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Translocation of Dipropetryn and Prometryn in Seedlings and Excised Leaves of Oats (Avena sativa) and Corn (Zea mays)

Published online by Cambridge University Press:  12 June 2017

E. Basler ,
D. S. Murray  and
P. W. Santelmann
E. Basler
Affiliation:
Dep. of Agron., Oklahoma State Univ., Stillwater, OK 74074
D. S. Murray
Affiliation:
Dep. of Agron., Oklahoma State Univ., Stillwater, OK 74074
P. W. Santelmann
Affiliation:
Dep. of Agron., Oklahoma State Univ., Stillwater, OK 74074
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Abstract

The absorption of 14C-dipropetryn (2-ethylthio-4,6-bis-isopropylamine-s-triazine) and 14C-prometryn [2,4-bis(isopropylamino)-6-(methylthio)-s-triazine] by roots of intact seedlings of corn (Zea mays L. ‘Iowa Chief) and oats (Avena sativa L. ‘Cimarron’) was very extensive and occurred to about the same degree in both species after application to the root medium. The translocation of 14C-label of dipropetryn to the shoots was low in corn as compared to oats. Prometryn 14C-label was more readily translocated to the tops of corn than dipropetryn and was more readily translocated in oats than corn. Dipropetryn 14C-label entered excised leaves through the transpiration stream during a short exposure period and translocated to a greater extent in oats than in corn. The 14C-label of dipropetryn became immobilized in excised leaves after about 4 h. The 14C-label of prometryn was initially more mobile in excised leaves of oats than corn. However, translocation of the 14C-label of prometryn continued in both species during 10 h of treatment and there was very little difference in the final distribution pattern. DNP (2,4-dinitrophenol) did not affect the distribution pattern of the 14C-label of dipropetryn or prometryn in corn after 10 h treatments.

Keywords

s-triazine herbicidesabsorptionradioactiveimmobilize
Type
Research Article
Information
Weed Science , Volume 26 , Issue 4 , July 1978 , pp. 358 - 361
Copyright
Copyright © 1978 by the Weed Science Society of America 

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References

Literature Cited

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