Cucurbit Genetics Cooperative Report 9:55 (article 16) 1986 Zijlstra, S. and A.P.M. den Nijs Institute for Horticultural Plant Breeding (IVT), and Foundation for Agricultural Plant Breeding (SVP); POB 16, 6700 AA Wageningen, the Netherlands Following earlier research (1). linkage studies for 5 pairs of genes have been continued at the Institute for Horticultural Plant Breeding […]
A.P.M. den Nijs
Resistance to Acute Gamma Irradiation of Pollen of Cucumis Species
Cucurbit Genetics Cooperative Report 8:82-84 (Article 32) 1985 Nijs, A. P. M. den, C. J. M. Denissen and M. A. P. F. Hornes Institute for Horticultural Plant Breeding (IVT), P. O. Box 16, 6700 AA Wageningen, The Netherlands The technique of in vivo egg cell transformation (3) requires that following a high dose irradiation (1 […]
Short Petiole, A Useful Seedling Marker for Genetic Studies in Cucumber
Cucurbit Genetics Cooperative Report 8:7-8 (Article 3) 1985 A.P.M. den Nijs and I.W. Boukema Institute for Horticultural Plant Breeding (IVT), P.O. Box 16, 6700 AA Wageningen, The Netherlands During a visit of the first author to the Ukrainian Research Institute of Vegetable Gardening in Charkov, USSR, Dr. M.C. Efimov demonstrated the use of the ‘short […]
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 […]
Chlorflurenol-induced Seed Coat Development in Parthenocarpic Pickling Cucumbers
Cucurbit Genetics Cooperative Report 7:10-11 (article 5) 1984 A.P.M. den Nijs and G. de Wolf Institute for Horticultural Plant Breeding, P.O. Box 16, 6700 AA Wageningen, The Netherlands Application of chlorflurenol to pickling cucumbers to accelerate and concentrate yield for once-over mechanical harvest by inducing parthenocarpic fruit set has met with difficulties related to unpredictable […]
Improving the Fertility of Tetraploid Cucumbers
Cucurbit Genetics Cooperative Report 7:12-13 (article 6) 1984 A.P.M. den Nijs and D.L. Visser Institute for Horticultural Plant Breeding (IVT), P.O.B. 16, 6700 AA Wageningen, The Netherlands In our breeding program to introduce resistance genes from wild Cucumis species into C. sativus, we have attempted to overcome crossing barriers by using tetraploid cucumbers as the […]
Umbrella Leaf: A Gene for Sensitivity to Low Humidity in Cucumber
Cucurbit Genetics Cooperative Report 6:24 (article 12) 1983 A.P.M. den Nijs and I. W. Boukema Institute for Horticultural Plant Breeding, P. O. Box 16, Wageningen, The Netherlands In a previous program to introduce parthenocarpy into the pickling cucumber, de Ponti (unpublished data) noticed distinct differences between breeding lines in their sensitivity to low relative humidity […]
Results of Linkage Studies and the Need for a Cooperative Effort to Map the Cucumber Genome
Cucurbit Genetics Cooperative Report 6:22-23 (article 11) 1983 A.P.M. den Nijs and I. W. Boukema Institute for Horticultural Plant Breeding, P. O. Box 16, Wageningen, The Netherlands Since the first comprehensive compilation of the genes of the Cucurbitaceae (1), several additions have been published by the Cucurbit Gene List Committee of the Cucurbit Genetics Cooperative […]
Genetic Evidence for Substantial Lateral Growth of Pollen Tubes in the Cucumber Ovary
Cucurbit Genetics Cooperative Report 6:20-22 (article 10) 1983 A.P.M. den Nijs Institute for Horticultural Plant Breeding, P. O. Box 16, Wageningen, The Netherlands Competition of two types of pollen for the available ovules impedes the success of mentor pollen aiding interspecific crosses in cucumber (2). Mixed pollinations such as those involving mentor pollen are only […]
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 […]