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The potato (Solanum tuberosum L.) is the worlds most important root and tuber crop worldwide. It is grown in more than 125 countries and consumed almost daily by more than a billion people.Hundreds of millions of people in developing countries depend on potatoes for their survival. Potato cultivation is expanding strongly in the developing world, where the potatoes easy cultivated and it nutritive content have made it a valuable food security and cash crop for millions of farmers.

Cucumis melo, L. is considered as a subtropical fruit, belongs to the family of Cucurbitaceae .Melon is one of the important vegetable crops in Egypt and in the world. Fresh ripe fruit is consumed individually or in fruit salad as a dessert. In the recent decades, there is an increase in the cultivated areas of melon followed by the rate of exportation, it was 53036 fed in 1999, 60941 fed in 2001 and become 100167 fed in 2007.The aim of this investigation was to increase the homogeneity of the two studied local melon cultivars, by selfing and selecting the best genotypes for two successive...