Cucurbit Genetics Cooperative Report 1:14 (article 13) 1978 R. W. Robinson New York Agricultural Experiment Station, Geneva, NY 14456 The glabrous (gl) gene of the cucumber was induced by thermal neutron seed treatment. It is a useful seedling marker gene, since the mutant is readily identified in the young seedling stage as well as at all […]
Cucumber Reports
Mutagenic Experiments with the Cucumber
Cucurbit Genetics Cooperative Report 1:13 (article 12) 1978 R. W. Robinson New York Agricultural Experiment Station, Geneva, NY 14456 Chemical and irradiation treatments were applied to cucumber seed to induce gene mutations. Mutagenic agents and doses that were successful include 5,000 to 30,000¥ x- rays, 9 to 18 hours of thermal neutrons, 0.5 to 2% […]
Linkage of Male Sterility and Sex Expression Genes in Cucumber
Cucurbit Genetics Cooperative Report 1:13 (article 11) 1978 R. W. Robinson New York Agricultural Experiment Station, Geneva, NY 14456 A male sterile cucumber, obtained from N. Nakamura, was pollinated with the cultivar ‘Lemon’. Linkage was detected between male sterility and the m gene for monoecious vs. andromonoecious sex expression and the l locule number gene (Table 1). The male […]
Gene Linkage in the ‘Lemon’ Cucumber
Cucurbit Genetics Cooperative Report 1:12 (article 10) 1978 R. W. Robinson New York Agricultural Experiment Station, Geneva, NY 14456 The ‘Lemon’ cucumber is an interesting novelty. Named after its round, yellow fruit, it was apparently introduced in the early 1890’s. The slight resemblance of its fruit to a citrus gave a rise to an ingenious […]
Linkage relations of genes for tolerance to powdery mildew in cucumber
Cucurbit Genetics Cooperative Report 1:11 (article 9) 1978 R. W. Robinson New York Agricultural Experiment Station, Geneva, NY 14456 The F1 of powdery mildew tolerant ‘Ashley’ x susceptible ‘Lemon’ was susceptible to Sphaerotheca fuliginea. The F2 segregated 193 susceptible; 248 tolerant, in a good agreement (p = .5 -.7) with the 27:37 ratio expected if tolerance were […]
Fasciation in the Cucumber
Cucurbit Genetics Cooperative Report 1:11 (article 8) 1978 R. W. Robinson New York Agricultural Experiment Station, Geneva, NY 14456 Fasciated plants with wide, flattened stems and increased numbers of leaves, tendrils, and flowers per node, frequently occur in the cucumber cultivar ‘Lemon’ and other andromonoecious cucumber cultivars. Fasciation is associated with opposite leaf arrangement at […]
Association of Fruit Shape and Sex Expression in the Cucumber
Cucurbit Genetics Cooperative Report 1:10 (article 7) 1978 R. W. Robinson New York Agricultural Experiment Station, Geneva, NY 14456 It has been proposed that a single recessive gene (m) conditions andromonoecious sex expression, and a different but very closely linked locus governs round versus elongated fruit shape in the cucumber. I have never found a […]
Effects of Silver Nitrate and Gibberellic Acid on Gynoecious Cucumber
Cucurbit Genetics Cooperative Report 1:8-9 (article 6) 1978 R. L. Lower, D. M. Pharr and E. K. Horst North Carolina State University, Raleigh, NC 27650 Research by Beyer (1) and by De Ponti and Kho (2) discuss the effects of silver nitrate alone, and in combination with gibberellic acid, respectively, on sex expression of cucumber. […]
An Interspecific Cross Between Cucumber (Cucumis sativus and Muskmelon (Cucumis melo)
Cucurbit Genetics Cooperative Report 1:6-8 (article 5) 1978 B. J. van der Knaap and A. C. de Ruiter Deruiterzonen B. V., Bleiswijk, The Netherlands In 1971, we started a program for making an interspecific cross between a cucumber and melon. If such a cross would succeed, it would enable us to exchange certain genes between […]
Cucumis hardwickii: A Source of Germplasm for the Cucumber Breeder
Cucurbit Genetics Cooperative Report 1:5 (article 4) 1978 E. K. Horst and R. L. Lower North Carolina State University, Raleigh, NC 27650 Cucumis hardwickii, an annual monoecious cucurbit species resembling C. sativus, hybridizes readily with C. sativus, producing a fertile F1 with no observed reduction of fertility in the F2. C. hardwickii sets larger numbers of fruit per plant […]