Master's Theses

Date of Award

Spring 1963

Degree Name

Master of Science (MS)

Department

Biology

Advisor

Floyd E. Kisinger

Abstract

The purpose of the study was to determine if foliar applied 2,4-D is translocated in young western ragweed plants. Rhizomes of western ragweed were obtained in the field and grown in a sunroom. The plants were kept well watered and provided additional light from incandescent lamps. Radioactive 2,4-D solution in alcohol was applied to the leaves . Radineutographs were made and radioactive measurements were taken of treated plants. The counting equipment was a 455 Lionel Scaler. The bulk of the radioactive 2,4-D was retained in the treated leaves. Radioactive 2,4-D was found predominately in the upper portions of each plant. No translocation of radioactive 2,4-D to rhizomes or roots was detected . Under the conditions of the experiment there was a movement of organic solutes from rhizomes to leaves and meristems. When 2, 4-D was applied to the western ragweed any amount that was translocated accompanied these solutes.

Rights

Copyright 1963 Thomas D. Johnsten

Comments

Notice: This material may be protected by copyright law (Title 17 U.S. Code).

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