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Table 3 Effect of potato genotype (Desiree, cisgenic Desiree, Sarpo Mira), disease management (control, chemical treatment) and year (2013, 2014, 2105) on nematode trophic diversity indices [enrichment index (EI), bacterial feeding c–p = 2 (BF2), bacterial feeding c–p = 1 (BF1), chanel index (CI) and the structure index (SI)] studied based on 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
EI Desiree Control 67 83 0 50 61 49*
Desiree Chemical 83 86 45 72 71
Cisgenic Desiree Control 61 92 14 56 67  
Cisgenic Desiree Chemical 97 81 56 78
Sarpo Mira Control 33 87 4 41 52
Sarpo Mira Chemical 95 92 0 62
Mean 73 87 20***  
BF2 Desiree Control 33 17 100 50 39 51*
Desiree Chemical 17 14 55 28 29
Cisgenic Desiree Control 39 8 86 44 33  
Cisgenic Desiree Chemical 3 19 44 22
Sarpo Mira Control 67 13 96 59 48
Sarpo Mira Chemical 5 8 100 38
Mean 27 13 80***  
CH Desiree Control 2 7 0 3 5 16
Desiree Chemical 3 1 16 7 6
Cisgenic Desiree Control 0 0 33 11 11  
Cisgenic Desiree Chemical 0 15 16 10
Sarpo Mira Control 0 3 100 34 17
Sarpo Mira Chemical 0 0 0 0
Mean 1 5 28  
BF1 Desiree Control 98 93 0 64 78 73
Desiree Chemical 97 99 84 93 83
Cisgenic Desiree Control 100 100 67 89 89  
Cisgenic Desiree Chemical 100 85 84 90
Sarpo Mira Control 100 97 0 66 66
Sarpo Mira Chemical 100 100 0 67
Mean 99 95 39***  
SI Desiree Control 89 54 17 53 54 47
Desiree Chemical 78 52 34 55 52
Cisgenic Desiree Control 53 77 0 43 41  
Cisgenic Desiree Chemical 44 70 0 38
Sarpo Mira Control 74 64 0 46 55
Sarpo Mira Chemical 82 67 41 63
Mean 70 64 16***  
  1. * P < 0.05, ** P < 0.01, *** P < 0.001