I FAS North Florida Research and Education Center
 / Z 6Fj 1A Quincy, Florida
 Agr nomy and Plant Pathology Departments
I.C l. eeSr le, Florida
-/ ,/ Library
 Quincy NFREC Research Report NF-90-15 AP 1 in

 ATW 270 A Soft Red Win er Wr t .. fr the So then U.S.
 R.D. Barnett, Agronomist, 'iMn P.YL. PP9 AlhIerjfJgron mist,
 Gainesville, H.H. Luke, Plant Patholog--it,-Gainesvile, and
 A. R. Soffes, Agronomist, Quincy.

 ATW 270 is an early maturing soft red winter wheat developed by the
 University of Florida at the North Florida Research and Education Center at
 Quincy in cooperation with the Agronomy and Plant Pathology Departments in
 Gainesville. ATW 270 was tested experimentally as FL7927-G29 and is a full
 sister to Florida 303. It resulted from a cross made at Quincy, Florida, in
 1979, between a bronze chaffed sister of Florida 302 and Coker 797. ATW 270
 originated from a single plant selected in the F3 generation. It was grown as
 an F4 plant row and appeared to be uniform and stable. Yield performance
 evaluation began in the F generation. The line performed well in yield
 trials between 1984 and 1986. It was included in the Uniform Southern Soft
 Red Winter Wheat Nursery in 1988 and 1989. It was included in state variety
 trials in Georgia and South Carolina in 1987 and practically all southern
 states in 1988 and 1989.

 Exclusive rights to produce, market and distribute ATW 270 were granted to
 AgraTech Seeds, Inc., 244 Perimeter Center Parkway, N.E., P. O. Box 2210,
 Atlanta, Georgia 30301 (404/393-5410) in 1989. AgraTech Seeds, Inc., is a
 wholly owned subsidiary of Gold Kist, Inc., headquartered in Atlanta, Georgia.
 Application for plant variety protection has been filed with the USDA Plant
 Variety Office, specifying that seed of ATW 270 is to be sold by variety name
 only as a class of certified seed. A good supply of certified seed will be
 available for planting during 1990. All foundation and registered seed
 production will be in Florida, but certified seed will be produced throughout
 the market area.

 ATW 270 is awnless and has bronze chaff. It is several days later in
 maturity than the Coker 797 parent, but is about one week earlier than Florida
 302. It has short, broad leaves that are blue green in color, as compared to
 Florida 301 which is yellow green in color. ATW 270 has a fairly heavy
 "bloom" (white, waxy covering) on the leaves, stems, and heads. When grown
 under North Florida conditions, it is about three inches shorter than Florida
 302 at maturity. It produces high yields and has a good test weight. It has
 been tested for soft wheat quality, and has excellent milling and baking
 characteristics. When released, it had excellent resistance to leaf rust and
 powdery mildew. However, subsequently, some mildew-and a little leaf rust has
 been observed. It obtained most of its disease resistance from Florida 302.
 As Florida 302's disease resistance breaks down, so will AW 270's. It is
 susceptible to Hessian fly and wheat soil-borne mosiac virus.

 ATW 270 is uniform and stable. Less than 1% of the plants were rogued
 from the breeders seed field in 1988. It does contain several off-type
 plants. An occasional bearded, and an occasional white chaffed plant, may be
 found. Also an occasional taller plant may also occur. However, these
 off-type plants have occurred at less than 1% in subsequent generations.