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Month: July 1985
Resistance to Acute Gamma Irradiation of Pollen of Cucumis Species
Cucurbit Genetics Cooperative Report 8:82-84 (Article 32) 1985 Nijs, A. P. M. den, C. J. M. Denissen and M. A. P. F. Hornes Institute for Horticultural Plant Breeding (IVT), P. O. Box 16, 6700 AA Wageningen, The Netherlands The technique of in vivo egg cell transformation (3) requires that following a high dose irradiation (1 […]
Use of Cucumis anguria as a vegetable in Brazil
Cucurbit Genetics Cooperative Report 8:81 (Article 31) 1985 Costa, C. D. da Departmento de Genetica – ESALQ, Universidad De Sao Paulo, Cx. P. 83 13.400 Piracicaba-SP, Brazil “Maxixe” is the common name for Cucumis anguria, used in the traditional and popular soup “maxixada” in north and northeastern Brazil. Cucumis anguria was introduced into Brazil by […]
Breeding High Female Lines Through Interspecific Hybridization of Cucurbita
Cucurbit Genetics Cooperative Report 8:78-79 (Article 30) 1985 Kwack, Soo Nyeon and Kunimitsu Fujieda University Farm, Faculty of Agriculture, Kyushu University, Kasuyamachi, Fukuoka, Japan. The genetic variation available in C. maxima appears insufficient for high femaleness in sex expression. Interspecific crosses have been shown to increase genetic variation in Cucurbita (3). Crosses of C. pepo […]
Lack of Resistance to Zucchini Yellow Mosaic Virus in Accessions of Cucurbita maxima
Cucurbit Genetics Cooperative Report 8:76-77 (Article 29) 1985 Provvidenti, R. New York State Agricultural Experiment Station, Cornell University, Geneva, NY 14456 R. Alconero USDA Northeast Regional Plant Introduction Station, Geneva, NY 14456 Zucchini yellow mosaic virus (ZYMV) is one of the most destructive pathogens infecting cucurbits, and although of recent identification (1981), it is known […]
Breeding for Resistance to Cucumber Mosaic Virus in Courgette and Vegetable Marrow
Cucurbit Genetics Cooperative Report 8:74-75 (Article 28) 1985 Pink, D. A. C. and D. G. A. Walkey National Vegetable Research Station, Wellesbourne, Warwick, CV35 9EF, UK Cucumber mosaic virus (CMV) is the only economically important virus infecting courgette and vegetable marrow (C. pepo) plants in the UK. There are no resistant cultivars available but a […]
Cucurbitacin Concentrations in Different Plant Parts of Cucurbita Species as a Function of Age.
Cucurbit Genetics Cooperative Report 8:71-73 (Article 27) 1985 Jaworski, A., P. M. Gorski*, S. Shannon, and R. W. Robinson Department of Horticultural Science, New York State Agricultural Experiment Station, Geneva, NY 14456 Cucurbitacins (Cucs) are of concern to breeders due to their relation to insect resistance and fruit bitterness. When evaluating lines for Cucs, it […]
Rapid TLC and HPLC Test for Cucurbitacins
Cucurbit Genetics Cooperative Report 8:69-70 (Article 26) 1985 Gorski, P. M.*, A. Jaworski, S. Shannon and R. W. Robinson Department of Horticultural Science, New York State Agricultural Experiment Station, Geneva, NY 14456 Recently, there have been reports (2,4) of serious illness and litigation due to a low incidence of a gene for bitter fruit in […]
Differential Sensitivity of Cucurbita pepo Cultivars to Ethephon
Cucurbit Genetics Cooperative Report 8:67-68 (Article 25) 1985 Edelstein, Menahem, Harry S. Paris, Haim Nerson, Zvi Karchi, and Yosef Burger Department of Vegetable Crops, Agricultural Research Organization, Newe Ya’ar Experiment Station, P. O. Haifa, Israel Initial reports of the effects of ethephon on both squash and cucumber were concerned with the ease with which relatively […]
Obtention of Embryos and Plants from In Vitro Culture of Unfertilized Ovules of Cucurbita pepo
Cucurbit Genetics Cooperative Report 8:66 (Article 24) 1985 Chambonnet, D. and R. Dumas de Vaulx Institut National de la Recherche Agronomique, 84140 Montfavet, France Unfertilized ovules of Cucurbita pepo have been in vitro cultured to obtain haploid plants from the embryo-sac cells. In our first experiments we obtained embryos coming from the internal part of […]