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.
| Identifer | oai:union.ndltd.org:unt.edu/info:ark/67531/metadc798441 |
| Date | 12 1900 |
| Creators | Chang, Fu-Hsian |
| Publisher | North Texas State University |
| Source Sets | University of North Texas |
| Language | English |
| Detected Language | English |
| Type | Thesis or Dissertation |
| Format | v, 39 leaves : ill., Text |
| Rights | Public, Chang, Fu-Hsian, Copyright, Copyright is held by the author, unless otherwise noted. All rights |
Page generated in 0.0019 seconds