1School of Life Sciences，Tianjin Normal University，Tianjin 300387，China；2Tianjin Key Laboratory of Vegetable Genetics and Breeding Enterprises，State Key Laboratory of Vegetable Germplasm Innovation，Tianjin Kerun Vegetable Research Institute，Tianjin 300381，China；3College of Life Sciences，Tianjin University，Tianjin 300072，China
Abstract：Phenotypic evaluation of major agronomic traits is an important accordance for green radish breeding．This paper carried out variation analysis，correlation analysis，principal component analysis and clustering analysis on 33 major agronomic traits of 48 germplasm resources of green radish．The results showed that there were variation of different degrees in 9 quantitative traits．The variation coefficient of single plant weight was maximum-32.46%，and that of leaf width was minimum-14.67%．There existed complicated correlation among typical agronomic traits taking fleshy root as main body．There were 29 pairs with extreme significant correlation and 8 pairs with significant correlation．There were 9 principal components extracted from 33 agronomic traits，and their cumulative contribution rate was 78.937%，basically reflecting the agronomic traits information of the upper and under ground parts of green radish．When the squared Euclidean distance coefficient was 8.5，the 48 germplasm resources of green radish could be divided into 3 groups．The first group included 33 materials with major characteristics of plant height，stretching degree，leaf length，leaf width and leaf blade number．Those values were the least among the 3 groups．The second group included 14 materials with major characteristics of plant type，medium size of leaf blades，etc．The third group included only 1 material．Its plant height，stretching degree，single plant weight and single root weight was the largest among these 3 groups．
