Full TGIF Record # 6556
Item 1 of 1
Author(s):Frank, A. B.
Author Affiliation:Northern Great Plains Res. Cent., USDA-SEA-AR, Mandan, ND 58554, USA
Title:Plant-water relationships of crested, pubescent, slender, and western wheatgrasses
Source:Proceedings of the XIV International Grassland Congress, held at. 1983, p. 399-401.
Publishing Information:Boulder, Colorado, USA; Westview Press
Keywords:TIC Keywords: Agropyron desertorum; Elymus trachycaulus; Thinopyrum intermedium; Elymus smithii; Drought; Elymus
Abstract/Contents:Trials were carried out to determine stress effects on transpiration, stomatal conductance, leaf water potential (LWP), leaf osmotic potential (LOP) and photosynthesis and to relate measured changes to drought tolerance in crested wheatgrass slender wheatgrass (Elymus trachycaulus), pubescent wheatgrass (E. hisdus subsp. barbulatus) and western wheatgrass (E. smithii). Both LWP and LOP decreased in all spp. as soil water potential decreased, but not in a 1:1 ratio indicative of max. osmotic adjustment. The LWP at zero turgor potential ranged from -28 and -27 bars for crested and slender, resp., to -24 bars for western and -23 bars for pubescent wheatgrasses. Results from field plants suggest a greater degree of osmotic adjustment in crested, slender and pubescent wheatgrasses than in western wheatgrass. For growth chamber plants, western was more sensitive to decreasing soil water potential, followed by pubescent and crested wheatgrasses.
Geographic Terms:North Dakota
ASA/CSSA/SSSA Citation (Crop Science-Like - may be incomplete):
Frank, A. B. 1983. Plant-water relationships of crested, pubescent, slender, and western wheatgrasses. Int. Grassland Congress Proc. p. 399-401.
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