Cucurbit Genetics Cooperative Report 7:94-95 (article 42) 1984 Custers, J.B.M. and J.H.W. Bergervoet Institute for Horticultural Plant Breeding, P.O. Box 16, 6700 AA Wageningen, The Netherlands The cross Cucumis sativus x C. melo so far failed because the embryos cease their development at the globular- shaped stage (2). Embryo culture procedures suitable for non- hybrid […]
Other Genera & Species Reports
Trisomic Identification of Linkage Groups of Cucurbita
Cucurbit Genetics Cooperative Report 7:96 (article 43) 1984 Graham, J.D., N.F. Weeden and R.W. Robinson Department of Horticultural Sciences, New York State Agricultural Experiment Station, Geneva, NY 14456 Bemis (1) synthesized trisomic stocks of Cucurbita, having 40 chromosomes of C. moschata and one from C. palmata. The five different trisomics we obtained from him are […]
Nuclear DNA Variation in Cucumis Species
Cucurbit Genetics Cooperative Report 7:97-99 (article 44) 1984 Ramachandran, C. Department of Agricultural Botany, University College of Wales, Aberystwyth, U.K. The genus Cucumis includes two sets of species with basic chromosome numbers x = 7 and x = 12, respectively. While the former group is indigenous to Asia, the latter group is believed to be […]
Monogenic Inheritance of Andromonoecy in Tetraploid Cucumis ficifolius A. Rich
Cucurbit Genetics Cooperative Report 7:100-101 (article 45) 1984 Visser, D.L. and A.P.M. den Nijs Institute for Horticultural Plant Breeding (IVT), P.O.B. 16, 6700 AA Wageningen, The Netherlands Spontaneous fruit and seed set was observed in one out of ten plants of Cucumis ficifolius A. Rich (Genebanknumber 2061, IVT collection from Kenya), grown under isolation in […]
1984 Other Cucurbit Genera and Species Reports
Report No. 7 Other Genera and Species The reliability of a seedling test for resistance to root- knot nematodes in cucurbits I.W. Boukema, G.T.M. Reuling and K. Hofman (The Netherlands) CGC 7:92-93 (1984) Embryo size in Cucumis sativus x C. melo as affected by irradiation of the pollen and genotype of the female parent J.B.M. Custers and J.H.W. Bergervoet […]
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 […]
The Occurrence of Zucchini Yellow Mosaic Virus in the United States
Cucurbit Genetics Cooperative Report 6:99 (article 50) 1983 R. Provvidenti and D. Gonsalves New York State Agricultural Experiment Station, Geneva, New York 14456 H. S. Humaydan Joseph Harris Company, Inc., Rochester, New York 14624 A new viral disease occurred in 1982 in a field of ‘Multipik’, a cultivar of yellow summer squash (Cucurbita pepo) situated […]
Variation for Interspecific Crossability of Cucumis anguria L. and C. zeyheri Sond.
Cucurbit Genetics Cooperative Report 6:100-101 (article 51) 1983 D. L. Visser and A. P. M. den Nijs Institute for Horticultural Plant Breeding, P. O. Box 16, Wageningen, The Netherlands Cucumis anguria L. and C. zeyheri Sond. are both resistant to cucumber green mottle mosaic virus, a serious disease of glasshouse cucumbers. The resistance of C. […]