Australasian Plant Pathology (2011) 40, 39-47

L.A. Smith, E.K. Dann, K.G. Pegg, A.W. Whiley, F.R. Giblin, V. Doogan and R. Kopittke (2011)
Field assessment of avocado rootstock selections for resistance to Phytophthora root rot
Australasian Plant Pathology 40 (1), 39-47
Abstract: Phytophthora root rot (PRR), caused by P. cinnamomi, is a primary constraint on avocado productivity in Australia. Numerous field trials at sites in northern NSW and southern QLD have demonstrated significant variation in tree health amongst commercial rootstocks and recently selected material, grown under high PRR disease pressure. Selections 'SHSR-02', 'SHSR-04', ungrafted 'Hass' (rooted cuttings from clonal propagation) and the commercial rootstock 'Dusa™' were significantly healthier over time than other rootstocks, many of which died during the course of the trials. 'Reed' was consistently highly susceptible. In many cases superior tree health was associated with increased tree height and trunk girth. The trials also clearly demonstrate the negative impact of Phytophthora root rot on establishment of new avocado production blocks, and the importance of identifying and selecting avocado rootstock material that can withstand high P. cinnamomi disease pressure.
(The abstract is excluded from the Creative Commons licence and has been copied with permission by the publisher.)
Link to article at publishers website
Database assignments for author(s): Elizabeth K. Dann

Research topic(s) for pests/diseases/weeds:
resistance/tolerance/defence of host

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Pest and/or beneficial records:

Beneficial	Pest/Disease/Weed	Crop/Product	Country	Quarant.
	Phytophthora cinnamomi	Avocado (Persea americana)	Australia (South+SE)
	Phytophthora cinnamomi	Avocado (Persea americana)	Australia (NT+QLD)