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Effects of Shoot X-Irradiation on Water Uptake by Single Isolated Roots of Intact Onion Plants

Using a micro-potometric method, it was ,found that X-irradiation (400 R - 18 Kr) of the shoots of the onion plant Allium cepa will produce an immediate, pronounced (200%) and reversible enhancement of the water uptake by the shielded roots. Unfiltered X-irradiation.(1200 R/min., 120 KVP, 5 ma) was delivered at right angles to the shoot. Readings were taken at 10-minute intervals before, and immediately following X-irradiation. The greatest enhancement occurred at dosages between 4.8 Kr (150%) and 6.0 Kr (190%). The data indicate that the irradiation effect on water uptake was a physical rather than a metabolic one.

Identiferoai:union.ndltd.org:unt.edu/info:ark/67531/metadc798441
Date12 1900
CreatorsChang, Fu-Hsian
PublisherNorth Texas State University
Source SetsUniversity of North Texas
LanguageEnglish
Detected LanguageEnglish
TypeThesis or Dissertation
Formatv, 39 leaves : ill., Text
RightsPublic, Chang, Fu-Hsian, Copyright, Copyright is held by the author, unless otherwise noted. All rights

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