Evaluation of Aluminum Tolerance in Rice

Abstract The objectives of the present work were to adjust the method for identifying genetic variability in rice through the use of minimal solution in hydroponic culture, and to identify the most important level and character for the study. The experiment consisted of the response evaluation of 18 rice genotypes to three levels of aluminum treatment. Five variables obtained from root and shoot lengths were evaluated. The data were subjected to the clustering methods of Tocher and nearest neighbor to evaluate the dissimilarity and the most adequate aluminum level. The results indicated that the 2 mg L−1 concentration and the difference between first and second measures of root length were the most useful for evaluating Al tolerance. Based on the results, it was possible to identify tolerant and sensitive cultivars to aluminum.