Abstract
This study investigated the susceptibility of the most common rootstock
and scion varieties used in New Zealand grapevine nurseries and
vineyards to Botryosphaeriaceae
species. A total of six rootstocks and six scion varieties were
inoculated with mycelium of three isolates each of the most common Botryosphaeriaceae species (Neofusicoccum luteum, N. parvum and N. australe)
recovered from New Zealand grapevine nurseries. Overall results showed
that all isolates produced necrotic lesions on all varieties but
susceptibility varied significantly (P < 0.001)
with 5C and SO4 being the most susceptible of the rootstock varieties,
and Merlot and Pinot noir being the most susceptible of the scions.
Pathogenicity also varied significantly (P < 0.001) between species with N. parvum
being the most virulent among three species tested. This study has
further shown that different isolates of the three species have
different levels of virulence providing evidence that these pathogens
are genetically diverse. These results have significant implications for
the New Zealand grapevine industry as the use of resistant varieties is
not a possible option at present since none of the common varieties are
resistant to these pathogens.
Original language | English |
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Pages (from-to) | 25-31 |
Number of pages | 7 |
Journal | Australasian Plant Pathology |
Volume | 43 |
Issue number | 1 |
Early online date | May 2013 |
DOIs | |
Publication status | Published - Jan 2014 |