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Foliar Absorption and Translocation of Isoproturon, and its Action on Photosynthesis in Wheat (Triticum aestivum) and Slender Foxtail (Alopecurus myosuroides)

Published online by Cambridge University Press:  12 June 2017

Nagi R. Achhireddy ,
Ralph C. Kirkwood  and
William W. Fletcher
Nagi R. Achhireddy
Affiliation:
Dep. Biol., Univ. Strathclyde, Glasgow, Scotland
Ralph C. Kirkwood
Affiliation:
Dep. Biol., Univ. Strathclyde, Glasgow, Scotland
William W. Fletcher
Affiliation:
Dep. Biol., Univ. Strathclyde, Glasgow, Scotland
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Abstract

Investigations were made under controlled environmental conditions of isoproturon [N-(4-isopropylphenyl)-N’,N′-dimethylurea] absorption and translocation in wheat (Triticum aestivum L.) (tolerant) and slender foxtail (Alopecurus myosuroides Huds. ♯ ALOMY) (sensitive). Effects of isoproturon on 14CO2 fixation and 14C-assimilate translocation were also examined in the test species. The amount of 14C-isoproturon translocated by slender foxtail was about four times greater than by wheat. Foliar application of isoproturon resulted in greater inhibition of photosynthetic 14CO2 fixation in slender foxtail than in wheat. The reduction in 14C-assimilate translocation was also significantly greater in slender foxtail than in wheat.

Keywords

Assimilate translocationphotosynthesis inhibitionALOMY
Type
Physiology, Chemistry, and Biochemistry
Information
Weed Science , Volume 33 , Issue 6 , November 1985 , pp. 762 - 765
Copyright
Copyright © 1985 by the Weed Science Society of America 

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References

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