Oat, Wheat, and Sorghum Genotype Reactions to Meloidogyne incognita and Meloidogyne javanica

Gall (GI) and egg-mass (EMI) indexes, reproduction factor (RF), and reaction (R) of Meloidogyne incognita and Meloidogyne javanica in wheat and oat genotypes at 60 d after nematode inoculation. Tomato (cv. Rutgers) plants were used as the standard of nematodes susceptibility

Crop	Genotype	Test 1					Test 2
Crop	Genotype	GI^a	EMI^a	RF^b	R^c	GI	EMI	RF	R
Meloidogyne incognita
Tomato	Rutgers	4.4	3.8	12.2	S	4.4	4.4	15.1	S
Wheat	CD-150	0	0	0	R	1.0	0.8	0.1	R
	CD-108	0	0	0	R	1.4	1.2	0.1	R
	CD-118	0	0	0	R	1.8	1.6	0.2	R
	BRS-220	0	0	0	R	2.6	2.6	0.2	R
	BRS-Tangará	0	0	0	R	2.2	2.2	0.7	R
	CD-104	0	0	0	R	0	0	0	R
	BRS-Pardela	0.4	0.2	0	R	3.0	3.0	0.3	R
Oat	URS-Gúria	0	0	0	R	0	0	0	R
	URS-Tarimba	0	0	0	R	0	0	0	R
	URS-21	0	0	0	R	0	0	0	R
	IAC-7	0	0	0	R	0	0	0	R
	IPR-126	0	0	0	R	0	0	0	R
Meloidogyne javanica
Tomato	Rutgers	4.4	4.2	13.9	S	4.2	4.0	15.4	S
Wheat	CD-150	0	0	0	R	2.4	2.4	0.1	R
	CD-108	0	0	0	R	2.4	2.2	0.1	R
	CD-118	0	0	0	R	1.8	2.2	0.3	R
	BRS-220	0	0	0	R	1.6	1.6	0.6	R
	BRS-Tangará	0.6	0.4	0	R	1.4	0.8	0.1	R
	CD-104	0	0	0	R	3.4	0.8	0.1	R
	BRS-Pardela	0	0	0	R	2.8	3.0	0.7	R
Oat	URS-Gúria	0	0	0	R	0	0	0	R
	URS-Tarimba	0	0	0	R	0	0	0	R
	URS-21	0	0	0	R	0	0	0	R
	IAC-7	0	0	0	R	0	0	0	R
	IPR-126	0	0	0	R	0	0	0	R

1a GI and EMI = note 0 (without galls or egg masses); grade 1 (1–2 galls or egg masses per root); grade 2 (3–10 galls or egg masses per root); grade 3 (11–30 galls or egg masses per root); grade 4 (31–100 galls or egg masses per root); and grade 5 (more than 100 galls or egg masses per root).

2b RF = final population (Pf)/initial population (Pi = 5,000).

3c R = resistant (RF < 1.0); S = susceptible (RF ≥ 1.0).

TABLE 2.

Gall (GI) and egg-mass (EMI) indexes, reproduction factor (RF), and reaction (R) of Meloidogyne incognita and Meloidogyne javanica in sorghum hybrids at 60 d after nematode inoculation. Tomato (cv. Rutgers) plants were used as the standard of nematodes susceptibility

