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

James M. Mwangi
James M. Mwangi
, 
Björn Niere
Björn Niere
, 
Maria R. Finckh
Maria R. Finckh
, 
Stefan Krüssel
Stefan Krüssel
 y 
Sebastian Kiewnick
Sebastian Kiewnick
   | 05 dic 2019
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Article Category: Arts & Humanities
Publicado en línea: 05 dic 2019
Páginas: 1 - 13
Recibido: 23 jul 2019
DOI: https://doi.org/10.21307/jofnem-2019-079
© 2019 James M. Mwangi et al., published by Sciendo
This work is licensed under the Creative Commons Attribution 4.0 International License.

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.
eISSN:
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