The salt tolerance of 6 alfalfa varieties was studied by measuring the free proline content and SOD activity under the treatments with the different salt stress.

• 摘要研究了在不同浓度的盐胁迫下6种紫花苜蓿的游离脯氨酸含量和超氧化物歧化酶(SOD)活性的变化规律。