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Monsanto introduces new YieldGard technology

Monsanto announced this week that YieldGard VT will be the name of its new, second-generation insect control technology.

The initial products will be YieldGard VT Rootworm/RR2 and YieldGard VT Triple, which will add the YieldGard Corn Borer trait via conventional breeding. Both are targeted for a limited introduction in 2007. Currently, the family of YieldGard products is planted on more than 50 million acres.

Dave Rhylander, Monsanto director of traits, says YieldGard VT Rootworm/RR2 represents the next generation of YieldGard stacked traits, developed through advanced Vector-Stack Transformation, or "VecTran" technology upon which its name is based.

The traditional approach for creating stacked hybrids has been through breeding. A gene gun has typically been used to insert individual traits into separate plants, and then the plants have been crossbred to produce a new hybrid containing the multiple traits.

Rhylander says VecTran utilizes a cleaner, more natural agrobacterium- mediated insertion process. Two or more genes containing the desired traits are delivered through a single insertion process into the plant chromosome, on which optimal performance of the stacked traits is achieved. The result is a stacked-trait hybrid with a promoter of the rootworm protection gene distributed throughout the root system.

Rhylander says there will be a variety of new YieldGard VT products that growers can expect to see over the next several years, including YieldGard VT Triple Pro, now being tested in regulated field trials, which is a stacked combination of YieldGard VT Rootworm/RR2 plus new second-generation YieldGard Corn Borer.

Monsanto announced this week that YieldGard VT will be the name of its new, second-generation insect control technology.

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