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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