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Dynamics of the impacts of Pratylenchus penetrans on Gisela® cherry rootstocks

Thomas Forge
Thomas Forge
, 
Denise Neilsen
Denise Neilsen
, 
Gerry Neilsen
Gerry Neilsen
 et 
Suzanne Blatt
Suzanne Blatt
   | 15 avr. 2019
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Article Category: Arts & Humanities
Publié en ligne: 15 avr. 2019
Pages: 1 - 10
Reçu: 16 nov. 2018
DOI: https://doi.org/10.21307/jofnem-2019-008
© 2019 Thomas Forge et al., published by Sciendo
This work is licensed under the Creative Commons Attribution 4.0 International License.

Figure 1

Population densities of Pratylenchus penetrans (per kg soil, roots inclusive) under Gi.3, Gi.5, and Gi.6 trees during the course of the study, at the Summerland, British Columbia (BC, solid lines) and Kentville, Nova Scotia (NS, dashed lines) sites. Error bars represent one standard deviation above the minimum value at each date.
Population densities of Pratylenchus penetrans (per kg soil, roots inclusive) under Gi.3, Gi.5, and Gi.6 trees during the course of the study, at the Summerland, British Columbia (BC, solid lines) and Kentville, Nova Scotia (NS, dashed lines) sites. Error bars represent one standard deviation above the minimum value at each date.

Figure 2

Temporal dynamics of the biomass of fine roots (<2 mm diameter) (g dry root/kg dry soil) under Gi.3, Gi.5, and Gi.6 trees during the course of the study, at the Summerland, British Columbia (BC, solid lines) and Kentville, Nova Scotia (NS, dashed lines) sites.
Temporal dynamics of the biomass of fine roots (<2 mm diameter) (g dry root/kg dry soil) under Gi.3, Gi.5, and Gi.6 trees during the course of the study, at the Summerland, British Columbia (BC, solid lines) and Kentville, Nova Scotia (NS, dashed lines) sites.

Figure 3

Relationships between running average Pratylenchus penetrans population densities and trunk cross-sectional areas (TCSA) for three different cherry tree training systems on Gisela 3 rootstock from 2013 through 2016 at the Summerland, British Columbia site. Training systems: KGB, Kym Greene Bush; TSA, Tall Spindle Axe; UFO, Upright Fruiting Offshoots.
Relationships between running average Pratylenchus penetrans population densities and trunk cross-sectional areas (TCSA) for three different cherry tree training systems on Gisela 3 rootstock from 2013 through 2016 at the Summerland, British Columbia site. Training systems: KGB, Kym Greene Bush; TSA, Tall Spindle Axe; UFO, Upright Fruiting Offshoots.

Figure 4

Relationships between running average Pratylenchus penetrans population densities and trunk cross-sectional areas (TCSA) for three different cherry training systems on Gisela 3 (left), Gisela 5 (center), and Gisela 6 (right) rootstocks at the end of 2017 at the Summerland, British Columbia site. Training systems: KGB, Kym Greene Bush; TSA, Tall Spindle Axe; UFO, Upright Fruiting Offshoot.
Relationships between running average Pratylenchus penetrans population densities and trunk cross-sectional areas (TCSA) for three different cherry training systems on Gisela 3 (left), Gisela 5 (center), and Gisela 6 (right) rootstocks at the end of 2017 at the Summerland, British Columbia site. Training systems: KGB, Kym Greene Bush; TSA, Tall Spindle Axe; UFO, Upright Fruiting Offshoot.

Main-factor effects (averaged over sample dates) of Gisela 3 (Gi.3), Gisela 5 (Gi.5), and Gisela 6 (Gi.6) rootstocks and training systems (KGB, Kym Greene Bush; TSA, Tall Spindle Axe; UFO, Upright Fruiting Offshoot) on P. penetrans population densities in soil alone (Pp/kg soil), roots (Pp/g dry root), and soil and roots combined (Pp/kg soil with roots), at Summerland, British Columbia, and Kentville, Nova Scotia sites. For both sites and all nematode population parameters, sample date had a significant main-factor effect but there were no significant sample date × fixed factor interactions. Values labelled with different letters are significantly different (paired t-tests, p < 0.05).

Summerland, BC Kentville, NS
Pp/kg soil Pp/g root Pp/kg soil with roots Pp/kg soil Pp/g root Pp/kg soil with roots
Rootstock (RS)
Gi.3 140 104a 169 960 507 1,149
Gi.5 139 67b 153 1,029 551 1,239
Gi.6 127 81ab 148 829 398 958
Training system (TS)
KGB 131b 91 150b 947 470b 1,106
TSA 121c 73 151b 1,079 624a 1,299
UFO 153a 89 168a 792 359b 935
ANOVA P-values
RS 0.871 0.077 0.21 0.743 0.381 0.600
Training 0.003 0.784 0.06 0.672 0.055 0.267
RS × TS 0.138 0.436 0.41 0.914 0.730 0.769
eISSN:
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Langue:
Anglais
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Volume Open
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