Table 1.

Disease evaluations of CR in CR38 × CS22.

Parents	Type	Year	Disease rating					DSI
			0	1	2	3	Total
CR38	R	2016	27	3	0	0	30	3.33
		2017	18	2	0	0	20	4.76
CS22	S	2016	0	0	0	15	15	100.00
		2017	0	0	4	18	22	94.44
CR38 × CS22	F2	2017	81	145	43	23	292	34.24

$\mathrm{DSI}(\%)=\frac{\sum \left(\mathrm{rating}\mathrm{class}\right)\times (\#\mathrm{plant}\mathrm{in}\mathrm{rating}\mathrm{class})}{\left(\mathrm{total}\#\mathrm{plants}\mathrm{in}\mathrm{treatment}\right)\times 3}\times 100$.