Susceptibility of fraser, canaan, and nordmann fir to root rot incited by Phytophthora cactorum and Phytophthora drechsleri

Benjamin K. Hoover, Ricky M. Bates

Research output: Contribution to journalArticle

4 Citations (Scopus)

Abstract

The susceptibility of fraser fir (Abies fraseri), canaan fir (A. balsamea var. phanerolepis), and nordmann fir (A. nordmanniana) to phytophthora root rot (PRR) incited by Phytophthora cactorum or P. drechsleri was assessed in two experiments in central Pennsylvania. In an 8-week greenhouse study, seedlings and transplants growing in soilless substrate were inoculated with Phytophthora in flooded and non-flooded settings. In an 8-week outdoor study conducted in raised planting boxes filled with soil, transplants were inoculated with Phytophthora species in well-drained and poorly drained soil. Based on foliar disease ratings, mortality rates, and dry shoot and root weights, differences in susceptibility to P. cactorum and P. drechsleri existed between these true fir (Abies) species. Fraser fir was very susceptible to P. cactorum and P. drechsleri. Canaan fir had strong resistance to P. cactorum and P. drechsleri in well-drained settings but was susceptible in poorly drained settings. Nordmann fir had very strong resistance to P. cactorum and P. drechsleri in both well-drained and poorly drained settings.

Original languageEnglish (US)
Pages (from-to)44-50
Number of pages7
JournalHortTechnology
Volume23
Issue number1
StatePublished - Feb 1 2013

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Phytophthora drechsleri
Abies nordmanniana
Abies fraseri
Phytophthora cactorum
root rot
Abies
Phytophthora
box planting
poorly drained soils
Abies balsamea
foliar diseases
greenhouses
shoots
seedlings
soil

All Science Journal Classification (ASJC) codes

  • Horticulture

Cite this

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title = "Susceptibility of fraser, canaan, and nordmann fir to root rot incited by Phytophthora cactorum and Phytophthora drechsleri",
abstract = "The susceptibility of fraser fir (Abies fraseri), canaan fir (A. balsamea var. phanerolepis), and nordmann fir (A. nordmanniana) to phytophthora root rot (PRR) incited by Phytophthora cactorum or P. drechsleri was assessed in two experiments in central Pennsylvania. In an 8-week greenhouse study, seedlings and transplants growing in soilless substrate were inoculated with Phytophthora in flooded and non-flooded settings. In an 8-week outdoor study conducted in raised planting boxes filled with soil, transplants were inoculated with Phytophthora species in well-drained and poorly drained soil. Based on foliar disease ratings, mortality rates, and dry shoot and root weights, differences in susceptibility to P. cactorum and P. drechsleri existed between these true fir (Abies) species. Fraser fir was very susceptible to P. cactorum and P. drechsleri. Canaan fir had strong resistance to P. cactorum and P. drechsleri in well-drained settings but was susceptible in poorly drained settings. Nordmann fir had very strong resistance to P. cactorum and P. drechsleri in both well-drained and poorly drained settings.",
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Susceptibility of fraser, canaan, and nordmann fir to root rot incited by Phytophthora cactorum and Phytophthora drechsleri. / Hoover, Benjamin K.; Bates, Ricky M.

In: HortTechnology, Vol. 23, No. 1, 01.02.2013, p. 44-50.

Research output: Contribution to journalArticle

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