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Stine Seed tests glyphosate-resistance

Stine Seed Co. has announced the development of a new glyphosate-tolerant technology which it plans to market as Glytol. Soybean varieties containing the technology could be on the market by the end of the decade, depending on the pace of EPA registration.

Stine owns a patent on the technology and is applying for registration in the United States. Soybean lines with the technology were on display at a recent field day at the company's breeding station in Marion, Ark.

“There are a number of glyphosate-tolerant events coming from a number of sources,” said Stine CEO Harry Stine, when asked about the specific source of the tolerance. “We have access to most of these sources because we work with most of the companies supplying them. Because of registration problems, we can't comment any further on it.”

Stine said some of the glyphosate-tolerance being considered is similar to current Roundup Ready technology and some is not. “The registration process may make the difference on what comes out the end.”

“Right now, we're evaluating the technology's performance in the field, seeing how soybean lines react to the herbicides,” said Stine plant breeder and station manager Brian Cornelious. “This trial is one of 16 trials from Canada into the southern United States.”

The technology could end up in Stine-branded products, but also in seedstock developed by Stine and licensed to other seed companies.

The company initiated a breeding program in the Mid-South two years ago and released a handful of varieties in 2005. According to Cornelious, the company will develop and market soybean varieties adaptable from Texas to the Carolinas, most containing the Roundup Ready technology.

According to Stine, “It seemed logical since we had adaptable material to expand marketing into the southern geography. Historically, we've been known for high-yielding lines. By definition, you can't have high-yielding varieties unless they're tolerant to the primary disease problems of a given geography.”

Stine varieties have been placed in university trials in Arkansas, Mississippi, Louisiana, Tennessee and Texas.

The company was founded by Bill Stine in the 1940s. By the 1990s, Stine grew to 1,700 dealers in 15 Midwest states, marketing in excess of 1 million units of soybean seed. It also markets corn and soft red winter wheat.

The company plans to offer six soybean varieties with Roundup Ready technology in 2006. Descriptions are provided by the seed company.

3832-4 — This 3.8 maturity soybean performs well on a variety of soil types. Rps1k multi-race Phytophthora root rot resistance, above-average sudden death syndrome tolerance, moderate SCN resistance.

4422-4 — A moderately short soybean plant with 4.3 to 4.4 maturity. Excellent emergence and standability, exceptional yield, moderate SCN resistance, moderate resistance to stem canker, very good tolerance to frogeye leaf spot, very good Phytophthora root rot tolerance.

4532-4 — The 4.5 maturity soybean has very good emergence and standability, moderate SCN resistance, moderate stem canker resistance, above-average sudden death syndrome tolerance, moderately tall.

4842-4 — This moderately tall, 4.7 maturity plant has very good Phytophthora root rot tolerance, high SCN resistance, above-average sudden death syndrome tolerance, high stem canker resistance, and works well in clay soils.

5142-4 — This 4.9 to 5.0 maturity variety has very good Phytophthora root rot tolerance, above-average sudden death syndrome tolerance, high SCN resistance, high stem canker resistance, above-average tolerance to frogeye leafspot and works well in clay soils.

5502-4 — This 5.4 maturity soybean has excellent emergence and very good standability with excellent yield potential.

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