Cucurbit Genetics Cooperative Report 17:120-121 (article 35) 1994 Oved Shifriss 21 Walter Avenue, Highland Park, NJ 08904 Gene B2 originated as mutation in C. maxima (1,2). This gene conditions precocious depletion of chlorophyll in fruits of all known genetic backgrounds. But in some backgrounds, B2 is also expressed in one or more other aerial organs. […]
Squash & Pumpkin Reports
1993 Squash Reports
1993 Report No. 16 Squash and Pumpkin (Cucurbita spp.) Genetic parthenocarpy in Cucurbita pepo L. R.W. Robinson (USA) CGC 16:55-57 (1993) Productivity of naked seed squash, Cucurbita pepo L. Warid A. Warid, Jaime J. Martinez and Juan M. Loaiza (Mexico) CGC 16:58-60 (1993) The chromoplast ultrastructure of two isogenic lines of Cucurbita pepo fruits at different developmental stages H.T. Lim and C.D. […]
Leaf Silvering of Squash: A Brief Review
Cucurbit Genetics Cooperative Report 16:75-76 (article 27) 1993 Harry S. Paris Department of Vegetable Crops, Agricultural Research Organization, Newe Ya’ar Experiment Station, P.O. Haifa, Israel Leaf silvering is an important malady of squash and pumpkins in the Middle East, Puerto Rico, the southern United States, and possibly other regions (1, 2, 3, 9, 11, 12, […]
Powdery and Downy Mildew Resistance in Cucurbita moschata Accessions
Cucurbit Genetics Cooperative Report 16:73-74 (article 26) 1993 Linda Wessel-Beaver Dept. of Agronomy and Soils, College of Agricultural Sciences University of Puerto Rico, Mayaguez, PR 00681 Powdery mildew is a disease found wherever cucurbit crops are grown. Two organisms are reported as the causal agents of this disease: Erysiphe cichoraceatum DC ex. Merat and Sphaerotheca […]
Breeding Bush Types of C. moschata with Field Resistance to PRSV-W.
Cucurbit Genetics Cooperative Report 16:70-72 (article 25) 1993 Paulo T. Della Vecchia, Petro Terenciano S. and A,adeu Terenciano Agroflora S/A, Caixa Postal 427, 12900-000 Braganca Paulista-SP, Brazil Immature fruits of C. pepo and C. moschata are used in Brazil for raw or steamed salads. the market preference is towards C. pepo cultivars which bear slightly […]
Inheritance of Immature Fruit Color in C. Moschata
Cucurbit Genetics Cooperative Report 16:68-69 (article 24) 1993 Antonio I.I. Cardosa, Paulo T. Della Vecchia, and Norberto Silva Agroflora S/A, Caixa Postal 427, 12900-000 Braganca Paullsta – SP, Brazil; Departmento de Agricultura e Melhoramento Vegetal, FAC-Campus Botucatu-UNESP, 186-000 Botucatu – SP, Brazil Bush types of C. moschata with field resistance to Papaya Ring Spot Virus-W […]
A Case of Extremely Low Expressivity of Gene B2 in C. moschata.
Cucurbit Genetics Cooperative Report 16:64-67 (article 23) 1993 Oved Shifriss 21 Walter Avenue, Highland Park, NJ 08904 An F2 population of the cross IL-B x NJ-B, C. moschata, was grown in the fall of 1989 in Naples, Florida. According to present interpretation (1, 2), IL-B is B1 + B1 + B2B2 and NJ-B, B1B1 B2 […]
The Chromoplast Ultrastructure of Two Isogenic Lines of Cucurbita pepo fruits at Different Developmental Stages
Cucurbit Genetics Cooperative Report 16:61-63 (article 22) 1993 H.T. Lim, C.D. Boyer Department of Horticulture, Kangwon National University, Chuncheon, 200-701, The Republic of Korea; Department of Horticulture, The Pennsylvania State University, University Park, PA 16802. Introduction: Many agriculturally important processes take place in the various developmental states of plastids. Chloroplasts are extensively studied due to […]
Productivity of Naked Seed Squash, Cucurbita pepo L.
Cucurbit Genetics Cooperative Report 16:58-59 (article 21) 1993 Warid A. Warid, Jaime J. Martinex, and Juan M. Loaiza Department of Agriculture – DAG, University of Sonora, Hermosillo, Sonora, Mexico The naked-seed squash has been reported by Curtis (2, 3). The seed lacks the lignified seed coat. Whitaker (5) referred to studies on this mutatin by […]
Genetic Parthenocarpy in Cucurbita Pepo L.
Cucurbit Genetics Cooperative Report 16:55-57 (article 20) 1993 R.W. Robinson Horticultural Sciences Department, New York State Agricultural Experiment Station, Geneva, New York 14456 Fruit set of summer squash can be very poor when conditions are unfavorable for pollination. Many F1 hybrid cultivars have been bred to have a high ratio of female to male flowers […]