Summary
Forty one half-sib families of summer squash (Cucurbita pepo L.) landraces collected from Jordan were evaluated for 17 morphological and horticultural traits at the Agricultural Experimental Station in the Jordan Valley. A large diversity both within and among families was observed for many traits including plant growth, flowering and sex expression, colour of photosynthetic organs, fruit shape and fruit number per plant. Correlation coefficients were significant among many useful traits. The possible utilization of germplasm collections is discussed.
This is a preview of subscription content, log in via an institution to check access.
Similar content being viewed by others
References
Alcazar, J.T. & P.J. Gulick, 1983. Genetic resources ofCucurbitaceae, a global report, IBPGR Secretariat, Rome.
Burger, Y.A. Schwartz & H.S. Paris, 1988. Physiological and anatomical features of the silvering disorder ofCucubia. J. Hort. Sci. 63:635–640.
Chang, T.T., 1985. Principles of genetic conservation. Iowa State Journal of Research 59:325–348.
Davis, R.E. & O. Shifriss, 1983. Natural virus infection in silvery and non-silvery lines ofCucurbita pepo L. Plant Disease 67:379–380.
Denna, D.W. & H.M. Munger, 1963. Morphology of the bush and vine habits and the allelism of the bush genes inCucurbita maxima andC. pepo squash. Proc. Amer. Soc. Hort. Sci. 82:370–377.
Frankel, O.H., 1977. Natural variation and its conservation. In: A. Muhammed, R. Askel & R.C. Von Borstel (Eds), Genetic diversity in plants. p. 21–44. Plenum, New York.
Frankel, O.H. & M. Soule, 1981. Conservation and evolution. Cambridge: Cambridge University Press.
Hawkes, J.G., 1979. Germplasm collection, preservation, and use. pp. 57–83. In: K.J. Frey (Ed.) Plant breeding II The Iowa State University Press Ames.
Hoelmer, K.A., L.S. Osborne & R. Yokome, 1990. Association of the sweetpotato whitefly with squash silverleaf. In: R. Yokomi, K.R. Nara Yanan & D.J. Schuster (Eds.), Whitefly-mediated vegetable disorders in Florida, Lumoprint, Miami.
Nitsch, J.P., E.B. Kurtz, Jr., J.L. Liverman & F.W. Went, 1952. The development of sex expression in cucurbit flowers. Amer. J. Bot. 39:32–43.
Om, YH., D.G. Oh & K.H. Hong, 1988. Inheritance of bush habit inCucurbita pepo L. Cucurbits Genetic Coop. 11:70.
Paris, H.S., 1989. Description and interactions of the genes affecting fruit colour inCucurbita pepo. Cucurbits Genetics Coop. 12:72.
Paris, H.S., H. Nerson & Y. Burger, 1987. Leaf silvering ofCucurbita. Can. J. Plant Sci., 67:593–598.
Paris, H.S., P.J. Stoffella & C.A. Powell, 1993. Sweet potato whitefly, drout stress and leaf silvering of squash. Hort. Sci. 28:157–158.
Robinson, R.W., H.M. Munger, T.W. Whitaker & G.W. Bohn, 1976. Genes of theCucurbitaceae. Hon. Sci. 11:554–568.
Scarchuk, J., 1954. Fruit and leaf characters in summer squash. J. Hered. 45:295–297.
Schuster, D.J., J.B. Kring & J.F. Price, 1991. Association of the sweet potato whitefly with a silver leaf disorder of squash. Hort. Sci. 26:155–156.
Shannon, S. & R. W. Robinson, 1978. Genetic differences in summer squash (Cucurbita pepo L.). Cucurbits Genetic Coop. 1:3.
Shannon, S. & R.W. Robinson, 1979. The use of ethephon to regulate sex expression of summer squash for hybrid seed production. J. Amer. Soc. Hort. Sci. 104:674–677.
Shifriss, O., 1981. DoCucurbita plants with silvery leaves escape virus infection? Origin and characteristics of NJ 260. Cucurbit Genetics Coop. 4:42–43.
Shifriss, O., 1982. On the silvery-leaf traits inCucurbita pepo L. Cucurbit Genetics Coop. 5:48–50.
Simons, J.N., P.J. Stofella, K.D. Schuler & R.N. Raid, 1988. Silver leaf of squash in south Florida. Proc. Fla. State. Hort. Soc. 101:397–399.
Yokomi, R.K., K.A. Hoelmer & L.S. Osborne, 1990. Relationship between the sweet potato whitefly and the squash silver leaf disorder. Phytopath. 80:895–900.
Author information
Authors and Affiliations
Rights and permissions
About this article
Cite this article
Kasrawi, M.A. Diversity in landraces of summer squash from Jordan. Genet Resour Crop Evol 42, 223–230 (1995). https://doi.org/10.1007/BF02431256
Received:
Accepted:
Issue Date:
DOI: https://doi.org/10.1007/BF02431256