Rice genotype tolerance to iron in nutrient solution

Abstract

The objective of this study was to identify iron concentration and the plant most important character to study rice genotypes tolerance to iron toxicity. A hydroponic culture experiment was carried out to evaluate 20 rice genotypes and 10, 20, 40 and 80 mg L^-1 of iron concentration. Growth characters evaluated were: root length, root, canopy and total dry matter, and plant height. The seedlings were grown for 10 days in nutrient solution and 20 mg L^-1 of Fe was found to be ideal for such study. Total plant dry matter was the most adequate parameter for such study due to its higher relative contribution in genetic variation of the genotypes evaluated.