以彩色棉品种BC05、陇绿棉3号为试验材料，采用不同浓度的PEG-6000模拟干旱条件，研究彩色棉种子在萌发期对干旱胁迫的响应和抗旱性分析。结果表明，低浓度PEG-6000处理对棉花种子发芽势、发芽率影响不显著；但随着PEG-6000浓度的增加，2个彩色棉品种的种子发芽势、发芽率均呈下降趋势，种子萌发受到抑制。PEG-6000浓度为30%时，棉花种子萌发完全受到抑制。

Two colored cotton cultivars BC05 and Longlümian 3 were used as experimental materials， and PEG-6000 of different concentrations was used to simulate drought conditions. The response and drought resistance of colored cotton seeds to drought stress during germination were studied， to study the response and the analysis of drought resistance of colored cotton seeds to drought stress during the germination. The results showed that the low concentration of PEG-6000 had no significant effect on the germination potential and germination rate of cotton seeds； But with the increase of PEG-6000 concentration， the germination potential， germination rate were all showed a downward trend germination of seeds was inhibited. When PEG-6000 concentration was 30%， the germination of cottoned seeds was completely inhibited.

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甘肃省农业科学院中青年基金项目(2019GAAS43)；甘肃省农业科学院中青年基金项目(2017GAAS94)。