Defra - Department for Environment, Food and Rural Affairs.

Science Search

Science and Research Projects

Return to Science Search homepage   Return to Project List

Tomato verticillium wilt - investigating the cause of outbreaks in Ve-resistant cultivars - HH3211SPC

The objective of the research is to determine, under controlled conditions, the ability of a range of isolates of Verticillium albo-atrum and Verticillium dahliae to infect and cause symptoms in tomato varieties with or without the Verticillium wilt (Ve) resistance gene. Observations in UK tomato crops over the last 5 years indicate increasing occurrence of resistance-breaking strain(s) of V.albo –atrum capable of causing wilt in Ve-resistant varieties. Knowledge of varietal and rootstock differences in susceptibility, if any, to Verticillium would enable growers to select varieties or rootstocks better able to avoid disease or at least tolerate infection and thereby minimise the need to apply carbendazim root drenches to manage the disease. This work is in accordance with the Governments policy to minimise pesticide usage. The results would be used (a) to provide growers with a more informed choice on varietal selection (b) to provide the research community with a better understanding of tomato – verticillium interactions.
(1) Determine the susceptibility of a range of commercially available tomato varieties and rootstocks to isolates of V. albo-atrum and V.dahliae recently obtained from wilt-affected Ve-resistant tomatoes (ADAS).
(2) Determine whether isolates of V.albo-atrum and V.dahliae obtained from Ve-resistant tomatoes are distinct at a molecular level from other isolates (HRI).
Project Documents
• Final Report : Tomato verticillium wilt - investigating the cause of outbreaks in Ve-resistant cultivars   (1047k)
Time-Scale and Cost
From: 2001

To: 2002

Cost: £25,101
Contractor / Funded Organisations
Crop Diseases              
Protected Cropping              
Fields of Study