Effect of Soil Temperature on Reproduction of Root-knot Nematodes in Flue-cured Tobacco with Homozygous Rk1 and/or Rk2 Resistance Genes

Jill R. Pollok; Charles S. Johnson; J.D. Eisenback; T. David Reed; Noah Adamo

doi:10.2478/jofnem-2023-0032

.blurhash-client-img { display: none !important; }

Effect of Soil Temperature on Reproduction of Root-knot Nematodes in Flue-cured Tobacco with Homozygous Rk1 and/or Rk2 Resistance Genes

Journal of Nematology

Volume 55 (2023): Issue 1 (February 2023)

By: Jill R. Pollok, Charles S. Johnson, J.D. Eisenback, T. David Reed and Noah Adamo

Open Access

|Aug 2023

Figures & Tables

Percent root galling of six tobacco (Nicotiana tabacum L.) entries inoculated with a population of Meloidogyne incognita race 3 and grown at three soil temperatures in greenhouse trials. (A) summer (June–July 2014), (B) fall (Sept–Oct 2014), and (C) winter (Dec 2014–Jan 2015). Data presented are the means of four observations from the summer trial and six observations from the fall and winter trials. Means for experimental entries associated with the same letter(s), within each season and soil temperature, are not significantly different according to the Tukey-Kramer honest significant difference (HSD) test of transformed [log10(x+1)] data (P = 0.05). Susc. = susceptible.

Numbers of egg masses per gram root of a population of Meloidogyne incognita race 3 on six tobacco (Nicotiana tabacum L.) entries grown at three soil temperatures in greenhouse trials. (A) summer (June–July 2014), (B) fall (Sept–Oct 2014), and (C) winter (Dec 2014–Jan 2015). Data presented are means of four observations from the summer trial and six observations from the fall and winter experiments. Means for experimental entries associated with the same letter(s), within each season and soil temperature, are not significantly different according to the Tukey-Kramer honest significant difference (HSD) test of transformed [log10(x+1)] data (P = 0.05). Susc. = susceptible.

Total egg production per gram of root of a population of Meloidogyne incognita race 3 on six tobacco (Nicotiana tabacum L.) entries grown at three soil temperatures in greenhouse trials. (A) summer (June–July 2014), (B) fall (Sept–Oct 2014), and (C) winter (Dec 2014–Jan 2015). Data presented are means of four observations from the summer trial and six observations from the fall and winter experiments. Means for experimental entries associated with the same letter(s), within each season and soil temperature, are not significantly different according to the Tukey-Kramer honest significant difference (HSD) test of transformed [log10(x+1)] data (P = 0.05). Susc. = susceptible.

Reproduction of a population of Meloidogyne incognita race 3 on six tobacco (Nicotiana tabacum L_) entries grown at three soil temperatures in greenhouse trials conducted in 2014–2015_

Plant entry	Resistance genes	Soil temperature (°C)	Reproductive index (P_f/P_i)^ab by trial

			June–July 2014 (summer)	Sept–Oct 2014 (fall)	Dec 2014–Jan 2015 (winter)
C371G	None	25	11.3 A	18.5 a	9.4 a’
T-15-1-1	Rk2	25	3.0 B	1.9 b	3.6 b’
SC 72	Rk1	25	0.7 C	0.3 b	0.2 c’
NC 95	Rk1	25	0.6 C	0.2 b	0.1 c’
NOD 8	Rk1Rk2	25	0.2 C	0.4 b	0.2 c’
STNCB-2-28	Rk1Rk2	25	0.2 C	0.5 b	0.1 c’
C371G	None	30	14.8 A	29.3 a	38.9 a’
T-15-1-1	Rk2	30	11.8 A	35.4 a	25.3 a’
SC 72	Rk1	30	1.9 B	0.7 b	3.8 bc’
NC 95	Rk1	30	1.3 B	1.2 b	8.7 b’
NOD 8	Rk1Rk2	30	0.1 B	0.9 b	3.3 bc’
STNCB-2-28	Rk1Rk2	30	1.7 B	1.2 b	1.8 c’
C371G	None	35	3.5 A	50.0 a	10.5 a’
T-15-1-1	Rk2	35	3.5 A	37.0 a	10.8 a’
SC 72	Rk1	35	2.3 A	1.1 b	3.4 a’
NC 95	Rk1	35	1.9 A	1.7 b	5.8 a’
NOD 8	Rk1Rk2	35	3.7 A	1.2 b	3.2 a’
STNCB-2-28	Rk1Rk2	35	2.9 A	2.5 b	2.5 a’

References

Authors

Metrics

Articles in this issue

DOI: https://doi.org/10.2478/jofnem-2023-0032 | Journal eISSN: 2640-396X | Journal ISSN: 0022-300X

Journal RSS Feed

Language: English

Submitted on: Apr 8, 2022

Published on: Aug 1, 2023

Published by: Society of Nematologists, Inc.

In partnership with: Paradigm Publishing Services

Publication frequency: 1 issue per year

Keywords:

Meloidogyne incognita race 3,

Meloidogyne arenaria,

Related subjects:

© 2023 Jill R. Pollok, Charles S. Johnson, J.D. Eisenback, T. David Reed, Noah Adamo, published by Society of Nematologists, Inc.
This work is licensed under the Creative Commons Attribution 4.0 License.

Volume 55 (2023): Issue 1 (February 2023)

Effect of Soil Temperature on Reproduction of Root-knot Nematodes in Flue-cured Tobacco with Homozygous Rk1 and/or Rk2 Resistance Genes

Figures & Tables

Figure 1:

Figure 2:

Figure 3:

Reproduction of a population of Meloidogyne incognita race 3 on six tobacco (Nicotiana tabacum L_) entries grown at three soil temperatures in greenhouse trials conducted in 2014–2015_

Paradigm

My account