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Ethanol Concentration in Tomato Plants during Soil Flooding 1
Author(s) -
Bolton E. F.,
Erickson A. E.
Publication year - 1970
Publication title -
agronomy journal
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.752
H-Index - 131
eISSN - 1435-0645
pISSN - 0002-1962
DOI - 10.2134/agronj1970.00021962006200020013x
Subject(s) - transpiration , flooding (psychology) , xylem , agronomy , exudate , chemistry , ethanol , soil water , environmental science , horticulture , botany , biology , soil science , photosynthesis , psychology , organic chemistry , psychotherapist , biochemistry
Tomato plants were studied to assess the potential value of ethanol accumulation in plant tissue as a measure of O 2 stress resulting from short periods of soil flooding. Ethanol concentration in xylem exudate was markedly associated with air temperature, and to a lesser extent with light intensity and soil temperature under conditions of flooding. Field flooding results agreed closely with simulated environments. A small amount of ethanol was eliminated by transpiration from flooded tomato plants under environmental conditions that favored accumulation. A slightly higher amount of ethanol was excreted from the roots. Ethanol in tomato plant samples appeared to indicate the intensity of O 2 deficiency during flooding by reflecting both soil O 2 supply and environmental effects, and could serve as a useful indicator in relating tomato plant injury to flooded conditions.