Cucurbit Genetics Cooperative Report 7:27-30 (article 13) 1984 J.E. Staub and R.S. Kupper Department of Horticulture, University of Wisconsin, Madison, WI 53706 T.C. Wehner Department of Horticultural Science, North Carolina State University, Raleigh, NC 27695-7609 Evolutionary studies in the genus Cucumis have been conducted by Dane (2) and Esquinas-Alcazar (3) using isozymes as biochemical markers. […]
Todd C. Wehner
Effect of End Borders on Plot Yield of Once-over Harvested Pickling and Fresh-market Cucumbers
Cucurbit Genetics Cooperative Report 7:31-32 (article 14) 1984 T.C. Wehner Department of Horticultural Science, North Carolina State University, Raleigh, NC 27695-7609 Yield of pickling and fresh-market cucumbers from plots harvested once-over is an efficient measure of yield in multiple-harvest trials (Wehner and Miller, unpublished data). Smith et al. (1) found the correlation between once-over and […]
Variation for Yield within Locations in Homogeneous and Heterogeneous Cucumber Populations
Cucurbit Genetics Cooperative Report 7:33-34 (article 15) 1984 Todd C. Wehner Department of Horticultural Science, North Carolina State University, Raleigh, NC 27695-7609 Environmental variation is an important source of error in evaluating yield of lines in small-plot trials. Smith et al. (2) found a large effect of environment for yield (fruit number per plot) in […]
Optimum Plot Size for Once-over Harvest of Pickling and Fresh- market Cucumbers
Cucurbit Genetics Cooperative Report 7:35-36 (article 16) 1984 T.C. Wehner and W.H. Swallow North Carolina State University, Raleigh, NC 27695 An efficient method for measuring yield in cucumbers is to count the fruit number in small plots harvested once-over. This can be done with both pickling and freshmarket cucumbers, and is a useful predictor of […]
Effect of Unequal Competition from Bordering Rows on Pickling Cucumber Yield Trial Results
Cucurbit Genetics Cooperative Report 6:38-39 (article 18) 1983 Todd C. Wehner and Conrad H. Miller Department of Horticultural Science, North Carolina State University, Raleigh, NC 27650 Plant breeders usually test new experimental lines for several years in replicated, multiple-harvest trials to determine whether the line should be released for production in a particular growing area. […]
Resistance of Cucumber to the Pickleworm
Cucurbit Genetics Cooperative Report 6:35-37 (article 17) 1983 Todd C. Wehner, George G. Kennedy and Kent D. Elsey North Carolina State University, Raleigh, NC 27650 (first and second author); United States Dept. of Agriculture, Vegetable Laboratory, Charleston, SC 29407 (third author) Pickleworm (Diaphania nitidalis Stoll.) is one of the three most important insect pests of pickling […]
Preliminary Evaluation of Isozyme Polymorphisms in Cucumis
Cucurbit Genetics Cooperative Report 6:32-34 (article 16) 1983 J. E. Staub, R. S. Kupper, and T. C. Wehner USDA/ARS, Horticulture Department, University of Wisconsin, Madison, WI 53706 (first and second author); North Carolina State University, Raleigh, NC 27650 (third author) Recently, several horticulturally important enzyme systems have come under investigation in the genus Cucumis (1, 2, 4). […]
Screening Cucumber for Resistance to Belly Rot Caused by Rhizoctonia solani
Cucurbit Genetics Cooperative Report 6:29-31 (article 15) 1983 J. T. Sloane, T. C. Wehner, and S. F. Jenkins, Jr. North Carolina State University, Raleigh, NC 27650 Belly rot of cucumber (Cucumis sativus L.) caused by Rhizoctonia solani Kuhn is an important disease in the southern U.S.A. The average annual loss of cucumbers to belly rot in the U.S. […]
Variation of Galactinol Synthase Activity in Cucumber Leaves
Cucurbit Genetics Cooperative Report 6:25-26 (article 13) 1983 D. M. Pharr, T. C. Wehner, L. W. Handley, and H. N. Sox North Carolina State University, Raleigh, NC 27650 Galactinol synthase (GS) catalizes the following reaction in cucumber leaves: UDP-galactose + myoinositol galactinol + UDP Galactinol is the immediate substrate from which galactose is transferred to […]
A System for the Measurement of Foliar Diseases of Cucumber
Cucurbit Genetics Cooperative Report 6:10-12 (article 5) 1983 S. F. Jenkins, Jr. and T. C. Wehner North Carolina State University, Raleigh, NC 27650 Several pathogenic microorganisms cause injury to the foliage of pickling and slicing cucumbers (Table 1). The pathogens may cause injury to all above-ground parts including the leaves, stems, petioles, peduncles and fruit. […]