O. Box 16, 6700 AA Wageningen, The Netherlands In recent years we regularly used irradiated mentor pollen (IMP) as a pollination aid in interspecific hybridization in Cucumis. When the control cross […]
An Efficient Procedure to Screen for Resistance to Root Knot Nematodes in Cucurbits
Cucurbit Genetics Cooperative Report 6:96-98 (article 49) 1983 A. P. M. den Nijs and K. Hofman Institute for Horticultural Plant Breeding, P. O. Box 16, Wageningen, The Netherlands Screening for resistance to root knot nematodes is normally carried out in nematode-infested soil. Seeds, seedlings or young plants are placed in the infested soil and, after […]