Abstract Detail

Horticulture

Tesfaendrias, Michael [1], Allen, R. [2], Maund, C. [3], Tremblay, R.J.A. [4].

Strawberry Decline Disease in New Brunswick, Canada.

Strawberry decline disease (SDD) is caused by a combination of two or more viruses infecting the strawberry (Fragaria x ananassa Duchesne) plant resulting in reduction of yield and fruit quality. In 2013, the New Brunswick Department of Agriculture, Aquaculture and Fisheries detected the presence of two strawberry viruses, strawberry mild yellow edge virus (SMYEV), strawberry mottle virus (SMoV) and the strawberry aphid (Chaetosiphon fragaefolli (Cockerell)) which transmits these viruses, in New Brunswick (NB). The detection and identification of viruses was done with sets of primers for 5 viruses, using reverse transcription-PCR. A more extensive survey was conducted in 2014 to determine the extent and degree of virus-related SDD on NB farms. Strawberry leaf samples were collected and tested for SMoV, SMYEV, strawberry vein banding virus (SVBV), strawberry crinkle virus (SCV) and strawberry pallidosis associated virus (SPaV). Of the 36 first-year fruiting fields (2013 plantings) surveyed in June and July, multiple strawberry viruses were identified in samples from 34 fields. Of the 16 newly planted fields (2014 plantings) surveyed in October, multiple viruses were detected in samples from 9 fields. In both first-year fruiting fields and newly planted fields, the most common virus complex identified was SMYEV and SMoV. Wild strawberry (Fragaria vesca L.) samples collected from six sites had relatively low levels of virus inoculum. Only one of the 72 samples tested positive for multiple viruses. Survey results were used to develop best management practices for SDD management in New Brunswick.

1 - NB Deprt. of Agriculture, Aquaculture and Fisheries, P.O.Box 6000, Fredericton, New Brunswick, E3B 5H1, Canada
2 - NB Depart, of Agri., Aquaculture and Fisheries, P.O.Box 6000, Fredericton, New Brunswick, E3B 5H1, Canada
3 - NB Dept. of Agric., Aqua. and Fisheries, P.O.Box 6000, Fredericton, New Brunswick, E3B 5H1, Canada
4 - NB Dept. of agric., Aquacu. and Fisheries, P.O.Box 6000, Fredericton, New Brunswick, E3B 5H1, Canada

Keywords:
Strawberry virus.

Presentation Type: Poster:Posters for Topics
Session: P
Location: Hall D/The Shaw Conference Centre
Date: Monday, July 27th, 2015
Time: 5:30 PM
Number: PHO006
Abstract ID:782
Candidate for Awards:None