Fig. 4

– Measurements of six physiological parameters associated with resistance to FCR infection in SHWs and their parents. (A) The bar graphs display PAL activity, chitinase activity, SA content, JA content and ABA content of the stem base in 5 SHWs and their parents following FCR infection, respectively. (B) The box plots display average PAL activity, chitinase activity, SA content, JA content and ABA content of the stem base in 5 SHWs and their parents following FCR infection, respectively. (C) The bar graphs display lignin content of the stem base in 10 SHWs and their tetraploid parents at seedling and heading stages, respectively. (D) The box plots display average lignin content of the stem base in 10 SHWs and their tetraploid parents at seedling and heading stage. *p < 0.05, **p < 0.01. “SHW” represents synthetic hexaploid wheat, “TW” represents tetraploid wheat, “DW” represents diploid wheat