The analysis of HRF, the size of recombination events, leaf size and HRF per leaf size in plants exposed to 50 °C for different duration of time. The plants were exposed to 50 °C for 30 min, 2 h and 4 h at 7, 14, 21 and 28 dpg. All measurements were done in somatic tissues 10 days after stress application. The data are shown as a percentage relative to the control taken as 100 %. The error bars indicate a standard error calculated from 8 repeats (2 biological repeats, each with 4 technical repeats). The asterisks show a significant difference compared to the control (p < 0.05). a. Average HRF. b. Average spot size. c. Average leaf size. d. Average HRF related to leaf size