Introgression of an imidazolinone-resistance gene from winter wheat (Triticum aestivum L.) into jointed goatgrass (Aegilops cylindrica Host)

2006 ◽  
Vol 114 (1) ◽  
pp. 177-186 ◽  
Author(s):  
Alejandro Perez-Jones ◽  
Carol A. Mallory-Smith ◽  
Jennifer L. Hansen ◽  
Robert S. Zemetra
Keyword(s):  
Triticum Aestivum ◽  
Winter Wheat ◽  
Resistance Gene ◽  
Triticum Aestivum L ◽  
Aegilops Cylindrica ◽  
Jointed Goatgrass ◽  
Imidazolinone Resistance

Sampling Wheat (Triticum aestivum) at the Elevator for Jointed Goatgrass (Aegilops cylindrica)

1994 ◽  
Vol 8 (1) ◽  
pp. 64-68 ◽  
Author(s):  
Drew J. Lyon ◽  
John A. Smith ◽  
David D. Jones
Keyword(s):  
Triticum Aestivum ◽  
Winter Wheat ◽  
Geographic Distribution ◽  
Field Survey ◽  
Mail Survey ◽  
Wheat Grain ◽  
Aegilops Cylindrica ◽  
Jointed Goatgrass

Winter wheat grain contaminated with jointed goatgrass joints is often discounted as much as 20% by grain buyers. A mail survey to Nebraska farmers in 1984 identified jointed goatgrass as one of the ten worst weed problems in winter wheat, but a field survey to the same area in 1986 found it in less than 1% of surveyed fields. The objective of this survey was to map the geographic distribution and severity of jointed goatgrass contaminating winter wheat grain in western Nebraska. Jointed goatgrass was found in 25, 29, and 20% of all wheat samples collected in 1990, 1991, and 1992, respectively. Nebraska counties bordering Colorado were found to have the highest percentage of wheat samples contaminated with jointed goatgrass joints, ranging from 23% in Cheyenne county in 1992 to 61% in Keith county in 1991.

Jointed Goatgrass (Aegilops cylindrica Host) × Wheat (Triticum aestivum L.) Hybrids

Crop Science ◽  
2002 ◽  
Vol 42 (6) ◽  
pp. 1863-1872 ◽  
Author(s):  
L. A. Morrison ◽  
O. Riera-Lizarazu ◽  
L. Crémieux ◽  
C. A. Mallory-Smith
Keyword(s):  
Triticum Aestivum ◽  
Triticum Aestivum L ◽  
Aegilops Cylindrica ◽  
Jointed Goatgrass

Competitive Relationships Among Winter Wheat (Triticum aestivum), Jointed Goatgrass (Aegilops cylindrica), and Downy Brome (Bromus tectorum)

Weed Science ◽  
1988 ◽  
Vol 36 (4) ◽  
pp. 479-486 ◽  
Author(s):  
Gwen F. Fleming ◽  
Frank L. Young ◽  
Alex G. Ogg
Keyword(s):  
Triticum Aestivum ◽  
Soil Moisture ◽  
Winter Wheat ◽  
Bromus Tectorum ◽  
Relative Yield ◽  
Growth Chamber ◽  
Downy Brome ◽  
Replacement Series ◽  
Aegilops Cylindrica ◽  
Jointed Goatgrass

In three replacement series experiments, winter wheat (Triticum aestivumL.), jointed goatgrass (Aegilops cylindricaHost. #3AEGCY), and downy brome (Bromus tectorumL. # BROTE) were paired in all possible combinations to determine competitive relationships during vegetative growth. Under growth chamber conditions of ample fertility and soil moisture and day/night temperatures of 18/10 C, relative yield totals for the three species were similar, indicating that they compete for the same resources. Both winter wheat and jointed goatgrass had greater plant growth and higher relative crowding coefficients than downy brome, which indicated a hierarchy of relative competitiveness of winter wheat > jointed goatgrass >> downy brome. In other growth chamber studies, winter wheat was slightly more competitive than jointed goatgrass regardless of fertility levels. Winter wheat was the superior competitor at 18/10 C and −33 kPa (soil moisture), whereas jointed goatgrass was superior at 27/10 C and −300 kPa, conditions that are frequently encountered in the Pacific Northwest.

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