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Table 5 Population parameters of the powdery mildew pathogen in the Republic of Kazakhstan in 2015 and 2016

From: Characterizing the pathotype structure of barley powdery mildew and effectiveness of resistance genes to this pathogen in Kazakhstan

Population parameter

South Kazakhstan region

Zhambyl region

Total in two regions

Sa

Kg

Tb

Ob

Total

Mk

S

Rk

Total

Number of isolates

21

16

20

9

66

19

14

8

41

107

Number of pathotypes

13

6

7

6

19

7

6

6

9

23

Number of pathotypes with at least two isolates

4

6

6

3

10

6

5

2

7

11

Mean of isolate complexity

3.38

3.06

2.95

3.22

3.15

3.00

2.86

3.00

3.95

3.07

Mean of pathotype complexity

3.77

3.00

3.00

3.50

3.63

2.86

3.00

3.00

2.89

3.48

Abundancea

19.05

18.75

25.00

22.22

18.18

21.05

28.57

25.00

19.51

18.69

Richnessb

0.62

0.38

0.35

0.67

0.29

0.37

0.43

0.75

0.22

0.21

H G c

3.05

1.81

2.01

2.28

4.31

2.04

1.90

2.42

2.16

4.71

D c

0.85

0.67

0.71

0.67

0.89

0.71

0.67

0.67

0.78

0.91

H W c

2.46

1.86

1.80

1.71

2.44

1.88

1.72

1.78

2.03

2.76

E c

0.96

0.96

1.00

0.95

0.86

0.97

0.96

0.99

0.92

0.91

  1. aFrequency of the predominant pathotype (%)
  2. bNumber of pathotypes/number of isolates
  3. c H G is the Gleason index of diversity, D = Simpson index, H W is the Shannon index of diversity, and E is a measure of genetic evenness