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Translocation of 14C-SAN 6706 in Cotton, Soybean, and Corn

Published online by Cambridge University Press:  12 June 2017

R. H. Strang  and
R. L. Rogers
R. H. Strang
Affiliation:
Plant Path. Dep., Louisiana State Univ., Baton Rouge, LA 70803
R. L. Rogers
Affiliation:
Plant Path. Dep., Louisiana State Univ., Baton Rouge, LA 70803
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Abstract

The technique of microautoradiography was used to study the localization of 14C-SAN 6706 [4-chloro-5-(dimethylamino)-2-(α,α,α-trifluoro-m-tolyl)-3(2H-pyridazinone] in cotton (Gossypium hirsutum L. ‘Coker 203’), soybean [Glycine max (L.) Merr. ‘Lee’], and corn (Zea mays L. ‘W.F. 9’). SAN 6706 was removed from the treatment solutions by absorption and also by adsorption onto the surfaces of roots. Absorbed SAN 6706 appeared to move primarily in the apoplast and to be translocated acropetally and laterally in the transpiration stream. The herbicide accumulated in striking concentrations in the lysigenous glands and trichomes of the cotton plant. This accumulation is postulated to be a major factor in lowering the effective concentration of SAN 6706 in the leaves of cotton as compared to the leaves of the more susceptible soybean and corn plants, and thus may be a significant factor in the tolerance of cotton to SAN 6706.

Type
Research Article
Information
Weed Science , Volume 23 , Issue 1 , January 1975 , pp. 26 - 31
Copyright
Copyright © 1975 by the Weed Science Society of America 

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References

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