Pere Romeu says Barcelona showed their DNA after their dominant win over Real Madrid in the Women's Champions League quarter-final first leg.

Barca stormed to a 6-2 victory at Estadio Alfredo Di Stefano as they put one foot in the semi-finals.

Ewa Pajor netted twice, with Esmee Brugts, Irene Paredes, Vicky Lopez and Alexia Putellas also getting on the scoresheet as Barcelona recorded their 22nd victory in 23 all-time meetings with Madrid in all competitions (L1).

Linda Caicedo scored a brace for Madrid to give them a lifeline, including a wonderfully composed finish after a one-on-one with Cata Coll.

Barca were clinical, scoring with six of their seven shots on target, while they overperformed their 3.3 expected goals (xG) by a big distance.

It is Barcelona's biggest win in the competition this season since the opening matchday against Bayern Munich (7-1).

"I'm really pleased with the match we played," he said. "I'm really pleased with the performance.

"I'm really pleased because football is all about emotion and passion. They [Madrid] scored to make it 2-1, and in the very next move – a corner and a goal. That fills me with a great sense of pride.

"I think the moment when we conceded [making it 2-1], and then we scored, shows the competitive spirit this team has. It shows our DNA.

"This is something we need to keep up, and we want to prove it again on Sunday, then next Thursday."

For Madrid, it was a familiar result in a Clasico, as they struggled to create clear-cut chances.

They managed just six shots, though they did get four on target, and only accumulated 0.88 xG.

"Everything went wrong," Madrid head coach Pau Quesada said. "The team fell apart after the first goal.

"We then found ourselves 2-1 down, and it looked like we were making a comeback, but the next goal from a set piece finished us off.

"They were deserved victors. If you lose focus after conceding a goal against opponents like this, they'll run you ragged.

"The gap to Barca is what it is. They've got that extra gear, and we have to match it. On the day you don't, this is what happens to you."