مطالعه اثر شوری ناشی از املاح مختلف بر جذب آنها توسط نیشکر در شرایط کشت درون شیشه ای

Accumulation of soluble salts in the soil and consequently salinity appearance are major problems for agriculture land usage in arid and semi-arid areas same Khuzestan province that include vast fields of sugarcane. In order to study some basic differences in ion uptake and transport in terms of salinity caused by various solutes between the commercial varieties of sugarcane (CP48-103) and that’s salt tolerant somaclonal an experiment carried out in vitro culture in 2009 in College of Agriculture, University of Chamran, Iran. The study was a factorial design with four replications using different combinations of NaCl, KCL and CaCl2 (each at three levels, and to achieve a degree of electrical conductivity (EC) mixing ratio to 132 mM). Results showed that different amounts of ionic elements on its uptake by sugarcane have been effective and there is a selection of roots to absorb them. In the presence of NaCl absorption of sodium and calcium increased in both genotypes but potassium uptake decreased in original variety and unchanged in its somaclonal variant. In presence of KCL the potassium uptake in both genotypes also rose sharply, which could be attributed to the presence of strong potassium carriers in sugarcane roots. In presence of CaCl2 uptake of sodium and potassium was decreased in both genotypes so it was likelihood that large amounts of calcium in the root rhizosphere impaired absorption of potassium and there was a competition incompatibility between the sodium and calcium.