Interspecific Hybridization of Cucumis

Cucurbit Genetics Cooperative Report 1:40 (article 37) 1978 R. W. Robinson and E. Kowalewski New York Agricultural Experiment Station, Geneva, NY 14456 Diallel reciprocal cross pollinations were made among cucumber, muskmelon, and l9 wild species of Cucumis. The only species that crossed with the cucumber was C. Hardwickii; and C. trigonus and C. callosus were the only species to cross with […]

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Comparative Electrophoresis of Isozymes of Cucumis Species

Cucurbit Genetics Cooperative Report 1:39 (article 36) 1978 J. T. Puchalski, R. W. Robinson, and J. W. Shail New York Agricultural Experiment Station, Geneva, NY 14456 Electrophoretic patterns of esterase, peroxidase, and leucine aminopeptidase of 24 different Cucumis species were compared. Large differences between several species were found for all these enzyme systems, but some other species […]

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White Fly Resistance in Cucumis Species

Cucurbit Genetics Cooperative Report 1:38 (article 34) 1978 E. Kowalewski3 and R. W. Robinson New York State Agricultural Experiment Station, Geneva, NY 14456 Cucumis species were evaluated for resistance to natural infestation with white flies in the greenhouse. Scanning electron and stereoscope microscope studies were made to determine if white fly resistance is related to morphology or […]

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Genetic differences in Sex Expression and Response to Ethephon in Summer Squash, Cucurbita pepo L.

Cucurbit Genetics Cooperative Report 1:33 (article 30) 1978 S. Shannon and R. W. Robinson New York Agricultural Experiment Station, Geneva, NY 14456 Problems have been encountered in the commercial production of hybrid seed of summer squash when recommended rates of ethephon application were used to inhibit staminate flower production on the maternal inbred parent. The […]

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Gynoecious Sex Expression in Cucurbita Resulting from an Interspecific Cross

Cucurbit Genetics Cooperative Report 1:31-32 (article 29) 1978 R. W. Robinson, M. A. Boettger, and J. W. Shail New York Agricultural Experiment Station, Geneva, NY 14456 The ‘Buttercup’ and ‘Golden Delicious’ cultivars of Cucurbita maxima were crossed with the ‘Butternut’ and ‘Waltham Butternut’ cultivars of C. moschata. Each parent was monoecious, producing many more staminate than pistillate flowers. Each […]

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Genetic Variation of Esterases and Peroxidases in an Interspecific Cucurbita Cross

Cucurbit Genetics Cooperative Report 1:29 (article 27) 1978 J. T. Puchalski, R. W. Robinson, and J. W. Shail New York Agricultural Experiment Station, Geneva, NY 14456 The aim of this preliminary study was to investigate the inheritance and linkage relations of multiple electrophoretic forms of esterases and peroxidases in an interspecific cross between Cucurbita moschata cv. ‘Butternut’ and C. […]

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Comparative Electrophoretic Analysis of Isozymes in Cucurbita Species

Cucurbit Genetics Cooperative Report 1:28 (article 26) 1978 J. T. Puchalski and R. W. Robinson New York Agricultural Experiment Station, Geneva, NY 14456 A chemotaxonomic investigation of 19 different species of the genus; Cucurbita, including all five cultivated species, was made on the basis of isozymic composition. The multiple molecular forms of esterase, peroxidase, and leucine […]

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Multiple Virus Resistance in Cucurbita species

Cucurbit Genetics Cooperative Report 1:26-27 (article 25) 1978 R. Provvidenti, R. W. Robinson and H. M. Munger New York Agricultural Experiment Station, Geneva NY 14456 Adequate levels of resistance to several viral diseases have not been found in cultivated Cucurbita species. Therefore, we tested wild species of the genus to determine if genes for virus resistance could […]

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1978 Resolution and Notes

Cucurbit Genetics Cooperative Report 1:ii-iiii Introduction 1978 Resolution and notes of organization meeting, October 28, 1976, Denver Hilton, Denver, Colorado, U.S.A. The following resolution was adopted by research workers interested in organizing a Cucurbit Genetics Cooperative: The Cucurbit Genetics Cooperative is organized to develop and advance the genetics of economically important cucurbits. Membership to this […]

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