Submitted to: Meeting Abstract
Publication Type: Abstract Only
Publication Acceptance Date: 9/1/2001
Publication Date: 10/21/2001
Citation: MCMASTER, G.S., BYRNE, P., HALEY, S., NIELSON, D., STUSHNOFF, C., DOESKEN, N. WINTER WHEAT VARIETIES DIFFER IN PHENOLOGICAL AND CANOPY DEVELOPMENT RESPONSES TO WATER STRESS. 2001 Annual Meeting Abstracts (ASSA/CSSA/SSSA), Oct. 21-25, 2001. Charlotte, NC on CD. Interpretive Summary:
Technical Abstract: Understanding how winter wheat (Triticum aestivum L.) varieties respond to water stress is important in selecting varieties in semiarid production regions such as the Central Great Plains. The phenological and canopy development and temperature responses of 12 winter wheat varieties to water stress was studied for two years and locations in Colorado (Fort Collins and Akron). Cultivars differed in presumed drought and heat tolerance. Growth stages, leaf number, culm number, biomass, LAI, canopy temperature, plant height, flag leaf size, yield, and yield components were measured during the growing season for two water stress treatments: dryland and irrigated (at least every two weeks beginning early sprint). Preliminary results indicate, as expected, cultivars, treatments, and years varied for most responses. However, ranking of cultivars for a response did not always remain the same between treatments or year. Further analysis will explore varietal drought responses.