Combining ability for some characters in summer squash (Cucurbita pepa L.) [electronic resource].

Includes references.

These experiments were carried out at El-Baramon Horticulture Res. Station of Horti.Res. Institute, during the two successive summer seasons of 2008 and 2009. Five inbred line selected from Eskandrani cultivars differing in some economicai traits ,i.e., number of internodes to the first female flower ,early yield fruit weight and number ),total yield fruit weight and number .plant vigor and leaf area ,were chosen as original plant materials in this study. In summer season 2008 , the five parents were crossed In the field and their all possible crosses ,without reciprocal, to obtain the experimental materials .The F, crosses and their parental lines were planted in the field experiment in the second season 2009 .The objective of this stUdy was to determine the different types of gene effect in terms of general and specific combining abilities (GCA and SCA )regarding some characters viz ,number of internodes to the first female flower ,early yield as fruit number and weight total yield as fruit number and weight per plant and leaf area .This knowledge about the sort of genetics would be helpful to the plant breeder for planning a successful breeding program.

Summary in Arabic.

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