Soybean Cyst Nematode Population Development and Its Effect on Pennycress in a Greenhouse Study Cover

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Soybean Cyst Nematode Population Development and Its Effect on Pennycress in a Greenhouse Study

Journal of Nematology

Volume 54 (2022): Issue 1 (February 2022)

By: Cody Hoerning, Senyu Chen, Katherine Frels, Donald Wyse, Samantha Wells and James Anderson

Open Access

|Apr 2022

Figures & Tables

Influence of inoculation level and crop treatment on final SCN egg population density in the greenhouse evaluation experiment. Soybean-S was soybean genotype ‘Sturdy’; PC-MN103 was pennycress genotype ‘MN103’; PC-MN106 was pennycress genotype ‘MN106’; and PC-MN108 was pennycress genotype ‘MN108’. The genotypes were sourced from the University of Minnesota pennycress and soybean breeding programs. Error bars denote standard error. Within an inoculation level, bars with the same lowercase letter did not differ in SCN population density using Tukey–Kramer least-square means (P < 0.05). SCN, soybean cyst nematode.

Likelihood-ratio χ2-test for SCN population density, as influenced by crop ([C]: MN103, MN106, MN108, and soybean), HG type (HG Types 0, 2_5_7, and 1_3_6), and inoculation ([I]: 0, 2,000, and 20,000 eggs/100 cm3 soil)_

Source of fixed variation	χ²	Numerator Df	P-value
Crop (C)	96.1514	3	< 2.2e−16^***
HG type (H)	1.4823	2	0.4766
Inoculation (I)	38.4078	1	5.74e−10^***
C × H	2.9414	6	0.8162
C × I	38.9127	3	1.81e−08^***
H × I	1.1895	2	0.5517
C × H × I	5.5155	6	0.4796

Two-sided t-test results of the crop treatments at inoculation level of 2,000 eggs/100 cm3 soil_

Crop	Mean	t	Df	Sig. t
MN 103	1,999	−0.003	22	0.999
MN 106	2,258	0.493	23	0.627
MN 108	1,621	−0.908	22	0.374
Soybean	9,601	4.437	23	0.0002^***

Likelihood-ratio χ2-test for RF, as influenced by crop ([C]: MN103, MN106, MN108, and soybean), HG type (HG Types 0, 2_5_7, and 1_3_6), and inoculation ([I]: 0, 2,000, and 20,000 eggs/100 cm3 soil)_

Source of fixed variation	χ²	Numerator Df	P-value
Crop (C)	84.963	3	< 2.2e−16^***
HG type (H)	1.2603	2	0.532513
Inoculation (I)	20.9222	1	4.78e−06^***
C × H	0.648	6	0.995546
C × I	12.5867	3	0.005621^**
H × I	0.8214	2	0.663195
C × H × I	3.7566	6	0.709577

Likelihood-ratio χ2-test for crop treatment biomass as influenced by inoculation ([I]: 0, 2,000, and 20,000 eggs/100 cm3 soil)_

Crop	χ²	Numerator Df	P-value
MN 103	3.704	2	0.1569
MN 106	0.393	2	0.8216
MN 108	0.06	2	0.9705
Soybean ‘Sturdy’	2.58	2	0.2752

Two-sided t-test results of the crop treatments at inoculation level of 20,000 eggs/100 cm3 soil_

Crop	Mean	t	Df	Sig. t
MN 103	5,777	−11.712	20	2.09e−10^***
MN 106	6,559	−10.676	23	2.19e−10^***
MN 108	7,667	−7.738	23	7.55e−08^***
Soybean	4,0739	3.185	23	0.004^**

Shoot biomass as determined by inoculation level of pennycress and soybean lines_

Crop	Biomass (g) at treatment level of

	0 eggs/100 cm³	2,000 eggs/100 cm³	20,000 eggs/100 cm³
MN103	7.13	8.75	8.49
MN106	8.16	8.70	8.30
MN108	9.04	9.05	9.08
Susceptible soybean ‘Sturdy’	12.41	13.92	12.59

Reproductive factor for crop treatment_

Crop	RF (P_f/P_i) at treatment level of

	2,000 eggs 100/cm³	20,000 eggs 100/cm³
MN103	1.00 a	0.29 a
MN106	1.13 a	0.33 a
MN108	0.81 a	0.38 a
Susceptible soybean ‘Sturdy’	4.80 b	2.04 b

DOI: https://doi.org/10.2478/jofnem-2022-0006 | Journal eISSN: 2640-396X | Journal ISSN: 0022-300X

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Language: English

Submitted on: Feb 16, 2021

Published on: Apr 11, 2022

Published by: Society of Nematologists, Inc.

In partnership with: Paradigm Publishing Services

Publication frequency: 1 issue per year

Keywords:

alternative host,

host–parasitic relationship,

host suitability,

soybean cyst nematode

Related subjects:

Life sciences, other

© 2022 Cody Hoerning, Senyu Chen, Katherine Frels, Donald Wyse, Samantha Wells, James Anderson, published by Society of Nematologists, Inc.
This work is licensed under the Creative Commons Attribution 4.0 License.

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