عنوان مقاله [English]
نویسندگان [English]چکیده [English]
Genetic variation is an essential factor for the crop breeding. Induced mutations are highly effective to enhance the natural genetic resources, and have assisted in developing the improved cultivars of fruits and other crops. The recent advances in biotechnological techniques have the potential to provide efficient methods of vegetative propagation, screening techniques and genetic improvement through the mutation. On this basis, we selected tangerine (Celemantin cv) as a well-adapted, and highly consumed citrus fruit which has a disadvantage of containing too many seeds in it's flash. We applied physical mutagen (γ-ray) with dose rates of (35,40 and 45 Gy) for lateral bud after shoot tip grafting (stg) and production of contaminated-free plants. The irradiated buds were grafted to sour orange as root stocks (M1V1) and chimera dissolved by further vegetative propagation. Finally, the M1V3 plants were transferred to the field and after the production of the fruits, selection has been made. The results have showed that radiation was able to produce seedless, early and late ripening and cold resistance samples. Tangerine (Clemantine Cv) has also shown that it possesses a high yield of production.