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This article in AJ

  1. Vol. 63 No. 3, p. 425-428
     
    Received: Aug 21, 1970


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doi:10.2134/agronj1971.00021962006300030023x

Growth, Water Use, and Energy Balance Comparisons between Isogenic Lines of Barley1

  1. J. Kristian Aase2

Abstract

Abstract

Three barley (Hordeum vulgare L.) cultivars and their isogenic lines, with color (chlorophyll) as the variable, were tested under dryland conditions for various performance characteristics. Chlorophyll content and dry matter production were lower and growth stage development was later for the pale plants compared with then: dark counterparts. Total water use was about the same for all cultivars and isogenic lines; however, water-use efficiency was higher for the dark than for the pale plants.

Albedos were higher, canopy temperatures were lower, net radiation tended to be higher, and more of the energy was dissipated as sensible heat loss to the atmosphere for the pale compared with dark isogenic lines.

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