A Study on Vegetative and Reproductive Traits in some Pistachio Genotypes (Pistacia vera L. and P. mutica)

Growth indices of pistachio seedlings were studied in three pot experiments. The pot experiments were carried out in the form of RCBD. In the first and second experiments, growth indices of seedlings of seven cultivars of Pistacia vera, and P. mutica, and in the third experiment growth indices of seedlings of three P. vera cultivars were determined. In orchard experiment, growth of four cultivars of P. vera and also their reproductive traits were evaluated during 1990-1999 . For statistical analysis of data, the unbalanced CRD was used. In another orchard experiment, the reproductive traits of cultivars Badami- sefid and Owhadi were determined during 1998-2002. This experiment was done in the form of RCBD. In the third pot experiment, as the source of seeds was changed, the results were different, considerably. The growth variations in seedings of wild pistachios (Sarakhs and Baneh) was minimum.The seedlings of domesticated cultivars especially Owhadi and Kale-ghoochi and also semi-wild cv. badami-riz were more vigorous than wild cultivars of Sarakhs and Baneh. Considerable differences in growth indices of cv. Akbari compared to other cultivars, indicated presence of probably more different genes in this cultivar. In the first orchard experiment, quantitative yield of cv. Owhadi was considerable whereas in the second orchard experiment quantitative yield of cv. Badami-sefid was significantly higher than cv. Owhadi. In pot experiments, genetical diversity in seedlings of a definite cv. and among cvs. caused to change growth indices differently. In regard to vegetative and reproductive traits, there was a considerable genetical diversity among cvs. as well as different sources of a given cv. (grafts). For establishment of new pistachio orchards, these genetical diversities should be considered