Fig. 4

Analysis of the expression levels (a-c) and (d) GBSSI enzyme activity of wheat Wx protein subunits in SM126 lines (Wx-abD, Wx-Abd, and Wx-AbD). GBSSI activity and expression levels were measured in endosperms 15 days after anthesis (DAA). Asterisks indicate statistically significant differences between the Wx-AbD and mutant lines, as determined by Student’s t-test (**P < 0.01)