通过低温胁迫后辣椒的发芽率、发芽势分析供试材料的抗寒性，利用已构建的抗寒方程筛选耐低温辣椒种质资源，并以越冬栽培模式下的坐果率来验证。结果表明，抗寒方程计算结果与坐果率调查结果重合率达75%；根据抗寒方程计算，Y≥80时为耐寒材料。该方法可适用于快速、大量的筛选耐低温辣椒种质资源。

The germination rate and germination potential of capsicum under low temperature stress were analyzed，and the germplasm resources of capsicum resistant to low temperature were screened by using the established cold resistance equation. The results showed that the coincidence rate between the calculated results of the cold equation and the fruit setting rate is 75%. According to the calculation of the cold-resistance equation，the cold resistant material is when Y≥80. The method can be used to rapidly and extensively screen the germplasm resources of low temperature resistant pepper.

S641.3

“十三五”国家重点研发计划项目(2017YFD0101903)；甘肃省农业科学院院列项目(2016 GAAS28)；甘肃省科技重大专项计划(17ZD2NA015)。