Screening Selected Solanum Plants as Potential Rootstocks for the Management of Root-Knot Nematodes (Meloidogyne incognita)

Table 1

Initial and final nematode count, mean gall scores, egg count/g of root, and reproductive factors (RFs) of RKNs after 6 and 12 weeks of transplanting rootstocks in 2015 (year 1) and 2016 (year 2) for field experiments.

Treatment	Nematode count/200 cm^3 of soil			Mean gall scores (0–10)		Egg count/gram of root (transformed)		Reproductive factor (Pf/Pi)		^yReaction
Weeks	Initial(Pi)	Six (Pf)	Twelve (Pf)	Six	Twelve	Six	Twelve	Six	Twelve
Year 1 (dry season)
Sam	133.00	85.33	48.67	0.50^a	0.33^a	16.30 (1.06)^a	54.33 (1.23)^a	0.64	0.36	R
Mon	839.33	59.67	99.00	0.67^a	3.00^ab	14.30 (0.90)^a	1047.67 (2.33)^ab	0.07	0.12	T
S. M	197.67.00	46.67	24.00	0.33^a	0.67^a	2.00 (0.43)^a	1438.33 (3.06)^bc	0.24	0.12	T
S. A	255.33	112.67	400.00	1.67^a	5.17^b	17.00 (0.86)^a	14714.00 (4.07)^c	0.44	1.57	T
Year 2 (rainy season)
Sam	397.00	178.00	227.00	0.17	0.67	20.00^a	900.00 (2.66)^a	0.45	0.57	R
Mon	220.00	176.00	331.00	0.50	1.67	50.00^a	5145.00 (3.68)^b	0.80	1.50	T
S. M	472.00	244.00	515.00	0.00	1.33	33.00^a	4267.00 (3.58)^b	0.52	1.09	T
S. A	239.00	286.00	567.00	0.50	2.17	48.00^a	11280.00 (3.91)^c	1.20	2.37	T

Gall scores: 0 = no knots on roots; 10 = all roots severely knotted, plant usually dead; rootstocks: Sam = Samrudhi F1; Mon = Mongal F1; S. M = S. macrocarpon; S. A = S. aethiopicum. ^yReaction of rootstocks derived from 6 to 12 weeks after transplanting rootstocks (R = resistance and T = tolerance). Means having different letters in a column differed significantly (). Log (x + 1) transformed.