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

Table 6 Sorensen coefficients calculated on comparisons within^a potato genotypes (control, chemical treatment) and between^b potato genotypes for each individual year (2013, 2014 and 2015) and total during the 3 years for nematode families and genus identified from study completed at Oak Park (Carlow, Ireland)

	Comparison^a	Year			Total	Comparison^b	Year			Comparison	Year
	Comparison^a	2015	2014	2013	Total	Comparison^b	2015	2014	2013	Comparison	2015	2014	2013
Family	Desiree control vs. chemical	0.63	0.50	0.53	0.63	Desiree vs. Cisgenic Desiree	0.48	0.37	0.53	Control vs. chemical	0.36	0.54	0.41
	Cisgenic Desiree control vs. chemical	0.43	0.73	0.43	0.79	Desiree vs. SarpoMira	0.49	0.47	0.62
	Sarpo Mira control vs. chemical	0.55	0.57	0.55	0.67	Cisgenic Desiree vs. Sarpo Mira	0.50	0.36	0.34
Genus	Desiree control vs. chemical	0.46	0.58	0.18	0.50	Desiree vs. Cisgenic Desiree	0.48	0.36	0.69	Control vs. chemical	0.32	0.48	0.31
	Cisgenic Desiree control vs. chemical	0.40	0.58	0.38	0.63	Desiree vs. SarpoMira	0.47	0.40	0.74
	Sarpo Mira control vs. chemical	0.28	0.52	0.64	0.64	Cisgenic Desiree vs. Sarpo Mira	0.49	0.41	0.64
							0.48	0.39	0.69***

Italic values indicate Sorensen coefficients for nematode genus identified in 2015, 2014 and 2013 between potato genotypes
* P < 0.05, ** P < 0.01, *** P < 0.001

ISSN: 1472-6785