Establishment and verification of Perilla frutescens strong seedling index model based on entropy weight of fuzzy comprehensive evaluation

HAN Rui; GUO Xiaoxiao; LI Guohui; FU Chenqing; LIU Xudongyu; WANG Xiuping

doi:10.16861/j.cnki.zggc.2024.0194

Abstract：In order to quickly and conveniently determine the quality of Perilla frutescens seedlings,16 agronomic traits of 322 seedlings were measured at 4-leaf and 1-heart stage using Perilla frutescens as the experimental material . The 16 indicators were dimensionless using the membership function method,and the weight of each indicator were determined using the entropy weight method. The comprehensive evaluation index was calculated using the fuzzy comprehensive evaluation method. principal component analysis(PCA)was used for factor analysis to select strong seedling index with a high correlation to the comprehensive evaluation index. Three different varieties of Perilla were selected to verify the stability of the suitable seedling index. Using the deviation square sum method,the quality of Perilla seedlings was classified,and the transplant recovery index was calculated to comprehensively assess the growth status of Perilla seedlings after transplantation. The results showed that the robust seedling index model"leaf dry mass×stem dry mass×underground fresh mass × 10"could evaluate the quality of Perilla seedlings. When the strong seedling index was greater than 1.67,it was considered an excellent seedling. when the strong seedling index ranged from 1.19 to 1.65,it was considered an inter-mediate seedling. When the strong seedling index was less than 1.17,it was considered a weak seedling. The 100 tested Perilla seedlings were divided into four transplant recovery levels,corresponding to the robust seedling index ranges of 1.75-2.85,1.21-1.65,0-1.10 and 0 which were largely consistent with the critical value of robust seedling index. In summary,the robust seedling index model of"leaf dry mass×stem dry mass×underground fresh mass×10"can be used as a practice guide for the efficient production of high-quality Perilla seedlings.