REFERENCES:
Abd El-Hadi A., A. El-Adl, M. Hamada and M. Abdin. (2005): Manifestation of heterosis and genetic parameters associated with it for some vegetative and earliness traits in squash. J. Agric. Sci. Mansoura Univ. 30(3): 1363-1379.
Brewbaker, J.L. (1964): Agricultural genetics. Prentice-Hall, Inc., Englewood Cliffs, N.J.
Damarany, A.M., H.M. Aboul-Nasr and M.M.A. Abdalla. (1995): Yield and yield components of some Cucurbita spp. Cultivars and hybrids under Assiut conditions. I. summer squash (Cucurbita pepo L.). Assiut J. Agric. Sci. 26:51-57.
El-Tahawy, M. (2007): Genetical studies on the most important economical charact-eristics of some squash cultivars in Egypt. M. Sc. Thesis, Faculty of Agric., Suez Canal Univ.
Falconer, D. S. (1981): Introduction to quantitative genetics. 2nd ed. Longman House, Burnt Mill, Harlow England.
George, R.A.T. (1985): Vegetable seed production. Longman Inc. New York.
Gomez, K.A. and A.A. Gomez. (1984): Statistical procedures for agricultural research. 2nd ed. John Wiley & Sons, New York.
Hassan, A.A. (1988): Cucurbits. Arabic House for Publishing and Distribution, Cairo, Egypt (in Arabic).
Hassan, A.A. (1991): Fundamentals of plant breeding. Arabic House for Publishing and Distribution, Cairo, Egypt (in Arabic).
Hassan, A.A. (1994): Production, physiology and certification of vegetable seeds. Arabic House for Publishing and Distribution, Cairo, Egypt (in Arabic).
Metwally, E. R. Khalil and B. El-Sawy (1988): Genetic analysis of seed yield and related traits in summer squash (Cucurbita pepo L.). Minufyia J. Agric. Res. 13(1) : 431-442.
Mohamed, M.F. (1996): Phenotypic variability and selection for predominant pistillate flower expression in zucchini-type summer squash (Cucurbita pepo L.) 'Eskandrani'. First Egyptian-Hungarian Horticultural Conference, Sept. 1996. Vol. 2, p.154-162, Kafr El-sheikh, Tanta Univ., Egypt.
Mohamed, M.F., E.F.S. Refaei and G.I. Shalaby. (2003): Growth and yield of inbred zucchini squash (Cucurbita pepo L.) lines developed under adverse climatic conditions. Assiut Univ. Bull. Environ. Res. 6(1):109-114.
NeSmith, D.S., G. Hoogenboom and D.W. Groff. (1994): Staminate and pistillate flower production of summer squash in response to planting date. HortScience 29:256-257.
Refai, E.F.S. (2001): Breeding and tissue culture studies in summer squash (Cucurbita pepo L.). Ph.D. Dissertation, Assiut University
Robinson, R. (1999): Rational and methods for producing hybrid cucurbit seed. J. New Seeds.1(3/4): 1-47.
Shifriss, O. (1985): Origin of gynoecism in squash. HortScience 20:889-891.
Steel, R.G.D. and J.H. Torrie. (1980): Principles and procedures of statistics: A biometrical approach. 2nd ed. McGraw-Hill, Inc. USA
Waly, E. A. and A. Nasar. (1978): Genetical investigation in squash (Cucurbita pepo L.): Studies on leaf, flower and fruit characters. Assiut J. Agric. Sci. 9:19:37.