Squash and Pumpkin (Cucurbita spp.) Attempts to cross Cucurbita moschata (Duch.) Poir. ‘Butternut’ and C. pepo L. ‘Delicata’ J.R. Baggett (USA) CGC 2:32-34 (1979) Interspecific cross between Cucurbita pepo and C. martinezii R.D.de Vaulx and M. Pitrat (France) CGC 2:35 (1979) Sex expression in Cucurbita foetidissima HBK Brenda K. Fulks, J.C. Scheerens and W.P. Bemis (USA) CGC 2:36 (1979) Six interspecific trisomics (2n C. moschata + 1 C. […]
Squash & Pumpkin Reports
The Effect of Light and Fruit Development on Internode Elongation in Cucurbita maxima Squash
Cucurbit Genetics Cooperative Report 2:40-41 (article 25) 1979 C. D. Zack and J. B. Loy University of New Hampshire, Durham, NH 03824 Bush strains of Cucurbita maxima squash exhibit a compact form of growth under field conditions during the summer, but grow in a vining manner during the fall and winter in the greenhouse in Durham, NH. […]
Electrophoretic Analysis of Protein in Single Pollen Grain of Cucurbita
Cucurbit Genetics Cooperative Report 2:39 (article 24) 1979 David L. Mulcahy, Gabrielle B. Mulcahy, and R. W. Robinson New York State Agricultural Experiment Station, Geneva, NY 14456 Analysis of individual pollen grains offers a means of determining genetic ratios with only a single heterozygous plant. The large size of Cucurbita pollen makes it possible to use […]
Bitter Cucurbita spp. as Attractants for Diabroticite Beetles
Cucurbit Genetics Cooperative Report 2:38 (article 23) 1979 R. L. Metcalf, A. M. Rhodes, Jane E. Ferguson and Esther R. Metcalf University of Illinois, Urbana-Champaign, Urbana, IL 61801 The attacks of the striped cucumber beetle, Acalymma vittata, and the spotted cucumber beetle or southern corn rootworm, Diabrotica undecimpunctata howardi, on cultivated Cucurbitaceae and of the corn rootworm, D. u. howardi, northern […]
Six Interspecific Trisomics (2n C. moschata + 1 C. palmata chromosome) and One Primary Trisomic of Cucurbita moschata
Cucurbit Genetics Cooperative Report 2:37 (article 22) 1979 J. D. Graham and W. P. Bemis University of Arizona, Tucson, AZ 85721 A fertile interspecific trisomic of Cucurbita moschata was first reported by Bemis, who added a single chromosome from the wild, perennial, xerophytic species, C. palmata, to disomic C. moschata cv, ‘Butternut’ (1). Repeating the procedure of crossing the autoallotriploid, containing […]
Sex Expression in Cucurbita foetidissima HBK
Cucurbit Genetics Cooperative Report 2:36 (article 21) 1979 Brenda K. Fulks, J. C. Scheerens, and W. P. Bemis University of Arizona, Tucson, AZ 85721 Sex expression in Cucurbita species including C. Foetidissima, the Buffalo gourd, have been considered as stable breeding monoecious species. Antherless and male sterile plants were described by Curtis (1). A population of C. foetidissima grown by Curtis […]
Interspecific Cross Between Cucurbita pepo and C. martinezii
Cucurbit Genetics Cooperative Report 2:35 (article 20) 1979 R. D. de Vaulx and M. Pitrat Station d’Amélioration des Plantes Maraîchères, I.N.R.A., Domaine Saint Maurice, 84140 Montfavet-Avignon, France Powdery mildew, cucumber mosaic virus (CMV), and watermelon mosaic virus (WMV) are important and common diseases of Cucurbita pepo in France. High levels of resistance have not been described in […]
Attempts to Cross Cucurbita moschata (Duch.) Poir. ‘Butternut’ and C. pepo L. ‘Delicata’
Cucurbit Genetics Cooperative Report 2:32-34 (article 19) 1979 J. R. Baggett Department of Horticulture, Oregon State University, Corvallis, OR 97331 Breeders have long been interested in interspecific crosses among major Cucurbita species. Whitaker (12) reviewed the research in this area of breeding. They concluded that C. moschata occupies a central position among the annual species and can be crossed with […]
Natural and Induced Mutations in C. pepo
Cucurbit Genetics Cooperative Report 1:35 (article 32) 1978 W. N. Whitwood and J. L. Weigle Robson Seed Farms, Hall, NY 14463 Mutations were induced in a cultivar of C. pepo, ‘Early Prolific Straight Neck’, by ethyl-methanesulfonate (EMS). A 0.035 m concentration of EMS was used to treat 2,000 seeds for 24 hours. The seeds were rinsed […]
Compact Mutations in Cucurbita pepo L. Induced by Ethyl-Methanesulfonate
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. […]