Genotypes	Type^a	Test 1				Test 2
Genotypes	Type^a	GI^b	EMI^b	RF^c	R^d	GI	EMI	RF	R
Meloidogyne incognita
Tomato ‘Rutgers’	-	4.4	4.0	15.1 ab	S		4.6	23.26 a	S
						5.0
BRS-802	HF*	2.8	4.6	22.6 a	S		2.4	2.9 b	S
						3.8
BRS-700	HF	3.8	3.6	13.5 ab	S		1.4	2.8 b	S
						1.6
BRS-801	HF*	1.8	1.0	12.2 abc	S		3.0	4.9 b	S
						4.0
BRS-308	HG	2.8	3.4	4.6 bcd	S		4.0	4.3 b	S
						4.0
307.671	HEG	0.6	0	2.9 cd	S		0	0 c	R
						0.2
BRS-655	HF	1.2	0.8	2.3 d	S		0.2	0.4 c	R
						0.2
BRS-332	HG	1.0	0.4	2.0 d	S		0.4	0.8 c	R
						0.6
307.689	HEG	1.4	0.6	1.3 d	S	0	0	0 c	R
BRS-330	HG	0	0	0.9 d	R	0	0	0.3 c	R
BRS-610	HF	0.6	0.4	0.7 d	R		0.8	0.4 c	R
						1.2
BRS-800	HF*	1.2	0	0.5 d	R	0	0	0.1 c	R
BRS-310	HG	0.8	0.2	0.4 d	R	0	0	0.1 c	R
307.343	HEG	1.2	0.6	0.4 d	R	0	0	0.1 c	R
C.V. (%)	-			44.6				20.9
Meloidogyne javanica
Tomato ‘Rutgers’	-	4.2	4.0	15.3 ab	S	5.0	5.0	15.16 a	S
BRS-802	HF*	1.6	3.2	25.5 a	S	2.6	1.6	4.8 cd	S
BRS-801	HF*	2.0	2.2	15.5 ab	S	1.2	0.8	5.0 cd	S
BRS-700	HF	3.2	2.8	13.9 ab	S	3.4	3.4	15.0 b	S
BRS-655	HF	2.0	2.0	8.0 bc	S	3.0	2.8	7.4 c	S
307.689	HEG	1.2	0.2	1.8 c	S	0	0	0 e	R
BRS-330	HG	0.6	0	1.2 c	S	0.2	0	0.7 e	R
307.671	HEG	1.0	0	1.0 c	S	0	0	0 e	R
BRS-332	HG	0.2	0	0.8 c	R	0	0	0.1 e	R
BRS-800	HF*	0	0	0.9 c	R	0.2	0	0.1 e	R
307.343	HEG	1.4	0	0.5 c	R	0	0	0e	R
BRS-610	HF	1.0	0	0.5 c	R	1.2	0.4	0.1 e	R
BRS-310	HG	1.6	0.2	0.5 c	R	0.6	0.6	1.9 de	S
BRS-308	HG	2.2	4.0	0.3 c	R	2.2	2.0	7.8 c	S
C.V. (%)	-			38.7				26.0

1 Mean values of five replications; mean values followed by the same letter per column did not differ by the Tukey test (P = 0.05).

2a HF* = Foraging hybrid (S. bicolor × S. sudanense); HF = Foraging hybrid, HG = Grain hybrid, HEG = Experimental grain hybrid.

3b GI and EMI = note 0 (without galls or egg masses); grade 1 (1–2 galls or egg masses per root); grade 2 (3–10 galls or egg masses per root); grade 3 (11–30 galls or egg masses per root); grade 4 (31–100 galls or egg masses per root); and grade 5 (more than 100 galls or egg masses per root).

4c RF = final population (Pf)/initial population (Pi = 5,000).

5d R = resistant (RF < 1.0); S = susceptible (RF ≥ 1.0).

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DOI: https://doi.org/10.21307/jofnem-2017-086 | Journal eISSN: 2640-396X | Journal ISSN: 0022-300X

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Language: English

Page range: 386 - 389

Submitted on: Jun 20, 2017

Published on: Sep 26, 2018

Published by: Society of Nematologists, Inc.

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© 2018 ANDRESSA LIMA DE BRIDA, ÉRIKA CRISTINA SOUZA DA SILVA CORREIA, BÁRBARA MONTEIRO DE CASTRO E CASTRO, JOSÉ COLA ZANUNCIO, SÍLVIA RENATA SICILIANO WILCKEN, published by Society of Nematologists, Inc.
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Volume 49 (2017): Issue 4 (January 2017)