Cucurbit Genetics Cooperative Report 21:63-64 (article 23) 1998 Humberto Rios Labrada Instituto Nacional de Ciencias Agricolas (INCA). GP no1 San Jose de las Lajas, La Habana, Cuba CP 32700 Introduction. Environment plays an important role in cucurbit production. In Cuba, prior to the current economic crisis, pumpkin (Cucurbita moschata) yields were highest with winter sowings […]
Squash & Pumpkin Reports
Effectiveness of the Informal Seed Sector for Increasing Yield in Pumpkins Developed under Low Input Conditions
Cucurbit Genetics Cooperative Report 21:62-62 (article 22) 1998 Humberto Rios Labrada, Yunaima Perera Ibarra y Antonio Fernandez Almirall Instituto Nacional de Ciencias Agricolas (INCA). GP no1 San Jose de las Lajas, La Habana, Cuba cp 32700 Introduction. The “informal seed sector” describes the ability of farmers – rather than breeders – to maintain, develop, enhance, […]
Seed Development and Seed Fill in Hull-less Seeded Cultigens of Cucurbita pepo L.
Cucurbit Genetics Cooperative Report 21:59-61 (article 21) 1998 Kelly Vining and Brent Loy Department of Plant Biology, University of New Hampshire, Durham, NH 03824 Introduction. A breeding program to develop hull-less seeded cultivars of pumpkin has been ongoing at the University of New Hampshire since the early 1980s (3). The initial goal of the program […]
Seed Fill Occurs in Stored Fruit of Cucurbita pepo L. Harvested Prematurely
Cucurbit Genetics Cooperative Report 21:57-58 (article 20) 1998 Kelly Vining and Brent Loy Department of Plant Biology, University of New Hampshire, Durham, NH 03824 Introduction. Pumpkin plants (Cucurbita pepo L.) often senesce prematurely in the fall because of disease pressures or low temperatures. Seeds from fruit of such plans are not well-filled, and it is […]
Adventitious Flower and Shoot Formation by Various Cucurbits In Vitro
Cucurbit Genetics Cooperative Report 21:54-56 (article 19) 1998 P.N. Hoffman and R.M. Skirvin Department of Natural Resources and Environmental Sciences, 258 ERML, 1201 N. Gregory, Urbana, IL 16801, U.S.A. M. Ozgur Department of Horticulture, University of Uludag, P.O. Box 44, 10636 Hurriyet, Bursa, Turkey Introduction. Growth and early flowering are important aspects of crop breeding. […]
Some Observations Concerning Diversity in the Subspecies and Horticultural Groups of Cucurbita pepo
Cucurbit Genetics Cooperative Report 21:51-53 (article 18) 1998 Harry S. Paris Department of Vegetable Crops, Agricultural Research Organization, Newe Ya’ar Research Center, P.O. Box 1021, Ramat Yishay 30-095, Israel Cucurbita pepo is a highly polymorphic species. On the basis of seed morphology and allozyme variation, this species has been divided into two subspecies, pepo and […]
Genetic Diversity in Pumpkins (Cucurbita pepo L.) as Revealed in Inbred Lines Using RAPD Markers
Cucurbit Genetics Cooperative Report 21:48-50 (article 17) 1998 Maria Stachel, Gyula Csanadi, Johann Vollmann and Tamas Lelley Department of Plant Biotechnology, Institute of Agrobiotechnology Tulln, Konrad Lorenz Str. 20, A-3430 Tulln, Austria Introduction. Pumpkin is grown in austria on approximately 8000 ha. The specific hull-less form cucurbita pepo var. styriaca (2n=2x=40) has facilitated easy seed-oil […]
A Simple Protocol for Isolating DNA from Fresh Cucurbita Leaves
Cucurbit Genetics Cooperative Report 21:46-47 (article 16) 1998 Rebecca Nelson Brown and James E. Myers Department of Horticulture, Oregon State University, Corvallis, OR 97331 Mark Hutton and Paul Miller Sunseeds, 8850 59th Ave. NE, Brooks, OR 97305-0982 Introduction. Many DNA isolation protocols have been published, and there are many kits available from scientific suppliers. However, […]
Heterosis in Summer Squash (Cucurbita pepo L.)
Cucurbit Genetics Cooperative Report 21:43-45 (article 15) 1998 I.T. Firpo, F. Lopez Anido, S.M. Garcia, and E. Cointry Fac. de Cs. Agrarias, Universidad Nacional de Rosario, CC 14, Zavalla 2123, Argentina Introduction. Cultivated cucurbita species have not followed the general pattern of inbreeding and heterosis of other cross-pollinated crops like maize and onions (9). In […]
Combining Ability in Summer Squash (Cucurbita pepo L.)
Cucurbit Genetics Cooperative Report 21:40-42 (article14) 1998 F. Lopez Anido¹, I.T. Firpo², S.M. Garcia², and E. Cointry¹ Catedras de Genetica¹ y Horticultura², Fac. de Cs. Agrarias, Universidad Nacional de Rosario, CC 14, Zavalla 2123, Argentina Introduction. Diallel analyses ave been used extensively in plant species for genetic interpretation, which requires certain assumptions, and in a […]