Effect of fungal, oomycete and nematode interactions on apple root development in replant soil

Table 2 Selected tree traits for which there were significant differences among the four rootstock genotypes

Genotype	Trunk diameter (mm)				Trunk girth (cm)				Net scion height (cm)		Root biomass (g) ⁴	Rootstock trunk biomass (g) ⁴	Scion biomass (g)	Number of branches	Total branch length (mm) ⁵
	Rootstock		Scion		Rootstock		Scion		Net scion height (cm)
	M6 ¹	M15^1,2	M6	M15	M6	M15	M6	M15	M6³	M15
G.41	10.8	14.3b⁶	8.9	11.8	3.5	4.9	2.8	4.1	79.9a	132.7	27.7b	30.3c	83.8	9.6c	128.2a
M.116	10.1	13.4c	8.7	11.9	3.3	4.7	2.2	4.2	66.7b	128.8	26.1b	26.9a	85.8	8.8b	160.6c
M.9	10.6	14.8a	8.9	11.4	3.4	5.0	2.7	4.1	64.9b	128.0	20.8a	29.9b	84.4	6.8a	108.0a
M.M.106	10.5	13.3c	8.7	11.8	3.3	4.7	2.7	4.1	72.6c	132.3	25.9b	32.5c	85.2	8.3b	142.2b

¹Values are means of measurements made 6 and 15 months (M6 and M15, respectively) after planting, unless otherwise indicated
²The rate of trunk diameter increase between month 0 and 15, namely (TD15-TD0)/TD0, and trunk diameter at month 0 used as a covariate
³The rate of net height increase between month 0 and 8, namely (NH8-NH0)/NH0
⁴The rootstock trunk girth at month 15 was used as a covariate
⁵Significance was for branch length when the number of branches was used as a covariate
⁶Treatments with the different low case letters differed significantly at P = 0.05 based on the nest-model comparisons

ISSN: 2662-4044