Table 1. Summary statistics of exon sequence diversity for Mycosphaerella populations collected from wheat and wild grasses.

Enzyme	Host	n a	Codonsb	Sc	K d	Sde	πf
β-xylosidase	total on wheat	95	294	41	33 (12)	0.889 (0.888)	0.009
	Iran on wheat	36	294	22	8 (6)	0.679 (0.678)	0.007
	Iran on grass S1	22	294	0	1	0	0
	Iran on grass S2	22	294	0	1	0	0
Cellulase	total on wheat	108	170	49	59 (15)	0.945 (0.944)	0.021
	Iran on wheat	45	170	19	7 (5)	0.709 (0.709)	0.010
	Iran on grass S1	21	170	34	2 (2)	0.467 (0.467)	0.031
	Iran on grass S2	20	170	1	2 (2)	0.337 (0.337)	0.001
Cutinase	total on wheat	109	206	43	55 (14)	0.960 (0.959)	0.011
	Iran on wheat	46	206	30	26 (14)	0.957 (0.957)	0.012
	Iran on grass S1	22	206	8	2 (2)	0.485 (0.485)	0.006
	Iran on grass S2	18	206	7	2 (2)	0.425 (0.425)	0.005
Polygalacturonase	total on wheat	108	295	53	40 (13)	0.952 (0.953)	0.009
	Iran on wheat	48	295	14	17 (11)	0.936 (0.936)	0.006
	Iran on grass S1	22	295	27	2 (2)	0.519 (0.519)	0.016
	Iran on grass S2	17	295	1	2 (2)	0.529 (0.529)	0.001
Xylanase	total on wheat	101	220	29	49 (17)	0.968 (0.961)	0.011
	Iran on wheat	46	220	21	25 (13)	0.980 (0.975)	0.011
	Iran on grass S1	22	220	22	4 (3)	0.766 (0.765)	0.017
	Iran on grass S2	22	220	13	3 (3)	0.524 (0.524)	0.010

NOTE. Numbers in brackets are simulated values adjusted to the smallest sample size. One of the cutinase haplotypes (found in two isolates from Israel) contained a TGA stop-codon, and was hence excluded from the selection analyses.

^anumber of isolates, ^b number of codons, ^c number of polymorphic sites, ^d number of haplotypes, ^e haplotype (gene) diversity, ^f nucleotide diversity.