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To select proper varieties, several seedlings of  Carya illinoensis  (pecan) were imported from the United States about 28 years ago and were planted at the Safiabad Research Center, Iran. Because of the existence of docogamy in pecan, protandrous and protoginous cultivars were first determined. Then, qualitative and some quantitative characteristics were studied in a completely random plant test and, with regard to treatments and repetitions, the total yield of trees, weight of kernel, kernel: bark ratio, oil percentage (fat), protein percentage, and the size of fruit were examined. With regard to all circumstances and statistical results, out of 14 examined varieties, varieties 12 (`Wichita') and 1 (`Gratex') were selected on the basis of their high yields, respectively.

587 Study on Adoptability of Pecan, Carya illinoensis L., under Climatic Conditions of the Safiabad Area of Iran