|Population structure ofBlumeria graminisby geographic region, host origin and pathogenicity|
|By geographic region|
|Region A (36) vs. region B (14) vs. region C (10) vs. region D (6)||0.5468*||0.0469**|
|By host origin|
|triticale (33) vs. wheat (33)||0.8654**||0.0397**|
|By year of collection within host origin wheat|
|Region D 1980’s (6) vs. Region A-B-C 2009–2010||0.7283ns||−0.0025ns|
|By geographic region within host origin triticale|
|region A (16) vs. region B (8) vs. region C (9)||0.5899**||0.1008**|
|region A (16) vs. region B (8)||0.6597ns||0.0019ns|
|region A (16) vs. region C (9)||0.7667*||0.1116*|
|region B (8) vs. region C (9)||0.8677*||0.1428*|
|Pathogenic (37) vs. non-pathogenic (29) on triticale||0.9811**||0.0565**|
Region A represents Belgium, region B France, region C Poland and region D Israel.
aSample sizes are in parentheses.
bSnn (the nearest neighbor statistic) measures how often the most similar sequence (or sequences) is from the same designated population. Snn has a high power with small population sizes.
cHST is a measure of population subdivision that estimates FST among populations.
P-values were estimated after 1000 permutations; nsP > 0.01; *P < 0.01; **P < 0.001.
Troch et al.
Troch et al. BMC Evolutionary Biology 2012 12:76 doi:10.1186/1471-2148-12-76