Table 3.

The infection type (IT) diversity and genetic diversity analyses of cultivars in four periods

Statistics	Period 1	Period 2	Period 3	Period 4
Min	1	1	1	1
Max	4	4	4	4
Mean	3.31	2.35	2.35	2.61
H′	0.80	0.96	0.98	0.98
Gene Diversity	0.30	0.34	0.34	0.31
PIC	0.24	0.27	0.27	0.25

The periods 1–4 were from 1997 to 2001, 2002 to 2006, 2007 to 2011 and 2012 to 2016, respectively

H‘, Shannon-Weaver diversity index

PIC, polymorphism information content index