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。
Identification and assessment on drought-resistance of Hordeum vulgare L .at seedling stage
With the method of drought stress and water recovery simulated in greenhouse ,8 drought resistant indica-tors ,including leaf relative water content (RWC) ,relative electrical conductivity (REC) ,chlorophyll content (Chl) , malondialdehyde content (MDA) ,soluble sugar content (SSC) ,free proline 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 eval-uate the drought resistance of different germplasms .The results showed that the RWC was significantly and positively cor-related 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 ,SCAR-LETT ,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 Heiyin-rui ,Z200V017W ,Xinpi 12 ,BEATRIX and Z204V021W .
Hordeum vulgare L .seedling stagedrought resistanceidentification
国家科技期刊平台
NSTL
万方数据
维普
