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Table 2 Impact of potato genotype (Desiree, cisgenic Desiree, Sarpo Mira), disease management (control, chemical treatment) and year (2013, 2014, 2105) on nematode community ecological succession indices [maturity index (MI), plant parasite index (PPI), modified MI to include removing of the c–p = 1 family (MIMO) and removing of the c–p = 1 family but with inclusion of the PPI to generate ∑MIMO] from rhizospheric samples taken from Oak Park field site

From: A temporal assessment of nematode community structure and diversity in the rhizosphere of cisgenic Phytophthora infestans-resistant potatoes

Index

Potato genotype

Disease management

2015

2014

2013

Mean

Mean/genotype

Mean/disease management

MI

Desiree

Control

3.05

1.76

2.27

2.36

2.14

2.18

Desiree

Chemical

2.10

1.61

2.07

1.93

1.84

Cisgenic Desiree

Control

2.03

2.15

1.97

2.05

1.87

 

Cisgenic Desiree

Chemical

1.16

2.13

1.79

1.69

Sarpo Mira

Control

2.63

1.76

2.00

2.13

2.02

Sarpo Mira

Chemical

1.86

1.56

2.30

1.91

Mean

2.14

1.83

2.07

 

PPI

Desiree

Control

3.00

3.50

2.00

2.83

1.97

2.70

Desiree

Chemical

0.00

0.00

3.31

1.10

2.10

Cisgenic Desiree

Control

2.50

3.00

2.40

2.63

2.23

 

Cisgenic Desiree

Chemical

0.00

2.67

2.83

1.83

Sarpo Mira

Control

3.00

2.71

2.29

2.67

3.01

Sarpo Mira

Chemical

3.00

3.67

3.39

3.35

Mean

1.92

2.59

2.70

 

PPI/MI

Desiree

Control

0.98

1.99

0.88

1.28

0.91

1.28

Desiree

Chemical

0.00

0.00

1.60

0.53

1.10

Cisgenic Desiree

Control

1.23

1.40

1.22

1.28

1.11

 

Cisgenic Desiree

Chemical

0.00

1.25

1.58

0.95

Sarpo Mira

Control

1.14

1.54

1.15

1.28

1.54

Sarpo Mira

Chemical

1.61

2.35

1.47

1.81

Mean

0.83

1.42

1.32

 

MIMO

Desiree

Control

3.46

2.47

2.10

2.68

2.61

2.53

Desiree

Chemical

3.00

2.39

2.23

2.54

2.57

Cisgenic Desiree

Control

2.33

2.94

2.00

2.42

2.40

 

Cisgenic Desiree

Chemical

2.33

2.80

2.00

2.38

Sarpo Mira

Control

2.83

2.63

2.00

2.49

2.64

Sarpo Mira

Chemical

3.38

2.71

2.30

2.80

Mean

2.89

2.66

2.11**

 

∑MIMO

Desiree

Control

3.42

2.89

2.08

2.80

2.74

2.61

Desiree

Chemical

3.00

2.39

2.64

2.68

2.74

Cisgenic Desiree

Control

2.34

2.94

2.09

2.46

2.50

 

Cisgenic Desiree

Chemical

2.33

2.79

2.50

2.54

Sarpo Mira

Control

2.84

2.68

2.13

2.55

2.79

Sarpo Mira

Chemical

3.30

2.88

2.88

3.02

Mean

2.87

2.76

2.39

 
  1. * P < 0.05, ** P < 0.01, *** P < 0.001