Abstract:In this study, 28 E. sibiricus accessions were selected and evaluated for agronomic performance in 15 traits in order to screen the materials with low seed shattering rate and excellent agronomic traits. The cluster analysis, correlative analysis, and component analysis were conducted by SPSS 19.0. The subordinate function was used for the comprehensive evaluation of agronomic traits. The results indicated the higher seed shattering rate were found at about 31 days after flowering. Variation of seed shattering varied in tested accessions, great variation were found in ZhN03 and MQ01. Meanwhile, seed shattering of individual plant
within each accessions varied as well. Based two years’ data, XH09 had the highest seed shattering rate, followed by XH03, LQ03 and LQ04; ZhN03 and MQ01 had relatively low seed shattering rate. The correlative analysis revealed that significant negative correlation exist between shattered rate and flag leaf width(-0.47), shattered rate and internodes number(-0.44); Length of the second leaf from the inflorescence is highly significant negative correlative with the shattered rate (-0.50). Phenotypic variation were also found in other traits, of which tiller number has the greatest variation with the CV of 17.7%. The subordinative function showed ZhN03 had the best comprehensive performance with subordinate function value of 0.73. These screened materials with low seed shattering rate and excellent agronomic performance are important materials for future breeding programs.