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Annual Progress Report on Malting Barley Research March, 2002

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Bar<strong>on</strong>esse alleles in the 3HL target regi<strong>on</strong>, but yields significantly less than Bar<strong>on</strong>esse.<br />

This could be explained by the possible presence of other genes in the genome that could<br />

negatively interact with the Bar<strong>on</strong>esse yield genes in an epistatic manner. Experiments to<br />

determine the amount, locati<strong>on</strong> in the genome, and acti<strong>on</strong> of these genes are underway.<br />

Morex x Steptoe<br />

Morex derived lines F13 and A23. These lines are Morex with chr3 (F13) and chr3 and<br />

chr5 (A23) fragments from Steptoe.<br />

Yield improvement in these lines is being tested by introgressi<strong>on</strong> of the Steptoe large<br />

seed QTL; crosses made summer 2000. Backcrosses and reselecti<strong>on</strong> were c<strong>on</strong>ducted in<br />

summer 2001.<br />

Yield improvement by increasing the head length is in progress. We crossed selected<br />

lines with selected lax head lines in summer 2000. Backcrosses and reselecti<strong>on</strong> were<br />

c<strong>on</strong>ducted summer 2001.

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