DOHA - The head of Qatar Airways voiced scepticism on Tuesday over an aviation industry target of achieving net-zero emissions by 2050, citing inadequate capacity for sustainable aviation fuel and alternative hydrogen technology that remains in its infancy.

"I don't think that we will be able to achieve net-zero emissions by 2050. Everybody's talking about it but let us be realistic," Chief Executive Akbar Al Baker told the Qatar Economic Forum, organised by Bloomberg.

(Reporting by Andrew Mills, Editing by Tim Hepher)