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Canopy temperatures of wheat: relationships with yield and potential as a technique for early generation selection

Author: Rees, D.
Author: Sayre, K.
Author: Acevedo, E.
Author: Nava Sanchez, T.
Author: Zhanyuan Lu
Author: Zeiger, E.
Author: Limon, A.
Year: 1993
ISBN: 968-6923-09-8
ISSN: 0187-7787
Abstract: It is shown that, for bread wheat, air-canopy temperature difference correlates significantly with grain yield, especially when measurements are taken later in the day, We discuss the potential of this technique as an early generation selection technique for high yielding varieties. In this context, we show that temperature measurements in spaced plants (mimicking the F2 generation planting arrangement) correlate as well with the yields of solid stands as do measurements on the solid stands themselves. We investigate the physiological basis for the relationships between air-canopy temperature difference and grain yield. There appear to be high positive correlations for stomatal conductance and photosynthetic rate with grain yield. We speculate about the physiological characteristics that may be responsible for these relationships. Durum wheats show a different behavior, in that there are no significant correlations for air-canopy temperature difference, stomatal conductance, and photosynthesis with grain yield.
Format: PDF
Language: English
Publisher: CIMMYT
Serie: CIMMYT Wheat Special Report (WPSR)
Copyright: CIMMYT manages Intellectual Assets as International Public Goods. The user is free to download, print, store and share this work. In case you want to translate or create any other derivative work and share or distribute such translation/derivative work, please contact indicating the work you want to use and the kind of use you intend; CIMMYT will contact you with the suitable license for that purpose.
Type: Report
Region: Global
Place of Publication: Mexico
Pages: 32 pages
Serie Number: 10
Agrovoc: WHEAT
Agrovoc: CANOPY
Agrovoc: YIELDS

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  • Wheat
    Wheat - breeding, phytopathology, physiology, quality, biotech

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