Journal of Northern Agriculture ›› 2023, Vol. 51 ›› Issue (4): 88-95.doi: 10.12190/j.issn.2096-1197.2023.04.11

• Horticulture · Agrotechny • Previous Articles     Next Articles

Application comparison of DTOPSIS method and gray correlation analysis method in comprehensive evaluation of new spring rapeseed varieties

JIANG Lixia, REN Junrong, ZHANG Zhi, MIAO Pinggui, WANG Jinghong, YANG Jianli   

  1. Hybrid Rapeseed Research Center of Shaanxi Province,Yangling 712100,China
  • Received:2023-05-11 Online:2023-08-20 Published:2023-11-07

Abstract:

【Objective】Compare the application of DTOPSIS method and grey correlation analysis method in comprehensive evaluation of new spring rapeseed varieties,to provide references for the breeding of new spring rapeseed varieties.【Methods】Using the entropy weight DTOPSIS method and grey correlation analysis method,comprehensive evaluation was conducted on 11 traits of 9 varieties in the 2021 Shaanxi Province spring rapeseed regional trial. The advantages and disadvantages of the two methods in evaluation ability were compared and analyzed.【Results】The use of entropy weight avoided the subjectivity of evaluation results. DTOPSIS method and gray correlation analysis method comprehensively evaluated multiple traits of rapeseed,avoided the unicity of evaluation criteria.When each trait index was given the same entropy weight,the sorting results of DTOPSIS method and gray correlation analysis method were basically the same,but the biggest difference of Ci value in DTOPSIS method was 81.23%,and the biggest difference of Gi value in gray correlation analysis method was only 41.71%. Compared with the ranking trend line based on yield only,the trend lines of gray correlation analysis method Gi value ranking and DTOPSIS method Ci value ranking were more consistent. The results of correlation analysis showed that DTOPSIS method Ci value ranking was significantly positively correlated with the gray correlation analysis method Gi value ranking,but not significantly correlated with the ranking based on yield.【Conclusion】Both DTOPSIS method and gray correlation analysis method could comprehensively and objectively evaluate new spring rapeseed varieties. However,using DTOPSIS method to evaluate the differences between varieties was more comprehensive and the evaluation effect was better than the gray correlation analysis method.

Key words: Spring rapeseed, DTOPSIS method, Gray correlation analysis method, Comprehensive evaluation, Entropy weight

CLC Number: 

  • S634.3