Full TGIF Record # 18331
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Publication Type:
i
Report
Content Type:Abstract or Summary only
Author(s):Saneoka, Hirohumi; Premachandra, G. S.; Ogata, Shoitsu
Author Affiliation:Fac. Appl. Biol. Sci., Hiroshima University
Title:Effect of water stress on the movement and distribution of water in rhodesgrass and job's tears
Source:Supplement to Plant Physiology. Vol. 93, No. 1, May 1990, p. .
Publishing Information:Lancaster, PA: American Society of Plant Physiologists
Keywords:TIC Keywords: Chloris gayana; Coix lacryma-jobi; Drought; Drought resistance
Abstract/Contents:"Rhodesgrass (Chloris gayana Kunth.) and Job's tears (Coix larcryma jobi L.) are known to be drought tolerant and drought susceptible forage crops, respectively. They were grown in a nutrient solution with water stress treatment (osmotic potential of the solution adjusted to -0.97 MPa using manotol) and control (osmotic potential -0.05 MPa). Titrated water (3H20) was used as the tracer. In the water stress treatment, twenty four hours after the addition of 3H20, relative 3H radioactivity in roots, stems, expanded leaves and expanding leaves in Rhodesgrass reached to 5, 45, 9 and 8% of that of the nutrient solution respectively. The respective values in Job's tears were 48, 18, 5.5 and 4% indicating that the movement of water through Rhodesgrass was faster than in Job's tears. The movement of 3H2) was remarkably higher in both crops under water stress conditions. The results suggested that water movement through plants differ according to plant species. A series of resistance exists along the pathway of water movement from the soil to atmosphere through the plant. The major resistance to the movement appears to be exist in the nodes and/or basal stems which locate in transit positon from one organ to another. Resistance to water flow at the upper nodes as well as at the basal stems was higher in drought sensitive crop, Job's tears, than in Rhodesgrass."
Language:English
References:0
Note:This item is an abstract only!
Scientific program (abstracts of papers) for the Annual Meeting of the American Society of Plant Physologists, Indianapolis Convention Center and the Westin Hotel, Indianapolis, Indiana, July 29 - August 2, 1990.
ASA/CSSA/SSSA Citation (Crop Science-Like - may be incomplete):
Saneoka, H., G. S. Premachandra, and S. Ogata. 1990. Effect of water stress on the movement and distribution of water in rhodesgrass and job's tears. Plant Physiol. 93(1)
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