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

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

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	61	71
	Cisgenic Desiree	Control	61	92	14	56	67
	Cisgenic Desiree	Chemical	97	81	56	78	67
	Sarpo Mira	Control	33	87	4	41	52
	Sarpo Mira	Chemical	95	92	0	62	52
	Mean		73	87	20***
BF₂	Desiree	Control	33	17	100	50	39	51*
	Desiree	Chemical	17	14	55	28	39	29
	Cisgenic Desiree	Control	39	8	86	44	33
	Cisgenic Desiree	Chemical	3	19	44	22	33
	Sarpo Mira	Control	67	13	96	59	48
	Sarpo Mira	Chemical	5	8	100	38	48
	Mean		27	13	80***
CH	Desiree	Control	2	7	0	3	5	16
	Desiree	Chemical	3	1	16	7	5	6
	Cisgenic Desiree	Control	0	0	33	11	11
	Cisgenic Desiree	Chemical	0	15	16	10	11
	Sarpo Mira	Control	0	3	100	34	17
	Sarpo Mira	Chemical	0	0	0	0	17
	Mean		1	5	28
BF₁	Desiree	Control	98	93	0	64	78	73
	Desiree	Chemical	97	99	84	93	78	83
	Cisgenic Desiree	Control	100	100	67	89	89
	Cisgenic Desiree	Chemical	100	85	84	90	89
	Sarpo Mira	Control	100	97	0	66	66
	Sarpo Mira	Chemical	100	100	0	67	66
	Mean		99	95	39***
SI	Desiree	Control	89	54	17	53	54	47
	Desiree	Chemical	78	52	34	55	54	52
	Cisgenic Desiree	Control	53	77	0	43	41
	Cisgenic Desiree	Chemical	44	70	0	38	41
	Sarpo Mira	Control	74	64	0	46	55
	Sarpo Mira	Chemical	82	67	41	63	55
	Mean		70	64	16***

ISSN: 1472-6785