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United States Department of Agriculture

Agricultural Research Service

Title: Morphological and Physiological Traits Related with Reduced Canopy Temperature Depression in Two Closely-Related Wheat Lines

Authors
item Balota, Maria - TEXAS A&M UNIVERSITY
item Payne, William - TEXAS A&M UNIVERSITY
item Evett, Steven

Submitted to: Agronomy Abstracts
Publication Type: Abstract Only
Publication Acceptance Date: July 22, 2003
Publication Date: November 3, 2003
Citation: BALOTA, M., PAYNE, W.A., EVETT, S.R. 2003. MORPHOLOGICAL AND PHYSIOLOGICAL TRAITS RELATED WITH REDUCED CANOPY TEMPERATURE DEPRESSION IN TWO CLOSELY-RELATED WHEAT LINES. ANNUAL MEETING ABSTRACTS 2003. ASA-CSSA-SSSA, DENVER, CO. 2003 CDROM.

Technical Abstract: Three winter wheat close-related lines (TX86A5606, TX88A6880, TX86A8072, and TX97A0149)were identified with contrasting responses to various environments in terms of canopy temperature depression (CTD), and grain yield. Under dryland condition, CTD was significantly correlated with grain yield, indicating that plants with cooler canopy produced higher yield. Measurements in 2000, 2001, and 2002 included CTD, wind speed, stomatal diffusive resistance at predawn and at day time, net photosynthesis, light interception, plant biomass, leaf area, leaf characteristic dimensions, leaf relative water content and chlorophyll content, and, at maturity, grain yield and final biomass. Data indicated that leaf characteristics might be responsible for higher CTD and grain production.

Last Modified: 12/20/2014
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