Investigation of the Tolerance of Malling Merton106, Gami Almasi and their Hybrids to Fe Chlorosis

Most of Iran temperate zone fruits orchards located in calcereous region and the signs of iron deficiency observed in orchards. So the producers use most amounts of Fe fertilizers that in addition to increase of production costs change the soils nutrients balance. In order to investigation the tolerance of Gami almasi and MM 106 rootstocks and hybrids between them to the induced chlorosis by the bicarbonate and iron deficiency, the studied materials were planted in pots containing the 10 kg of non calcareus soils that were treated with 500 mg/kg bicarbonate from the potassium bicarbonate source and the control ones did not received the bicarbonate.In the end of growth period parameters like the chlorophyll index, Chlorophyll florescence,Total nitrogen, Phosphorous, Potassium, Iron, Manganese, Magnesium, Zinc. And Calcium in roots and aerial parts were measured. The parametrs of chlorophyll index, Chlorophyll florescence Fv/Fm, Total Nitrogen, Manganese and Zinc in leaf and also Phosphorous and Magnesium in roots were significantly affected by soil condtion and cultivars. The cultivar affected the total Chlorophyll, Nitrogene, Phosphorous, Potasium, total Iron and Calsium of leaf and also affected the Zinc, Calsium, Manganese, Potasium and Iron in roots. The Gami almasi landrace in comparison with other root stocks had the highest of total Chlorophyll, total Nitrogen, Phosphorous, Calcium, Potassium and total iron of leaves. The Gami almasi in bicarbonated soil and also in without lime substrate had the highest chlorophyll index, Fv/Fm, Manganese and Zinc in relation to other stocks.