Search

The article describes Bond CL hard red winter wheat cultivar, which was developed by the Colorado Agricultural Experiment Station. Bond CL was released to seed producers in August 2004 based on its resistance to the original North American biotype, tolerance to imazamox and adaptation to dryland production in eastern Colorado. It is a doubled-haploid line developed using the wheat X maize hybridization method from the cross Yumar. And Bond CL contained a patented herbicide tolerance trait owned by BASF Corp. that confers tolerance to imidazolinone herbicides.

The article describes Protection hard red winter wheat cultivar, which was developed by the Colorado Agricultural Experiment Station. Protection was released to seed producers in August 2004 based on its tolerance to imazamox herbicide, competitive yield and improved bread baking quality. It is an awned, bronze-chaffed and early-maturing semidwarf hard red winter wheat that matures early. On the basis of field evaluations under natural infection in Colorado, Protection is moderately resistant to stem rust, susceptible to leaf rust, and resistant to stripe rust.

The PI 386148 triticale from Russia is among the highest resistant line to the Russian wheat aphid (RWA) (Diuraphis noxia (Mordvilko)). This triticale line was used as the male parent in crosses with Lamar wheat (Triticum aestivum L.). The F1 plants were backcrossed to Lamar wheat. The progenies were tested for RWA biotype 1 reaction for at least eight backcross and selfing generations. Five lines from these selections were identified for their resistance to the RWA and their seeds were increased for agronomic and other characterizations. Molecular and cytological analyses of these lines were performed using genomic in situ hybridization and rye chromosome-specific microsatellites markers. Three lines were cytologically stable and carried a pair of rye (Secale strictum (C. Presl) C. Presl) chromosomes as disomic addition lines of 1R. One line was unstable and showed a moderate level of mixoploidy with monosomic additions of 1R. Duplication of rye chromosome 1R was also identified. No wheat-rye chromosome interchange was detected, suggesting little homology between S. strictum and T. aestivum chromosomes. Specific microsatellite primers were used to identify the rye chromosomes present in each line. One rye chromosome, 1R, from the donor species contains genes for RWA resistance. Grain yield and test weight of three of the lines were similar to some adapted released wheat varieties under stress conditions. [ABSTRACT FROM AUTHOR]

This article presents information on the registration of Hatcher wheat. Hatcher hard red winter wheat was developed by the Colorado Agricultural Experiment Station and released to seed producers in August 2004. Hatcher was released based on its resistance to the original North American biotype, designated as Biotype 1 of the Russian wheat aphid, and its adaptation to nonirrigated production in eastern Colorado and the west-central Great Plains. Hatcher was named in honor of the late E.L. Shug Hatcher, a former Colorado Wheat Industry leader who farmed near Lamar, Colorado. Hatcher is an awned, white-chaffed, medium maturity, semidwarf hard red winter wheat. Hatcher has medium maturity, 144 d to heading from January 1, and is 4 d later than Prairie Red and 1 d later than Yumar and Ankor. Plant height of Hatcher is short, and is 1.5 cm shorter than Prairie Red and 4.1 cm shorter than Yumar and Ankor. Coleoptile length of Hatcher is shorter than that of Prairie Red and Ankor but longer than that of Yumar. Shattering tolerance of Hatcher is good, slightly less than Ankor but better than Prairie Red and Yumar.