Cucurbit Genetics Cooperative Report 1:34 (article 31) 1978 W. N. Whitwood and J. L. Weigle Robson Seed Farms, Hall, NY 14463 Seeds of Cucurbita pepo cv. Early prolific Straight Neck, were treated with a .035M solution of ethyl- methanesulfonate (EMS) for twenty-four hours at room temperature. The M1 plants were selfed in the field to form the M2 generation. […]
Month: July 1978
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 […]
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 […]
Insect Associations with Cucurbita in Illinois
Cucurbit Genetics Cooperative Report 1:30 (article 28) 1978 A. M. Rhodes, W. L. Howe, R. L. Metcalf and P. Y. Lu University of Illinois, Urbana, IL 61801 For the past seven years we have evaluated the host preference of several insect species that were attracted to five cultivated and 14 mesophytic and xerophytic wild Cucurbita spp. The […]
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. […]
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 […]
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 […]
The Versatility of the Feral Buffalo Gourd, Cucurbita foetidissima HBK
Cucurbit Genetics Cooperative Report 1:25 (article 24) 1978 W. P. Bemis University of Arizona, Tucson, AZ 85721 A wild perennial gourd, native to the arid regions of Western North America may be the key to additional food and feed crops adapted to low water use agriculture. This plant is Cucurbita foetidissima HBK, the Buffalo gourd. It has […]
Watermelon: Breeding for Resistance to Mycosphaerella citrullina and Colletotrichum lagenarium
Cucurbit Genetics Cooperative Report 1:24 (article 23) 1978 J. D. Norton Auburn University Agricultural Experiment Station, Auburn, AL 36830 Severe crop losses and reduced yields of melons have resulted from gummy stem blight Mycosphaerella citrullina in certain fields in Alabama. Although the damage seemed to be more widespread in the Gulf Coast area, there have been frequent […]
A Watermelon Bulk Population with Resistance to Cucumber Beetles
Cucurbit Genetics Cooperative Report 1:23-24 (article 22) 1978 O. L. Chambliss and J. D. Norton Auburn University Agricultural Experiment Station, Auburn, AL 36830 A bulk population of cucumber beetle resistant watermelon has been developed from resistant single plant selection grown in minimum isolation and allowed to open-pollinate for three generations. The original population was grown […]