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Mefluidide Effects on Growth of Corn (Zea mays) and the Synthesis of Protein by Cucumber (Cucumis sativus) Cotyledon Tissue

Published online by Cambridge University Press:  12 June 2017

B. Truelove ,
D.E. Davis  and
C.G.P. Pillai
B. Truelove
Affiliation:
Auburn Univ. Agric. Exp. Stn., Dep. Bot. Microbiol., Auburn, AL 36830
D.E. Davis
Affiliation:
Auburn Univ. Agric. Exp. Stn., Dep. Bot. Microbiol., Auburn, AL 36830
C.G.P. Pillai
Affiliation:
Auburn Univ. Agric. Exp. Stn., Dep. Bot. Microbiol., Auburn, AL 36830
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Abstract

Mefluidide {N-[2,4-dimethyl-5-[[(trifluoromethyl) sulfonyl]amino] phenyl] acetamide} at concentrations of 2.9 × 10-4 M and above retarded the growth of corn (Zea mays L. ‘Pioneer 3369A’) grown in nutrient culture. Dwarfing was accompanied by some plant distortion and chlorosis of the bases of those leaves formed soon after treatment. The chlorosis was associated with decreased chlorophyll a content. Chlorophyll b content was not affected. The growth-retardant effects of mefluidide could not be reversed by applications of gibberellic acid. Using cucumber (Cucumis sativus L. ‘Ashley’) cotyledon discs, a low level of mefluidide (2.9 × 10-5 M) increased the incorporation of 14C from leucine into protein, while a high concentration (2.9 × 10-4 M) reduced incorporation. Neither concentration affected the absorption of 14C-leucine.

Type
Research Article
Information
Weed Science , Volume 25 , Issue 4 , July 1977 , pp. 360 - 363
Copyright
Copyright © 1977 by the Weed Science Society of America 

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