The goal came when Danny Murphy's corner was prodded goalwards by Grant Hanley and although the ball was cleared by Aaron Cresswell and ricocheted in off keeper Stephen Henderson, Rhodes looked to have got a touch before Cresswell cleared.
"He had the last touch on the ball before Cresswell tried to clear it and it's one of them," Appleton said.
"If you've got Hawk-Eye, it would be able to tell us if it was over the line or not from the clearance but it's difficult to tell when you look back on the DVD.
"But like I say, the last touch came from Jordan as it was heading towards the goal so I'm sure he'll get the reward."
If the goal is given to Rhodes it would mean he had scored in seven consecutive league games, equalling a club record set by Eddie Quigley in the 1954-55 season and Rovers are now just four points off a play-off place.
"We're not concerned about it at the minute," said Appleton. "If with six games to go, we're in and around it, maybe I'll allow myself to think we've got half a chance."