Table 3. Successful crosses of Rl(♀) and Fm(♂) and their bird’s-nest fern pathogenicity.

Batch number	The number of non-infectious F1 lines	The number of infectious F1 lines (code)
1	6	2 (1-1,1-2)
2	8	0
3	0	1 (3-1)
4	0	3 (4-1,4-2,4-3)
5	– a	NA b
6	–	NA
7	–	NA
8	–	NA
Total number	14	6

^aNo viable F₁ resulted from the crosses in this batch, and each batch contained 10 crosses.

^bNot applicable.