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[目的]研究不同叶面积苜蓿品种的抗旱性及其二者的关系。[方法]通过紫花苜蓿在干旱条件下不同品种叶面积脯氨酸含量的差异性,探索紫花苜蓿抗旱性与叶面积大小的关联性。[结果]该研究结果表明,在旱作条件下,不同苜蓿品种的抗旱性与其叶面积大小有直接关系,叶面积越大的苜蓿品种脯氨酸含量越高,其抗旱性越强。[结论]叶片面积可以作为衡量不同苜蓿品种抗旱性强弱的一个较为直观的辅助性指标。
[Objective] The research aimed to study the drought resistance of alfalfa cultivars with different leaf area and their relationship. [Method] The correlation between drought resistance and leaf area size of Medicago sativa was explored through the difference of proline content of different cultivars under different drought conditions. [Result] The results showed that the drought resistance of different alfalfa cultivars was directly related to the leaf area under the conditions of dry cultivation. The higher the proline content of alfalfa cultivars, the stronger the drought resistance. [Conclusion] The leaf area could be used as a more direct auxiliary index to measure the drought resistance of different alfalfa cultivars.