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Reproduction and life history traits of a resistance breaking Globodera pallida population

Journal of Nematology
Volume 51 (2019): Issue 1 (January 2019)
By:
Open Access
|Dec 2019

Figures & Tables

Figure 1:

Cumulative percentage hatch of Globodera pallida Oberlangen (Ober) and Chavornay (Chav) in potato root diffusate (PRD), Zinc Chloride (ZnCl2), and water (H2O) over a period of eight weeks. The error bars represent the standard error of the mean.
Cumulative percentage hatch of Globodera pallida Oberlangen (Ober) and Chavornay (Chav) in potato root diffusate (PRD), Zinc Chloride (ZnCl2), and water (H2O) over a period of eight weeks. The error bars represent the standard error of the mean.

Figure 2:

Number of second-stage juveniles (J2s) of Globodera pallida Oberlangen (Ober) and Chavornay (Chav) in the roots of the susceptible cv. ‘Desiree’ (Des) and resistant cv. ‘Seresta’ (Ser) potato cultivars 49 days after inoculation. Four plants (n  = 4) of each nematode-cultivar combination were sampled and J2s enumerated at different days post inoculation in experiments 1 and 2. The vertical bars represent the standard error of the mean.
Number of second-stage juveniles (J2s) of Globodera pallida Oberlangen (Ober) and Chavornay (Chav) in the roots of the susceptible cv. ‘Desiree’ (Des) and resistant cv. ‘Seresta’ (Ser) potato cultivars 49 days after inoculation. Four plants (n  = 4) of each nematode-cultivar combination were sampled and J2s enumerated at different days post inoculation in experiments 1 and 2. The vertical bars represent the standard error of the mean.

Figure 3:

Numbers of male nematodes of Globodera pallida Oberlangen (Ober) and Chavornay (Chav) in the roots and soils of the susceptible cv. ‘Desiree’ (Des) and the resistant cv. ‘Seresta’ (Ser) potato cultivars 56 days after inoculation. Four plants (n  = 4) in each treatment were sampled and the males enumerated at different days post inoculation in experiments 1 and 2. The vertical bars represent the standard error of the mean.
Numbers of male nematodes of Globodera pallida Oberlangen (Ober) and Chavornay (Chav) in the roots and soils of the susceptible cv. ‘Desiree’ (Des) and the resistant cv. ‘Seresta’ (Ser) potato cultivars 56 days after inoculation. Four plants (n  = 4) in each treatment were sampled and the males enumerated at different days post inoculation in experiments 1 and 2. The vertical bars represent the standard error of the mean.

Figure 4:

Numbers of females of Globodera pallida Oberlangen (Ober) and Chavornay (Chav) on the roots of the susceptible cv. ‘Desiree’ (Des) and the resistant cv. ‘Seresta’ (Ser) potato cultivars. Four plants (n = 4) in each treatment were sampled and females enumerated at different days post inoculation in experiments 1 and 2. The vertical bars represent the standard error of the mean.
Numbers of females of Globodera pallida Oberlangen (Ober) and Chavornay (Chav) on the roots of the susceptible cv. ‘Desiree’ (Des) and the resistant cv. ‘Seresta’ (Ser) potato cultivars. Four plants (n = 4) in each treatment were sampled and females enumerated at different days post inoculation in experiments 1 and 2. The vertical bars represent the standard error of the mean.

Figure 5:

Mean reproduction factor ± standard error of Globodera pallida Oberlangen and Chavornay on 10 potato cultivars with different levels of resistance (n = 10). The standard error bars with ns were not significantly different at P ≤ 0.05).
Mean reproduction factor ± standard error of Globodera pallida Oberlangen and Chavornay on 10 potato cultivars with different levels of resistance (n = 10). The standard error bars with ns were not significantly different at P ≤ 0.05).

Figure 6:

Means cyst diameter ± standard error of avirulent and virulent populations of Globodera pallida (n  = 150). Standard error bars with a common letter are not significantly different at P ≤ 0.05.
Means cyst diameter ± standard error of avirulent and virulent populations of Globodera pallida (n  = 150). Standard error bars with a common letter are not significantly different at P ≤ 0.05.
DOI: https://doi.org/10.21307/jofnem-2019-079 | Journal eISSN: 2640-396X | Journal ISSN: 0022-300X
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Language: English
Page range: 1 - 13
Submitted on: Jul 23, 2019
Published on: Dec 5, 2019
Published by: Society of Nematologists, Inc.
In partnership with: Paradigm Publishing Services
Publication frequency: 1 issue per year
Keywords:
Biology,
Hatching,
Life history traits,
Pathotype,
Resistance,
Virulence selection
Related subjects:
Life sciences,
Life sciences, other

© 2019 James M. Mwangi, Björn Niere, Maria R. Finckh, Stefan Krüssel, Sebastian Kiewnick, published by Society of Nematologists, Inc.
This work is licensed under the Creative Commons Attribution 4.0 License.

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