Editor's Note: This article was originally published on Real Money at 11:15 a.m. on May 12.

Monsanto (MON) shares rocketed 11% in Thursday-morning trading on reports that the world's largest seed producer could be targeted by German chemical giant Bayer (BAYRY) with a takeover offer.

Meanwhile, shares of Bayer -- which manufactures a variety of herbacide and insecticide brands such as Liberty, Belt and Movento -- dipped about 5% on German exchanges after Bloomberg reported the chemical giant has engaged advisors in preliminary discussions about making an offer for Monsanto.

Monsanto's market cap climbed to roughly $43 billion in Thursday morning trading vs. a $78.5 billion market cap at Bayer.

But such a potential tie-up, following China National Chemical's $43 billion bid for Syngenta (SYT) in February, would still pale in comparison to the agricultural seed giant that would be produced if Dow Chemical (DOW) and DuPont (DD - Get Report) can see their $130 billion deal cross the finish line, according to Real Money's Jim Cramer. Dow Chemical is a stock held in Jim Cramer's Action Alerts PLUS charitable trust.

"Don't forget that if Dow and DuPont merge that the combined company will be the No. 1 seed company," Cramer said in a Thursday email. "This would be a terrific combination that could catch the seed business at the bottom of the cycle."

Dow Chemical is a holding in Jim Cramer's Action Alerts PLUS Charitable Trust Portfolio. Want to be alerted before Cramer buys or sells DOW? Learn more now.

Most recently, Dow acquired the seed business of Cooperativa Central de Pesquisa Agrícola for $169 million last year, with the remaining $24 million paid this year, as part of the Michigan-based chemical giant's quest to build out its AgroScience's share in the soybean market. Dow's Agricultural Sciences sales clocked in at $1.65 billion in the first quarter, down 12% year over year.

Meanwhile, DuPont attributed much of its 6% decline in net total sales for the quarter, which amounted to $7.4 billion, to "reduced demand for crop protection insecticide products and soybean seeds," according to its quarterly SEC filing.

DuPont and Monsanto shares are down 13% and 15%, respectively, over the past 12 months, while Dow stock has ticked up 1% over the period.