通过对7个甘肃彩色棉品种在不同盐分浓度胁迫下发芽势及发芽率的测定，研究不同彩色棉品种萌发期耐盐特性。结果表明:在盐胁迫下，各供试品种的发芽势、发芽率随盐分浓度的增加而逐渐降低，4 g/kg盐分浓度为彩色棉耐盐性鉴定的标准浓度。萌发期耐盐性品种有陇绿棉4号、陇棕棉2号及陇棕棉3号，耐盐性较弱的品种为陇绿棉1号、陇绿棉2号、陇绿棉3号及陇棕棉1号。

Based on the measurement of the germination potential and germination rate of 7 Gansu colored cotton cultivar under different salt concentration， the salt-tolerant trait of different colored cotton cultivar are studied on sprouting period. The result shows that the germination potential and germination rate among all cultivar decreased with the increasing of the concentration of NaCl solution， salt concentration 4.0 g/kg is the standard concentration of salt tolerance identification of colored cotton cultivar. Salt tolerant cultivar on sprouting period are Longlvmian 4， Longzongmian 2 and Longzongmian 3， the cultivar with weak salt tolerance are Longlvmian 1， Longlvmian 2， Longlvmian 3 and Longzongmian 1.

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甘肃省农业科学院中青年基金项目“棉花苗期耐盐性分析与鉴定指标筛选研究 ”(2015GAAS35)；甘肃省农业科学院院地合作项目(2015GAAS18)；甘肃省农业科学院科技创新专项( 2016GAAS01)。