以超强抗寒性白菜型冬油菜品种陇油6号与强抗寒性品种陇油9号杂交的F2代材料为研究对象，进行抗寒性相关指标的分析和越冬率的调查。结果表明，除SOD活性外，其余各指标在F2群体中呈连续变异，分布频率大致接近正态分布；相关分析表明，SOD、POD、CAT活性与越冬率呈正相关，可溶性蛋白含量与越冬率呈显著正相关，APX活性与越冬率呈极显著正相关。聚类分析将F2群体分为 2个类群。

In this study， the super cold resistance variety Longyou 6 with strong cold resistance variety Longyou 9 hybridization F2 generation materials are selected as materials， studied the analysis of cold resistance index and the survey of winter survival rate. The result shows that in addition to the activity of superoxide dismutase(SOD) and the rest of the index in the F2 population is continuous variation， the frequency distribution is approximately normal distribution; the correlation analysis shows that SOD， POD， CAT activity and overwintering rate is positively correlated， soluble protein content and overwintering rate is significant positive relationship， APX activity and winter survival rate is very significant positive correlation. Then with the methods of factor analysis， the F2 populations are divided into two groups.

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甘肃省青年科技基金计划(145RJYA253)；甘肃省农业生物技术研究与应用开发项目(GNSW-2012-04)部分内容