摘要:为了了解20份大麦(Hordeum vulgare L.)种质材料抗旱性差异，采用温室模拟干旱胁迫-复水法，对其苗期的相对含水量、相对电导率、叶绿素含量、丙二醛含量、超氧化物歧化酶和株高等8个抗旱指标进行测定，利用相关分析、聚类分析研究了各项指标与种质材料抗旱性关系，综合评价其抗旱性。结果显示：叶片相对含水量与株高呈显著正相关，其余各指标间没有显著的相关性；以采用欧式距离法综合分析结果为依据，可将20份种质材料划分为3个抗旱等级，相对抗旱包括陇麦1号、新引D5、Z126V004W、新引D9、PREJTGE、SCARLETT、Z02751407、韭崎12号、Z127U016V、MAURITIA，中等抗旱包括 J13-80、新引D7、PASADENA、NCF-TIPPLE、甘啤6号，相对敏感包括黑引瑞、Z200V017W、新啤12号、BEATRIX、Z204V021W。

关键词:大麦  苗期  抗旱  鉴定

AbstractWith the method of drought stress and water recovery simulated in greenhouse, 8 drought resistant indicators, including leaf relative water content (RWC), relative electrical conductivity (REC), chlorophyll content (Chl), malondialdehyde content (MDA), soluble sugar content (SSC), free pro line accumulation (Pro), superoxide dismutase activity (SOD) and plant height (PH) were measured for 20 germplasms of Hordeum vulgare L., and the relationship between these indicators and drought resistance was determined by correlation analysis and cluster analysis, so as to evaluate the drought resistance of different germplasms. The results showed that the RWC was significantly and positive ly correlated with the plant height, and the tested germplasms of Hordeum vulgare L. could be classified into three groups: in the high drought-resistance group, there were Longmai 1, Xinyin D5, Z126V004W, Xinyin D9, PREJTGE, SCARLETT, Z02751407, Jiuqi 12, Z127U016V and MAURITIA; in the medium drought-resistance group, there were J13-80, Xinyin D7, PASADENA, NCF-TIPPLE and Ganpi 6; and in the low drought-resistance group, there were Heiyinrui, Z200V017W, Xinpi 12, BEATRIX and Z204V021W.

Key wordsHordeum vulgare L.  seedling stage  drought resistance  identification

文章编号： 0258_7106 (2016) 01_0018_15 中图分类号： P618.41 文献标志码：A

改回日期：2015_07_11

基金项目

**通讯作者耿新霞， 女， 1979年生， 助理研究员， 成矿规律研究方向。 Email： gen gxinxia@cags.ac.cn