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期 刊 ：植物遗传资源学报 2014年 15卷 4期

关键词：糜子；芽期；抗旱性；评价方法；

Keywords:Broomcorn millet, Germinating stage, Drought resistance, Evaluation methods,

摘 要 ：摘要：采用PEG-6000胁迫处理对国内不同地区育成的56个糜子品种的芽期抗旱性进行了鉴定，并用直接评价和综合评价法对其抗旱性进行了评价。结果表明：经20%（w/v）PEG-6000处理的56个品种与对照相比性状之间差异显著，品种抗旱性存在较大差异。用直接评价法和综合评价法相结合鉴定出强抗旱性品种3份，分别是晋黍2号、陇糜5号和陇糜8号。相对发芽率、相对芽干重、相对根干重、贮藏物质相对转运率4项指标可作为糜子芽期抗旱性鉴定评价指标，相对发芽率法和加权隶属函数值法是比较理想的糜子芽期抗旱性评价方法。

Abstract:Abstract：Drought resistance at germinating stage of 56 Broomcorn Millet selective bred varieties from different province were identified using PEG-6000 treated, and drought resistance also were evaluated by direct and comprehensive assessment methods. The result showed that 56 varieties existed great differences in investigated traits and drought resistance between 20%(w/v) PEG-6000 treatment and CK. By two kinds of methods , three varieties with strong drought resistance have screened，namely Jinshu No.2, Longmi No.5, Longmi No.8. The result also showed that relative germination rate，relative shoot dry weight, relative root dry weight and storage matter relative transfer rate can be used as the main drought resistance identification indexes of broomcorn millet at germinating stage；Relative germination rate and weighted subordinate function value method are an ideal method of drought resistance evaluation at broomcorn millet germinating stage.

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