بررسي تاثير شرايط محيطي، روش و زمان انجام پيوند بر گيرايي پيوند جوانه گردو (Juglans regia)

The Effects of Environmental Conditions, Method and Time on the Success of Budding in Walnut

he effects of different budding methods (patch, chip and shield), budding time (June and Fall) and budding conditions (greenhouse vs. field), percent taking of the buds callus formation and scion growth were studied in walnu* (Juglans regia L.). According to the results, patch budding method had the highest percent of success in all conditions and at all times with 91% in June under greenhouse conditions. The least success in taking of buds was observed with chip and shield budding methods showing no success (0%) in fall budding and under field conditions. However, June budding under controlled conditions increased the shield and chip budding percent of success up to 31 and 19%, respectively. With some exceptions, the same results were also obtained with callus formation and scion growth, i.e. the highest values for these two attributes were observed in patch budding. However, callus formation did not vary between greenhouse and field conditions. Scion growth was observed to be the highest (10.2 cm length) in fall budding and under greenhouse conditions.