A woman has gone on trial accused of murdering her wheelchair-bound husband by setting fire to their bedroom.
Beverly Dalziel, 47, has pleaded not guilty at a hearing in the South Australian Supreme Court.
Her husband Charles, 67, died in the blaze at Barmera in the Riverland in August 2012.
Opening the case, prosecutor Emma Wildman said an almost-empty petrol can and a cigarette lighter were found at the home in Langdon Terrace.
She said the couple often fought, sometimes physically, and the woman was heard threatening to kill him one day.
The court was told Dalziel will claim she was sleeping on the couch when the fire started and tried to put it out with buckets of water