Is annona from Latin annus or a PIE word for harvest?

[Swamp Thing]

It says here https://en.wikipedia.org/wiki/Annona_(mythology) that "annona" comes from the word "annus", i.e. Latin for "year".

OTOH, https://en.wiktionary.org/wiki/annona says it's from a PIE word that means harvest or crop.

Which etymology is true?

Also, "anna" in Sanskrit means grain -- so would that be cognate with annona? If the latter comes from "year" then this seems less likely.

 

[Bandersnatch]

The second one looks better sourced. The first has just a single non-linguistic reference throughout the article. Relating this to year might be just folk etymology - looks superficially similar and the meaning connection between year and harvest can be made if one squints a bit. Wikitionary gives completely unrelated PIE roots for annona and annus.