Study on Aluminum tolerance of different genotypes of Chamaecrista

Ten different genotypes of Chamaecrista were cultivated in 90 mg/L concentration of Al3+, and difference in Aluminum tolerance of genotypes was studied by measuring agronomic characteristics, elongation rates of main root, growth rates of plant height, roots conductivity, root activities and proline contents change. The resulted showed that the genotypes of 86134R2, 86134R3, 86134R1 and 2204 had strong Aluminum tolerance, the genotypes of 34721R1, 34721R2, 34721F7 and 34721F4 had medium Aluminum tolerance, the genotypes of 92985R2 and 92985R1 were sensitive.