Correlation Analysis on Economic Traits and Quality Traits of Spring Rapeseed(Brassica campestris L.) in Tibet

【Objective】 The correlation between economic traits and quality traits of spring rapeseed(Brassica campestris L.) was studied, and the main indicators for determining the yield and oil content of spring rapeseed were selected. 【Method】 Taking 41 spring rapes arranged by Tibet Academy of Agriculture and Animal Husbandry Sciences as materials, the economic traits such as plant height, branch position, number of branches, length of main sequence, main sequence pod, pod density, number of pods per plant, pod length, per-fruit seed number, yield per plant, and 1000-grain weight were detected. The oil content, erucic acid and glucosinolate contents of rapeseed were detected by near-infrared quality analyzer. Cluster analysis of 41 materials was conducted and correlation between indicators was analyzed. 【Results】 The results of correlation analysis showed that the number of branches, the number of pods per plant, the pods of main inflorescence, the length of pods and the yield of rape were significantly or highly significantly correlated, and the correlation between other economic indicators and yield was not significant. Oil content was negatively correlated with erucic acid content, but with no significant correlation.【Conclusion】The number of branches, the number of pods per plant, the pods of main inflorescence, and the length of pods can be used as the main indicators for the evaluation of spring rapeseed yield, and other economic indicators as secondary indicators. Erucic acid can be used as a reference for the evaluation of oil content.