Cucurbit Genetics Cooperative Report 16:81-83 (article 31) 1993 Caiping Ma, X.P. Zhang, B.B. Rhodes and J.W. Adelberg Horticulture Dept., Box 340375, Clemson University, Clemson, SC 29634 Protoplast culture and subsequent regeneration could lead to more rapid genetic progress with watermelon. Experiments were conducted to define conditions for protoplast culture of cotyledons. Effects of Mannitol, Cellulase […]
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Fertility Shift in an In Vitro Regenerated Male-sterile Line in Watermelon
Cucurbit Genetics Cooperative Report 16:80 (article 30) 1993 Xingping Zhang and Bill Rhodes Department of Horticulture, Box 340375, Clemson University, Clemson, SC 29634-0375 Regeneration of a male-sterile line was begun in November of 1991. Cotyledons from 20-day old fruit (ms ms x Ms ms) were inoculated on 10 μ M BA regeneration medium (Adelberg and […]
Male Sterile, ms, in Watermelon not Linked to Delayed Green, dg and I-dg
Cucurbit Genetics Cooperative Report 16:79 (article 29) 1993 Xingping Zhang and Bill Rhodes Department of Horticulture, Clemson University, Clemson, SC 29634-0375 The genetic male-sterile ms, from China (1) has been reported to be unlinked to gms (1) and Sp (2). Data are reported here on its relationship to the two genes that determine delayed green […]
Inheritance of Resistance to Races 0, 1, and 2 of Fusarium oxysporum f. sp. niveum in Watermelon (Citrullus sp. PI 296341)
Cucurbit Genetics Cooperative Report 16:77-78 (article 28) 1993 Xingping Zhang and Bill Rhodes Horticulture Department, Clemson University, Clemson, SC 29634-0375 Martyn and Netzer (1) reported Citrullus sp. PI 296341-FR to be 100% resistant to races 0 and 1 of Fusarium oxysporum f. sp. niveum but segregating for resistance to race 2. We report here inheritance […]
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 […]