New York: A combination of Monsanto Co. and Syngenta AG would set the stage for even more mergers and acquisitions.

Monsanto has approached Syngenta about a takeover that would create a giant in the market for seeds and crop chemicals with more than $30 billion in revenue. Getting a deal approved by regulators won’t be easy — and may not happen at all. To address antitrust issues and help its case, Monsanto has planned for a deal to include a sale of parts of the combined business, a person familiar with the matter has said.

The biggest concerns may be tied to what would be an unprecedented market share in soybeans and corn seeds for the combined company. Syngenta’s operations in those areas would appeal to a range of buyers from Dow Chemical Co. to BASF SE and Bayer AG, said Colin Isaac of Atlantic Equities LLP. Even private-equity firms could look.

Syngenta’s “seed businesses would be pretty easy to sell for good multiples,” Isaac, a London-based analyst, said in a phone interview. “People are always looking to buy share.”

DuPont Co. could also be a buyer of any assets that are divested, said Bill Selesky, an analyst at Argus Research Co.

Dupont-Dow

There is another possibility: At Dow, activist investor Dan Loeb once pushed for a break-up, and Chief Executive Officer Andrew Liveris has suggested the company is open to divesting its agriculture unit. Monsanto becoming a much stronger competitor could be a catalyst for the $60 billion company to more seriously consider taking that step, said James Sheehan of SunTrust Banks Inc. That segment would be prime pickings for DuPont and its Pioneer seed business, he said.

“That’s the deal that I’ve always expected to happen,” Isaac of Atlantic Equities said in a phone interview. “It’s attractive for Pioneer and it’s attractive for Dow in terms of focusing their portfolio on the chemicals business and raising a lot of cash.”

If Dow doesn’t want to sell directly to DuPont, both companies could combine their agriculture businesses in a separate entity, Argus’ Selesky said.