Scottish First Minister Humza Yousaf has accused the UK Government of sabotaging a pilot recycling initiative by excluding glass.
Glass bottles were a key part of Scottish proposals for the deposit-return scheme (DRS), due to start north of the border in March.
The UK Government has now agreed for the controversial initiative to go ahead in Scotland, but said it wanted to ensure it aligned with plans in other nations.
The move to exclude glass casts doubt over whether the Scottish scheme can go ahead.
Mr Yousaf told the BBC: "Not only is it bad in terms of devolution and self government, it's really poor for the environment. If we don't include glass that's 600million bottles that won't be moved from our streets, our beaches and our parks."
But Scottish Tory MSP Maurice Golden said the situation was a mess of the Scottish Government's own making.
Picking a fight
He said: "Rather than trying to pick a fight, the SNP and Greens must now accept this help to create a deposit-return scheme that actually works for the people of Scotland."
The Scottish Government is expected to take a couple of weeks to crunch the numbers before making a decision.
The scheme is aimed at increasing the number of single-use drinks bottles and cans that are recycled.
It means 20p would be added to the price of a single-use drinks container, which will be refunded to people who return it.
The DRS was originally due to begin in August, but was delayed after concerns were voiced.
Some firms feared it would place extra costs and other burdens on them at a time when they are already struggling.
UK initiatives
Similar UK initiatives are expected in 2025.
Because Scottish ministers wanted to introduce their scheme sooner, they had to seek an exemption from the Internal Market Act.
Scottish Greens co-leader Lorna Slater, who had been driving the introduction of the DRS, said that the decision to exclude glass meant she would have to look "very seriously" at the viability of the project.
The British Soft Drinks Association says the "only viable option now" was for a UK-wide initiative to be launched across all four nations in 2025.
Dougal Sharp, founder of Edinburgh brewer Innis and Gunn, said uncertainty over DRS made things "brutal and impossible to plan".