Fig. 1

Phenotype characteristics of the mutant bnd2. a-b The hypocotyls length of one-week-old wild type (WT) and bnd2 seedlings. c-e Plants (c) and leaves (d-e) of WT and bnd2 at 5-week-old seedling stage. f-g Plants at peak flowering stage (f) and flowering period (g) of WT and bnd2. h Effects of the bnd2 mutant on plant height (PH), first branch height (FBH), main inflorescence length (MIL), internode length (IL) and internode number (IN). i-j Comparison of whole plant phenotype (i), internodes (j) between WT and bnd2. k-n Comparison of yield-related traits between WT and bnd2 including siliques per plant (SPP), seeds per silique (SPS), thousand-seed weight (TSW) and yield per plant (YPP). All values in (b, e, g, h, k-n) are mean ± standard deviation (SD) (n = 10). Bars = 20 cm in (a, f, i, j) and 5 cm in (c-d). Significance of difference was determined by Student’s t-test (n.s., not significant; *, P < 0.05; **, P < 0.01; ***, P < 0.001)