1a.Objectives (from AD-416):
Development of barley varieties and germplasm. We aim to improvement of barley cultivars with desired agronomic and quality traits that will benefit growers and industry. The long term goal is to develop and release new barley cultivars that have better yield potential plus either superior malting quality for malting barley or better nutrient quality for food barley.
1b.Approach (from AD-416):
The proposed work involves using both traditional breeding approach and molecular approaches. The traditional breeding approach will be used in crossing, evaluation, and selection. All the material advancement will be conducted in field, greenhouse, and winter nurseries. The molecular work will focus on the molecular marker identification for their linkage to important traits. Utilizing existing testing locations and off-season winter nurseries for the F2 and F4 generations, populations will be advanced to the F5 generation in bulk and F5:6 lines derived for yield evaluation. Lines will be derived from plants as opposed to spikes, and will therefore begin yield evaluation directly following derivation. Quality evaluation for malt quality will begin with the advanced yield trials, following at least two years of prior yield evaluation
Progress in the project relates directly to Objective 1, in the parent project to identify and develop barley with improved stress resistance and enhanced end-use quality. Progress made in the Aberdeen breeding program included:
1) One 6-row malting barley line and four 2-row winter malting barley lines were tested in the Western Malting Barley Trial in 2011-2012. The 2-row lines were compared to the checks of Charles and Endeavor, while the 6-row were compared to the Maja and Strider. The 2-row lines were all superior in yield compared to the checks Charles and Endeavor. The 6-row line was better than Maja and similar to the feed barley cultivar Strider. The expected benefit from this result is that we may have both 6-row and 2-row winter lines that out-yield the corresponding checks. Those lines will serve as basic resources for better yield potential in winter barley.
2) Promising spring malting lines underwent advanced testing to determine their commercial potential. The elite line 02AB17271 was increased to provide seed for American Malting Barley Association plant scale testing in 2012. The elite line 2Ab04-X010084-27 passed the second year of American Malting Barley Assocation pilot-scale evaluation and was recommended for plant scale testing the last step before recommending the variety for public release.
3) Three spring food barley lines were evaluated in 7 locations (3 irrigated and 4 dryland) in 2012: 2Ab09x06f058-21, 2Ab09x06f058-195, and 2Ab09x06f058-30. 2Ab09x06f058-21 showed better yield than Transit for the second year in multiple locations. Another line of 2Ab09-X06F058HL-31 outperformed all other lines. We will focus on these two lines next year. The expected benefit is that we will have a second spring food barley line better than Transit, the current industry standard.