摘要： 在人工模拟水分胁迫情况下, 对抗旱性不同的3个绿豆突变体即172-3(高抗)、159-1(中抗)、145-1(弱抗)和原材料中绿2号(不抗)在不同生育期不同程度水分胁迫下的抗旱生理响应进行了研究, 旨在探明其不同的抗性机理。研究发现: 随着水分胁迫的加剧, 抗旱性强的突变体叶绿素含量减小幅度小, SOD活性、POD活性和NR活性明显高于抗性低的品种, 表明水分胁迫对这些生理特性的影响程度与绿豆的抗旱性有关。

关键词: 抗旱性, 绿豆突变体, 水分胁迫, 生理响应

Abstract: The drought resistance physiological responses of three mung bean mutants 172-3(high resistance), 159-1(moderate resistance), 145-1(low resistance) and their parent cultivars Zhonglv No.2(drought sensitive) were studied in the distinct growing stage and under varying water stress. The purpose was to ascertain the mechanism of drought resistance. The results were as follows: With the increasing of water stress levels, compared with weak drought-resistance varieties, the high drought-resitance mung been mutant were characterized as that the content of chlorophyll decreased by a less and the activity of SOD, POD and NR is obviously higher, which indicated these physiological characters were related to the drought resistance of mung bean's.

Key words: Drought resistance, Mung bean mutants, Water stress, Physiological responses

中图分类号: 

• S522.01